Dr. David Michael Hone (born 1960) ( " [Dr. Michael Vincent Callahan (born 1962)] later confessed to [Dr. Robert Wallace Malone (born 1959)] that he lacked authority to be in Wuhan and had escaped by boat when the government imposed its quarantine. Callahan repeated parts of this story to Brendan Borrell, a writer for Science. Later, DTRA scientist [Dr. David Michael Hone (born 1960)], a GS15 officer, warned Malone to stop talking about Callahan, saying that “We had no military personnel in Wuhan at the time of the outbreak and Michael was lying about his presence.” Malone told me, “That would mean that Michael also lied to Brendan Borrell.” " ... "The Real Anthony Fauci" RFK Jr. book (2021) , Download the full PDF here : [HB0078][GDrive] )
Dr. Joshua Pottel (born 1989) ( ... )
Sina A Bavari (born 1959) ( and the pursuit for available/existing therapeutic for the SARS-COV2 virus; Dr. Sina Bavari immediately gravitated to Remdesivir )
Dr. Gary Leo Disbrow (born 1967) ( Rick Bright whistleblower complaint; HCQ approval cancellation ; criticism of famotidine.. and more .. )
[page 70 of 934 on kindle version]
“I told myself, ‘I am not going to tolerate that—in my practice, or on a national level or worldwide,’” Dr. McCullough told me. Realizing that COVID had to be fought on multiple fronts, McCullough began contacting physicians in other nations who were reporting success against the disease, including doctors in Italy, Greece, Canada, across Europe, and in Bangladesh and South Africa.
McCullough continues, “If this had been any other form of pneumonia, a respiratory illness, or any other infectious illness in the human body, we know that if we start early, we can actually treat much more easily than wait until patients are very sick.” McCullough says that the rule holds true for COVID-19: “We learned quickly that it takes about two weeks for someone infected with COVID to get sick enough at home to require hospitalization.”
Front-line clinical doctors quickly recognized that the disease was operating through multiple pathways, each requiring their own treatment protocol. “There were three major parts of the illness,” says McCullough: “1) the virus was replicating for as long as two weeks, 2) there was incredible inflammation in the body, and 3) that was followed by blood clotting.” He adds, “By April 2020, most doctors understood a single drug was not going to be enough to treat this illness. We had to use drugs in combination.”
“We quickly developed three principles,” says McCullough; his three-step protocol was as follows:
Use medications to slow down the virus;
Use medications to attenuate or reduce inflammation;
Address blood clotting.
McCullough and his global partners quickly identified a pharmacopoeia of off-the-shelf treatments demonstrating extraordinary efficacy against each stage of COVID when administered early in the course of the disease.
McCullough chronicles the rapid pace with which front-line doctors uncovered rich apothecaries of effective COVID remedies. HHS’s early studies supported hydroxychloroquine’s efficacy against coronavirus since 2005, and by March 2020, doctors from New York to Asia were using it against COVID with extraordinary effect. That month, McCullough and other physicians at his medical center organized, with the FDA, one of the first prophylactic protocols using hydroxychloroquine. “We had terrific data on ivermectin, from the medical teams in Bangladesh and elsewhere by early summer 2020. So now we had two cheap generics.” McCullough and his growing team of 50+ front-line doctors discovered that while HCQ and IVM work well against COVID, adding other medications boosts outcomes drastically. These included azithromycin or doxycycline, zinc, vitamin D, Celebrex, bromhexine, NAC, IV vitamin C, and quercetin. McCullough’s team realized that, like hydroxychloroquine and ivermectin, quercetin—that ubiquitous health store nutraceutical—is an ionophore—meaning that it facilitates zinc uptake in the cells, destroying the capacity of coronavirus to replicate. “The Canadians came on with Colchicine in a high-quality trial based on an initial Greek trial,” McCullough continued. “We learned more from experts at UCLA and elsewhere with respect to blood clotting and the need for aspirin and blood thinners. We got early approval for monoclonal antibodies. It was later learned that both fluvoxamine and famotidine could play roles in multidrug treatment.” LSU Medical School professor Paul Harch discovered peer-reviewed papers from China where researchers there had been using hyperbaric chambers (HBOT) with stunning success.48 Between April and May, a group of NYU researchers reproduced that success by getting patients off ventilators and quickly recovering 18 of 20 ventilator cases using HBOT.49 (Yale is currently conducting Phase 3 with stellar early results.)
There were many other promising treatments. Asian nations were using saline nasal lavages to great effect to reduce viral loads and transmission.50 McCullough discovered he could prophylax patients and drop viral load and prevent transmission with a variety of other oral/nasal rinses and dilute virucidal agents, including povidone iodine, hydrogen peroxide, hypochlorite, and Listerine or mouthwash with cetylpyridinium chloride.Mass General’s infectious disease maven Dr. Michael Callahan had seen hundreds of patients in Wuhan in January 2020, and assessed the impressive efficacy of Pepcid, an over-the-counter indigestion medicine. The Japanese were already using Prednisone, Budesonide, and Famotidine with extraordinary results.
By July 1 [2020], McCullough and his team had developed the first protocol based on signals of benefit and acceptable safety. They submitted the protocol to the American Journal of Medicine. That study, titled “The Pathophysiologic Basis and Clinical Rationale for Early Ambulatory Treatment of COVID-19,”51 quickly became the world’s most-downloaded paper to help doctors treat COVID-19.
“It is extraordinary that Dr. Fauci never published a single treatment protocol before that,” says McCullough, “and that ‘America’s Doctor’ has never, to date, published anything on how to treat a COVID patient. It shocks the conscience that there is still no official protocol. Anyone who tries to publish a new treatment protocol will find themselves airtight blocked by the journals that are all under Fauci’s control.”
The Chinese published their own early treatment protocol on March 3, 2020,52,53 using many of the same categories of prophylactic and early treatment drugs uncovered by McCullough—chloroquine (a cousin of hydroxychloroquine), antibiotics, anti-inflammatories, antihistamines, a variety of steroids, and probiotics to stabilize and fortify the immune system and apothecaries of traditional Chinese medicines, vitamins, and minerals, including a variety of compounds containing quercetin, zinc, and glutathione precursors.54 The Chinese made early treatment the central priority of their COVID strategy. They used intense—and intrusive—track-and-trace surveillance to identify and then immediately hospitalize and treat every COVID-infected Chinese. Early treatment helped the Chinese to end their pandemic by April 2020. “We could have done the same,” says McCullough.
Though now he is often censored, the AMA still lists Dr. McCullough’s study as the most frequently downloaded paper for 2020. The Association of American Physicians and Surgeons (AAPS) downloaded and turned McCullough’s AMA article into its official treatment guide.55 AAPS Director Dr. Jeremy Snavely told me in August 2021 that the Guide had 122,000 downloads: “We figure it has been seen by over a million people. It’s the only trusted guide. Our phone never stops ringing. Mostly the calls are from physicians and patients desperate for the help they cannot get from any HHS website.”
By autumn, front-line physicians had assembled a pharmacopeia of repurposed drugs, all of which were effective against COVID.
By that time, more than 200 studies supported treatment with hydroxychloroquine, and 60 studies supported ivermectin. “We combined these medicines with doxycycline, azithromycin to suppress infection,” says McCullough. Another meta-analysis supported the use of prednisone and hydrocortisone and other widely available steroids to combat inflammation.56 Three studies supported the use of inhaled budesonide against COVID; an Oxford University study published in February 2021 demonstrated that that treatment could reduce hospitalizations by 90 percent in low-risk patients,57 and a publication in April 2021 showed that recovery was faster for high-risk patients, too.58 Furthermore, a very large study supported colchicine as an anti-inflammatory.59 Finally, McCullough’s growing array of physicians had observational data from late-stage treatment of hospitalized patients with full-dose aspirin and antithrombotics, including Enoxaparin, Apixaban, Rivaroxaban, Dabigatran, Edoxaban, and full-dose anticoagulation with low molecular weight heparin for blood clots.60
“We were able to show that doctors can work with four to six drugs in combination, supplemented by vitamins and nutraceuticals including zinc, vitamins D and C, and Quercetin. And they can guide patients at home, even the highest-risk seniors, and avoid a dreaded outcome of hospitalization and death,” said McCullough.
[page 820 of 934 on kindle version]
The CIA had a long, sordid history of secretly promoting the US bioweapons program. One of the agency’s first projects was establishing a network of so-called “ratlines” that Army intelligence officers used to smuggle some 1,600 chemicals and bioweapons and WMD experts—many of them Nazi Party kingpins and notorious war criminals—out of the reach of the Allies’ Nuremberg prosecutors following World War II. The directors of a notorious operation, code-named Paperclip, provided these researchers with new identities and put them to work developing US germ warfare capacity at Ft. Detrick and elsewhere even after 1972. As late as 1997, the CIA defied the Bioweapons Treaty to launch a top-secret—and highly illegal—effort to create a doomsday “bacteria bomblet.”82
The CIA officially made its open debut in the biosecurity racket in 2004, with its launch of Argus, a project that monitors biological, terrorist, and pandemic threats in 178 nations.83 CIA operative and pediatrician Jim Wilson set up the program at Georgetown University with funding from DHS and the Intelligence Innovation Center to create and implement global foreign biological event detection and tracking capability, capable of assessing millions of pieces of information about social behavior daily and to train government officials in pandemic preparedness.84 One of the key figures in this global surveillance effort was CIA officer Dr. Michael Callahan.
Dr. Michael Callahan is one of the biggest names in bioweapons research. Dr. Callahan ran a biosecurity program for the former CIA surrogate USAID before serving as Director of DARPA’s bioweapons research program. At DARPA, he competed to outdo NIH in laundering money through Peter Daszak’s EcoHealth Alliance to perform bioweapons research, including at the Wuhan lab.85
And as DARPA director, Callahan launched the PREDICT project in 2009 following Jeremy Farrar’s fake bird flu pandemic. PREDICT appeared to be a reincarnation of the CIA’s Argus project under the cover of USAID. PREDICT is the largest single source of funding to Daszak, with a $3.4 million subgrant routed through the University of California (2015–2020). PREDICT became the largest funder of gain-of-function studies and served as the principal funding vehicle through which the gain-of-function cartel evaded Barack Obama’s 2014 presidential moratorium.86
When, during the height of the presidential gain-of-function moratorium, Ralph Baric and the UTMB lab’s Vineet Menachery brazenly published their alarming 2015 study—describing their reckless experiments to breed pandemic bat coronaviruses that could spread via respiratory droplets in humanized mice—they omitted mentioning, in their initial online version of the article, that one of the funding sources was USAID-EPT-PREDICT. Apparently hoping to cover its tracks, PREDICT had laundered its grant through Peter Daszak’s EcoHealth Alliance.
USAID’s PREDICT program boasts that it has identified almost a thousand new viruses, including a new strain of Ebola, and trained some 5,000 people. In October 2019, not long before COVID-19 emerged, USAID abruptly ceased funding PREDICT, a decision bemoaned by Daszak in the New York Times as “definitely a loss.”87
Callahan had a chummy relationship with Daszak, with whom he coauthored several articles—including throughout the gain-of-function moratorium. In April 2015, for example, the names of Michael V. Callahan and Peter Daszak appeared as coauthors on a paper published in the Virology Journal and titled “Diversity of Coronavirus in Bats from Eastern Thailand.”88
Callahan was well aware that he and his confederates were toying with fire. In 2005, Callahan testified before Congress as he was moving into his new office at DARPA. He concluded the hearing with a chilling warning about the nation’s new commitment to Janus-faced gain-of-function science that Drs. Fauci, Robert Kadlec, Callahan himself, and many others would proceed to blithely ignore:
the dark science of biological weapon design and manufacture parallels that of the health sciences and the cross mixed disciplines of modern technology. Potential advances in biological weapon lethality will in part be the byproduct of peaceful scientific progress. So, until the time when there are no more terrorists, the US Government and the American people will depend on the scientific leaders of their field to identify any potential dark side aspect to every achievement.89
Even after leaving DARPA and USAID, Callahan periodically boasted of his continuing influence over US pandemic response policies at the highest levels of government. He alluded to his confidence in these mysterious connections in 2012: “I still have federal responsibilities to The White House for pandemic preparedness and exotic disease outbreak which will continue for the near future.”90
On January 4, 2020, Callahan called Dr. Robert Malone from China just as the coronavirus began taking its first wave of casualties. Malone, a former contractor to the US Army Medical Research Institute of Infectious Diseases and the chief medical officer at Alchem Laboratories, is the inventor of the mRNA vaccine technology platform. Malone first met Callahan in 2009 through Malone’s sometime business partner, [Dr. Darrell Ray Galloway (born 1946)], a CIA officer who formerly served in the US Navy and at one point held the post of director of JSTO in the [Defense Threat Reduction Agency, aka "DTRA"]. To Malone, Galloway introduced Callahan as a fellow CIA officer. During his January 4 phone call, Callahan told Malone that he was just outside Wuhan. Malone assumed that Callahan was visiting China under cover of his Harvard and Massachusetts General Hospital appointments. Callahan told Malone that he had been treating “hundreds” of COVID-19 patients. Callahan subsequently described to National Geographic how he had pored through thousands of case studies at the outbreak’s epicenter. He giddily reported his amazement at the virus’s “magnificent infectivity,” and its capacity to explode “like a silent smart bomb in your community.”91 Callahan later confessed to Malone that he lacked authority to be in Wuhan and had escaped by boat when the government imposed its quarantine. Callahan repeated parts of this story to Brendan Borrell, a writer for Science. Later, [DTRA / "Defense Threat Reduction Agency"] scientist [Dr. David Michael Hone (born 1960)], a GS15 officer, warned Malone to stop talking about Callahan, saying that “We had no military personnel in Wuhan at the time of the outbreak and Michael was lying about his presence.” Malone told me, “That would mean that Michael also lied to Brendan Borrell.” On leaving China, Callahan returned to Washington to brief federal officials and then went directly to work as a “special adviser” to Robert Kadlec, managing the government’s response to the coronavirus.
By Sandra E. Garcia / Sept. 30, 2019 / Saved PDF : [HN027V][GDrive]
NOTE - ranitidine bismuth citrate later found to be powerful in COVID treatments ...See https://www.nature.com/articles/s41564-020-00802-x
The pharmacy chains Walgreens, Rite Aid and CVS have moved to stop selling the heartburn medicine Zantac and its generic versions after the Food and Drug Administration warned this month that it had detected low levels of a cancer-causing chemical in samples of the drug.
A Walgreens spokesman said in a statement on Monday that the company had pulled the drug from its shelves “while the FDA continues its review of the products.” A Rite Aid spokesman said the company was “in the process of removing Zantac and generic versions sold under the Rite Aid name from its shelves.”
Walgreens and CVS, which announced its move on Saturday, both noted that the drug, which is known as ranitidine, has not been recalled. The companies said customers who had bought the products could return them for a refund.
The F.D.A. has said it is investigating the source of the contamination as well as the risk to patients, recommending that they talk to their doctors and that those who take over-the-counter versions consider switching to a different medication.
Zantac, the brand-name version of the drug, is sold by Sanofi, but generic versions are widely sold.
This month, the drug maker Novartis said that its generic-drug division, Sandoz, had stopped distributing a prescription form of ranitidine worldwide while it investigates the F.D.A.’s findings. GlaxoSmithKline has also stopped shipping its generic version of the drug, as well as Dr. Reddy’s Laboratories, a major generic manufacturer.
The companies, including Sanofi, have stopped short of recalling their products in the United States. In a statement on Monday, Sanofi said that the levels of the contaminant that the F.D.A. had found in “preliminary tests barely exceed amounts found in common foods.”
The company added: “We are working closely with the F.D.A. and are conducting our own robust investigations to ensure we continue to meet the highest quality safety and quality standards.”
Last week, Apotex, which makes store-branded versions of Zantac for Walgreens, Walmart and Rite-Aid, recalled its ranitidine products.
The European Medicines Agency is also reviewing the drug. Canada has ordered a halt to all distribution of ranitidine while it investigates.
In its warning on Sept. 13, the F.D.A. said that it had found low levels of a cancer-causing contaminant, a type of nitrosamine called nitrosodimethylamine, or NDMA, in the heartburn medications.
Nitrosamines can cause tumors in the liver and other organs in lab animals, and they are believed to be carcinogenic in humans. NDMA can form during manufacturing if the chemical reactions used to make the drug are not carefully controlled, the F.D.A. has said.
Ranitidine is a histamine blocker that works to lower the acid created in the stomach, according to the F.D.A. The medication is sometimes prescribed to prevent ulcers of the stomach and intestines as well as gastroesophageal reflux disease, the agency says.
CVS said it would continue to sell other histamine blockers, including Pepcid, Tagamet and the generic equivalents famotidine and cimetidine.
Source : "The Real Anthony Fauci" RFK Jr. book (2021) - Download the full PDF here : [HB0078][GDrive]
"During his January 4 phone call, Callahan told Malone that he was just outside Wuhan. Malone assumed that Callahan was visiting China under cover of his Harvard and Massachusetts General Hospital appointments. Callahan told Malone that he had been treating “hundreds” of COVID-19 patients. Callahan subsequently described to National Geographic how he had pored through thousands of case studies at the outbreak’s epicenter. He giddily reported his amazement at the virus’s “magnificent infectivity,” and its capacity to explode “like a silent smart bomb in your community.”91"
Page A1 (Full) : [HN01X2][GDrive] / Page A4 (Full) : [HN01X4][GDrive]
Mentioned : Dr. Emmie de Wit (born 1980(est.))
See Biogen conference COVID-19 superspreader event (Feb 26-27, 2020) ...
"Both Dr. Callahan and Malone claimed to be unaware of each other’s conclusions regarding the anti-acid, and despite agreeing to collaborate, each claims to have made the initial discovery. Malone offered a February post on LinkedIn as proof, where he asserts that he was “the first to take the drug to treat my own case” upon discovering the proper dose. "
"On March 20, [Robert Peter Kadlec (born 1957)] wrote to Northwell’s executive vice president for research, telling him to work with [Dr. Michael Vincent Callahan (born 1962)] to prepare a contract proposal and a draft budget for the Pepcid trial." .... Source : [HN01WY][GDrive]
Saved PDF : Saved PDF : [HN028D][GDrive] / See Biogen conference COVID-19 superspreader event (Feb 27-28, 2020)
Saved PDF : [HM008Y][GDrive] / See Biogen conference COVID-19 superspreader event (Feb 27-28, 2020)
" “By directing a member of his staff (Callahan) to work as an agent of both the company and the government regarding the proposal, Dr. Kadlec was inviting violations of federal procurement law,” Bright said in his complaint. Kadlec did not respond to questions about Bright’s allegations, but an HHS spokesperson said senior federal executives often seek expertise both inside and outside of the government. “In that regard, Kadlec is no different,” the department’s spokesperson said in an email. But two other federal scientists on Bright’s team shared his worries that Callahan’s involvement appeared to be a conflict of interest. Several of them initially saw the Pepcid proposal as a joke; the request was based purely on anecdotal evidence for a trial that would cost millions and take months. Their concerns were ignored, according to Bright’s complaint and government records. Kadlec oversees Bright’s agency and wanted the Pepcid contract approved — fast."
"In late March, the FDA expressed concerns over the famotidine dosage patients were to receive intravenously but agreed to approve the trial after Northwell said it would reduce it, records show. But a senior agency official said the reduced dosage still pushed the levels “to the limits” when compared to previous clinical tests and toxicology studies in animals. Still, the fast-moving Pepcid proposal had snared the interest of top leadership at HHS, including Secretary Alex Azar, according to the internal emails. After Callahan and Northwell looped in Azar and other top administration officials, however, FDA approved the trial quickly, internal emails show."
March 27, 2020 | A version of this story appeared in Volume 98, Issue 13 /by Lisa M. Jarvis , with reporting by Bethany Halford / Source saved as PDF : [HP00AF][GDrive]
Mentioned : Sina A Bavari (born 1959) / Dr. Mark Randall Denison (born 1956) /
Gilead's antiviral remdesivir is being tested in multiple late-stage studies in China and the US to treat COVID-19.
In the coming weeks, the world will get a sense of whether Gilead Sciences’ remdesivir, an antiviral developed for Ebola, is useful against the novel coronavirus. With the coronavirus pandemic spiraling—during the week of March 23, worldwide infections crossed 500,000 and deaths shot towards 25,000—initial results emerging from several late-stage studies will be under the microscope.
But infectious disease experts on the front lines warn that the data are unlikely to clearly answer the question of whether remdesivir works in COVID-19, the respiratory illness caused by the SARS-CoV-2 virus. Those first tests are in the sickest, hardest-to-treat, patients. Moreover, antivirals don’t have a great track record at taking down coronaviruses, which can be a little more sophisticated than your average RNA virus.
Still, some industry watchers hope the studies signal enough success to convince the US Food and Drug Administration to approve Gilead’s experimental drug.
When a new infectious disease threatens the world, researchers’ first move is to look for any existing therapies that might work against it. As [Sina A Bavari (born 1959)] of Edge Bioinnovation Consulting and Management puts it, when you’re really hungry, you’d rather take a lasagna out of the freezer than make one from scratch. Bavari previously spent many years as chief scientific officer at the US Army Medical Research Institute of Infectious Diseases.
As the coronavirus began to spread, one of the first compounds to be pulled from the freezer was remdesivir. Discovered by Gilead and the Army institute during the 2014 Ebola outbreak in West Africa [see Western African Ebola virus epidemic (2013 - 2016)], the RNA polymerase inhibitor seemed like a sound choice. Although it turned out not to work in Ebola—a failure many blame on how late in the progression of the disease it was given—studies in both healthy and infected people showed the drug is fairly safe.
And researchers point to solid science for why remdesivir might still work against COVID-19.
The SARS-CoV-2 genome is made up of a string of nucleotides that, during replication, are reconstructed, one by one, by the viral polymerase. The RNA-dependent RNA polymerase is a good drug target because it is “almost exclusively associated with the virus,” says University of Wisconsin–Madison virologist Andy Mehle. Polymerase inhibitors will be highly specific for infected cells, sparing healthy ones.
Enter remdesivir, which acts like a mimic for adenosine—one of the nucleotides in that string.
The virus is tricked into incorporating the active form of the drug into its genome, preventing it from making more copies of itself. The mechanism by which remdesivir does that is still unclear, but “polymerase inhibitors primarily work by causing mutations of the genome, or by blocking polymerase function,” Mehle says.
Although Gilead developed remdesivir for Ebola, which belongs to a different family of viruses than SARS-CoV-2, the “viral machinery has elements in common,” Erica Ollmann Saphire, a virus expert at the La Jolla Institute for Immunology, said in an email. Those common elements include polymerases, meaning that for any “safe, bioavailable and manufacturable molecule, the only remaining question is will it work against this other virus,” she said.
While remdesivir was being tested in people with Ebola, several academic and government groups were exploring its potential to take down other viruses, including the coronaviruses that cause SARS (severe acute respiratory syndrome) and MERS (Middle East respiratory syndrome). They showed in both lab experiments and animal studies that remdesivir could treat infections and prevent them altogether—what scientists call prophylaxis.
In fact, remdesivir is one of only two highly effective compounds to come out of six years of screening against coronaviruses, says [Dr. Mark Randall Denison (born 1956)], a coronavirus expert and director of the Division of Infectious Diseases at Vanderbilt University Medical Center. Denison has collaborated with labs at the University of North Carolina and elsewhere to find small molecules that keep coronaviruses from replicating—and still work if the virus mutates. The other effective compound, EIDD-2801, was discovered by Emory University chemists and recently licensed to Ridgeback Biotherapeutics.
One reason so many compounds failed is that coronaviruses are a little smarter than other RNA viruses. They’re the only ones with a polymerase that can fix errors in their genomes, meaning they can spot and ignore the mimics that drug hunters typically design. [Dr. Mark Randall Denison (born 1956)]'s lab found that remdesivir, like EIDD-2801, can bypass that proofreading function.
Those studies, combined with the Ebola safety data, provided a rationale for trying the compound against the new coronavirus.
At the moment, five Phase III studies are testing the drug against COVID-19. Two began in China in early February—one in people with severe disease, the other in those with mild to moderate disease. One is a US National Institutes of Health–led study that started in February to test the drug in anyone hospitalized with evidence of lung involvement. And two are Gilead-led studies that started in March—one in severe disease and the other in moderate disease.
The first data should come from the studies in China, followed quickly by an initial report from Gilead. With so much pressure to find a COVID-19 treatment—even a modestly effective one—the results will be closely scrutinized. But many on the front lines caution that, even though the studies were carefully designed, the answers might not be clear cut.
“I don’t think the ongoing trials will tell us a lot,” says H. Clifford Lane, clinical director at the National Institutes of Allergy and Infectious Diseases, who is overseeing ongoing studies at the NIH, including its remdesivir study. “The studies might give us some hint, but I do think it will be important to get a study launched that focuses on early disease”—before it becomes severe.
A likely scenario is that several studies “don’t reach statistical significance but show a similar result, and that might be enough to say we should probably be using this,” Lane says. “It’s really hard to know what to do.”
Libby Hohmann, associate professor of medicine and infectious diseases at Massachusetts General Hospital, is similarly cautious. “It’s going to be a challenge to review the data because the protocol allows a wide range of illness into it,” says Hohmann, who leads the hospital’s participation in NIAID’s remdesivir trial. “Unless it’s sort of a home run, it may be difficult to parse at the get go.”
One issue is that the first studies to read out are the ones focused on the most severe cases, people whose disease might have progressed past the point of help by an antiviral.
“Everything we do in infectious disease is better treated when it’s early on and the bacterial or viral burden and the damage done is lesser,” Hohmann says. Doctors are realizing that COVID-19 is a two-phase illness, she says, that starts with upper respiratory symptoms that worsen after a week to two weeks. At some point during that period, patients “fall of a cliff,” Hohmann notes. “There’s a lot of data and speculation that it’s a kind of immunological phenomenon,” where certain people’s immune or inflammatory response goes awry.
So if those first data in severe or even moderate cases are unclear, it doesn’t necessarily mean the drug doesn’t work. Rather, it could just mean it isn’t being given early enough.
But even if patients are treated early, the benefits could be minimal, Lane warns. Consider, for example, the limitations of Tamiflu (oseltamivir), a common treatment for another virus, influenza. To have any effect, the drug must be taken within 48 hours of symptoms appearing. And even then, “the overall impact on clinical outcomes is not very dramatic,” Lane says. “We don’t have a lot of success in treating RNA viruses.”
In the ideal scenario where the trials do look good, caveats still abound. Ideally, doctors would deploy the drug either prophylactically or just after exposure, but before symptoms appear. Edge Bioinnovation’s Bavari calls it “something to give before you actually go to the hospital so you don’t end up in the hospital.”
But remdesivir can only be given intravenously, so “it’s not like we’re going to be able to give it to people with the sniffles out in the real world,” Hohmann says.
Nonetheless, her team has been trying to enroll people with a better chance of responding to the drug. Among the 16 patients her clinic has signed up so far, she’s emphasized younger people and those with mild to moderate disease—the ones with shortness of breath rather than those being intubated in the emergency room. “I think we will be able to tell if we’re making a difference in those people,” Hohmann adds.
Gilead says it has no plans to turn remdesivir into a pill. “Based on our understanding of remdesivir from preclinical studies, intravenous administration allows for the most stability and appropriate levels of the drug in the blood system,” a company spokesperson tells C&EN.
Another roadblock is manufacturing. Gilead’s spokesperson notes that “there are currently limited available clinical supplies of remdesivir, but we are working to increase our available supply as rapidly as possible.” For example, the firm is beginning in-house manufacturing of the drug, which had been made only by contract manufacturers. The biotech firm has also added new manufacturing partners around the world to enhance sourcing of everything from raw materials to the finished drug.
Despite the many caveats attached to remdesivir, stock analysts who cover Gilead say it has a reasonable chance of reaching the market. “No one expects it to be a magic bullet,” says Piper Sandler analyst Tyler Van Buren. “But if it works at all in a portion of patients, especially in severe ones, that is very meaningful.” If remdesivir can reduce the need for ventilators or time on supplemental oxygen, Van Buren argues, it could alleviate burden on the healthcare system.
While the FDA approval process typically takes 6–12 months, “this is an unprecedented, once-in-a-century situation,” Van Buren says. Gilead has been submitting as much data as possible to regulatory agencies to expedite approval, he notes. “If the data does look good, there will be tremendous pressure for FDA to make a decision within days.”
If that happens, could the world end some of the more extreme social distancing measures and start getting back to business? “I think it will depend on the level of efficacy,” NIAID’s Lane says. “The goal remains to prevent the spread of infection. While an effective therapy might have some effect, I doubt it would have a major impact.”
Even in the best-case scenario, where remdesivir moves the needle for patients in a meaningful way, successful deployment will require a health care workforce capable of administering it. Because of shortages of personal protective equipment (PPE) and other supplies, Mass General’s Hohmann says, conditions are already difficult—and the worst is yet to come.
“It’s just a challenge because the clinical workforce is overworked, nervous, worried about their own health, worried about the lack of PPE, and about the tsunami of patients that’s coming,” she says. “If we had all the PPE we need, such that nobody had to worry about going into the room of a patient with known disease, life would be a lot easier around here.”
"On 7 April, the first COVID-19 patients at Northwell Health in the New York City area began to receive famotidine intravenously, at nine times the heartburn dose. Unlike other drugs the 23-hospital system is testing, including Regeneron’s sarilumab and Gilead Sciences’s remdesivir, Northwell kept the famotidine study under wraps to secure a research stockpile before other hospitals, or even the federal government, started to buy it. “If we talked about this to the wrong people or too soon, the drug supply would be gone,” says Kevin Tracey, a former neurosurgeon in charge of the hospital system’s research."
Now, [as of April 26 2020,] the Pepcid project faces an uncertain future. Northwell Health, the New York health care provider hired to conduct the testing at its hospitals, put the trial on hold due to a shortage of hospitalized COVID-19 patients in that state. Northwell is partnered with Alchem Laboratories, the Florida-based pharmaceutical company that received the contract.
Dr. Robert Malone, a molecular virologist who was Alchem’s chief medical officer when it won the Pepcid contract, says he was the first to come up with the idea that Pepcid might be effective against COVID-19.
Malone resigned as Alchem’s chief medical officer the week the company got the testing contract. He complained of a difficult work environment, and has since been critical of Callahan and the project.
PDF : [HG00FD][GDrive] / Newspaper article : https://www.newspapers.com/image/658726901/?terms=famotidine%20covid&match=1
II. Since 2017, Dr. Bright Has Objected to HHS Leadership’s Cronyism and Award of Contracts to Companies with Political Connections to the Administration.
III. With the Emergence of COVID-19, Dr. Bright pushed BARDA to innovate quickly, but within the bounds of the scientific review process.
IV. HHS’s involuntary transfer of Dr. Right violated the Whistleblower Protection Act.
The fast-growing list of possible treatments for the novel coronavirus includes an unlikely candidate: famotidine, the active compound in the over-the-counter heartburn drug Pepcid. On 7 April, the first COVID-19 patients at Northwell Health in the New York City area began to receive famotidine intravenously, at nine times the heartburn dose. Unlike other drugs the 23-hospital system is testing, including Regeneron’s sarilumab and Gilead Sciences’s remdesivir, Northwell kept the famotidine study under wraps to secure a research stockpile before other hospitals, or even the federal government, started to buy it. “If we talked about this to the wrong people or too soon, the drug supply would be gone,” says Kevin Tracey, a former neurosurgeon in charge of the hospital system’s research.
As of Saturday, 187 COVID-19 patients in critical status, including many on ventilators, have been enrolled in the trial, which aims for a total of 1174 people. Reports from China and molecular modeling results suggest the drug, which seems to bind to a key enzyme in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), could make a difference. But the hype surrounding hydroxychloroquine and chloroquine—the unproven antimalarial drugs touted by President Donald Trump and some physicians and scientists—has made Tracey wary of sparking premature enthusiasm. He is tight-lipped about famotidine’s prospects, at least until interim results from the first 391 patients are in. “If it does work, we’ll know in a few weeks,” he says.
A globe-trotting infectious disease doctor named [Dr. Michael Vincent Callahan (born 1962)] was the first to call attention to the drug in the United States. Callahan, who is based at Massachusetts General Hospital and has extensive connections in the biodefense world, has spent time in disease hot zones around the world, including the 2003 outbreak of another coronavirus disease, SARS, in Hong Kong. In mid-January, he was in Nanjing, China, working on an avian flu project. As the COVID-19 epidemic began to explode in Wuhan, he followed his Chinese colleagues to the increasingly desperate city.
The virus was killing as many as one out of five patients older than 80. Patients of all ages with hypertension and chronic obstructive pulmonary disease were faring poorly. Callahan and his Chinese colleagues got curious about why many of the survivors tended to be poor. “Why are these elderly peasants not dying?” he asks.
In reviewing 6212 COVID-19 patient records, the doctors noticed that many survivors had been suffering from chronic heartburn and were on famotidine rather than more-expensive omeprazole (Prilosec), the medicine of choice both in the United States and among wealthier Chinese. Hospitalized COVID-19 patients on famotidine appeared to be dying at a rate of about 14% compared with 27% for those not on the drug, although the analysis was crude and the result was not statistically significant.
But that was enough for Callahan to pursue the issue back home. After returning from Wuhan [(when did he return?)], he briefed [Robert Peter Kadlec (born 1957)], assistant secretary for preparedness and response at the Department of Health and Human Services, then checked in with [Dr. Robert Wallace Malone (born 1959)], chief medical officer of Florida-based Alchem Laboratories, a contract manufacturing organization. Malone is part of a classified project called [DOMANE ( "Discovery of Medical Countermeasures Against Novel Entities" , created by the Defense Threat Reduction Agency in Dec of 2019 )] that uses computer simulations, artificial intelligence, and other methods to rapidly identify U.S. Food and Drug Administration (FDA)-approved drugs and other safe compounds that can be repurposed against threats such as new viruses.
[Dr. Robert Wallace Malone (born 1959)] had his eyes on a viral enzyme called the papainlike protease, which helps the pathogen replicate. To see whether famotidine binds to the protein, he would ordinarily need the enzyme’s 3D structure, but that would not be available for months. So Malone recruited computational chemist [Dr. Joshua Pottel (born 1989)], president of Montreal-based Molecular Forecaster, to predict it from two crystal structures of the protease from the 2003 SARS coronavirus, combined with the new coronavirus’ RNA sequence.
It was hardly plug-and-play. Among other things, they compared the gene sequences of the new and old proteases to rule out crucial differences in structure. [Dr. Joshua Pottel (born 1989)] then tested how 2600 different compounds interact with the new protease. The modeling yielded several dozen promising hits that pharmaceutical chemists and other experts narrowed to three. Famotidine was one. (The compound has not popped up in in vitro screens of existing drug libraries for antiviral activity, however.)
“If it does work, we’ll know in a few weeks,” says Northwell Health’s Kevin Tracey, who leads the famotidine study,
With both the tantalizing Chinese data and the modeling pointing toward famotidine, a low-cost, generally safe drug, Callahan contacted Tracey about running a double-blind randomized study. COVID-19 patients with decreased kidney function would be excluded because high doses of famotidine can cause heart problems in them.
After getting FDA approval, Northwell used its own funds to launch the effort. Just getting half of the needed famotidine in sterile vials took weeks, because the injectable version is not widely used. On 14 April, the U.S. Biomedical Advanced Research and Development Authority (BARDA), which operates under Kadlec, gave Alchem a $20.7 million contract for the trial, most of which paid Northwell’s costs.
The study’s draft protocol was aimed only at evaluating famotidine’s efficacy, but Trump’s “game-changer” antimalarial drug was rapidly becoming the standard of care for hospitalized COVID-19 patients. That meant investigators would only be able to recruit enough subjects for a trial that tested a combination of famotidine and hydroxychloroquine. Those patients would be compared with a hydroxychloroquine-only arm and a historic control arm made up of hundreds of patients treated earlier in the outbreak. “Is it good science? No,” Tracey says. “It’s the real world.”
Anecdotal evidence has encouraged the Northwell researchers. After speaking to Tracey, David Tuveson, director of the Cold Spring Harbor Laboratory Cancer Center, recommended famotidine to his 44-year-old sister, an engineer with New York City hospitals. She had tested positive for COVID-19 and developed a fever. Her lips became dark blue from hypoxia. She took her first megadose of oral famotidine on 28 March. The next morning, her fever broke and her oxygen saturation returned to a normal range. Five sick co-workers, including three with confirmed COVID-19, also showed dramatic improvements after taking over-the-counter versions of the drug, according a spreadsheet of case histories Tuveson shared with Science. Many COVID-19 patients recover with simple symptom-relieving medications, but Tuveson credits the heartburn drug. “I would say that was a penicillin effect,” he says.
After an email chain about Tuveson’s experience spread widely among doctors, Timothy Wang, head of gastroenterology at Columbia University Medical Center, saw more hints of famotidine’s promise in his own retrospective review of records from 1620 hospitalized COVID-19 patients. Last week, he shared the results with Tracey and Callahan, and he added them as a co-authors on a paper now under review at the Annals of Internal Medicine. All three researchers emphasize, though, that the real test is the trial now underway. “We still don’t know if it will work or not,” Tracey says.
Callahan has kept busy since his return from China. Kadlec deployed him on medical evacuation missions of Americans on two heavily infected cruise ships. Now back to doing patient rounds in Boston, he says the famotidine lead underscores the importance of science diplomacy in the face of an infectious disease that knows no borders. When it comes to experience with COVID-19, he says, “No amount of smart people at the [National Institutes of Health] or Harvard or Stanford can outclass an average doctor in Wuhan.”
By Gina Kolata, Peter Baker and Noah Weiland / Published April 29, 2020Updated Oct. 29, 2020 / Source : [HN01X9][GDrive]
Modest results from a federal trial of an experimental drug helped send the stock market soaring on Wednesday, another sign of the desperation for a viable treatment against the coronavirus.
Just before markets opened, Gilead, maker of the antiviral drug remdesivir, announced that it was “aware of positive data” about the drug’s performance in a federal trial, sending futures upward. Trading in the company’s shares was briefly halted.
Later, in a briefing at the White House, Dr. Anthony S. Fauci, director of the National Institute of Allergy and Infectious Diseases, said the trial had shown that treatment with the drug could modestly speed recovery in patients infected with the coronavirus.
The improvement in recovery times “doesn’t seem like a knockout 100 percent,” Dr. Fauci conceded, but “it is a very important proof of concept, because what it has proven is that a drug can block this virus.”
Sitting at Dr. Fauci’s side, President Trump said, “Certainly it’s positive, it’s a very positive event.” In past weeks, he has repeatedly hailed remdesivir as a potential “game changer,” despite spotty evidence.
Business leaders, scientists and politicians alike are scrambling to find ways to fight an insidious epidemic and to reopen a devastated economy. The virus has claimed at least 60,000 lives in the United States, and more than 200,000 worldwide. There have been precious few reasons for optimism, and the markets seized on the news.
The trial sponsored by the National Institute of Allergy and Infectious Diseases enrolled 1,063 patients who were given remdesivir or a placebo. The time to recovery averaged 11 days among those who got the drug, compared with 15 days for those who got the placebo.
There were fewer deaths in the remdesivir group, but the result did not reach statistical significance, Dr. Fauci said. Deaths were not a primary measure in the trial.
Dr. Fauci cautioned that the results of the study still needed to be properly peer-reviewed, but he was optimistic that remdesivir would become “the standard of care” for patients with Covid-19.
Some scientists were unsettled by the way in which the findings were reported. The disclosure of trial results in a political setting, before peer review or publication, is very unusual, said Dr. Steven Nissen, a cardiologist at the Cleveland Clinic who has conducted dozens of clinical trials.
“Where are the data?” he asked. Scientists will need to see figures on harms associated with the drug in order to assess its benefits, he added.
“This is too important to be handled in such a sloppy fashion,” Dr. Nissen said.
Dr. Michele Barry, a global health expert at Stanford University, said she had faith in Dr. Fauci’s assessment. Still, she added, “It is unusual to call a drug the ‘standard of care’ until peer review of data and publication, and before studies have shown benefit in mortality.”
The Food and Drug Administration is likely at some point to announce an emergency approval for remdesivir, a senior administration official told The New York Times. Another drug touted by the president, hydrochloroquine, also was granted such an approval, but results in patients have been disappointing.
In one study of veterans with Covid-19, those receiving hydrochloroquine and an antibiotic died at higher rates than those given ordinary supportive care.
Mr. Trump also hopes to put in place a crash program to develop a vaccine, an undertaking being seen with skepticism even inside the administration. The accelerated process, known internally as Operation Warp Speed, would aim to produce hundreds of millions of doses by the end of this year.
But medical experts, including Dr. Fauci, have warned that developing a vaccine will require a year to 18 months at the earliest, and that rushing the process could endanger public health.
For now, drug treatment seems a more attainable goal.
“Remdesivir is not a magic bullet, but it’s as good as we get right now,” said Dr. Peter Chin-Hong, an infectious disease specialist at the University of California, San Francisco, and one of the trial’s investigators. “Patients come to the hospital thinking we have a treatment, and by treatment, they mean a drug. [...] We have been impotent in not having any options.”
Remdesivir has never been approved as a treatment for any disease. It was developed to fight Ebola, but results from a clinical trial in Africa were disappointing.
But as the coronavirus pandemic took hold, the drug emerged as one of the more promising potential treatments. It interrupts the production of the virus in lab studies and seems safe in animals.
Until now, high expectations for remdesivir have been fueled largely by anecdotal reports of Covid-19 patients who took the drug and recovered.
Two such reports were published in the prestigious New England Journal of Medicine, lending credibility to what researchers said were actually uncertain results.
Without trials comparing the drug to a placebo, it has been impossible to know whether the drug made a difference or patients got better on their own with normal supportive care.
A separate study of remdesivir, published on Wednesday in The Lancet, found no benefit to the drug, compared with placebo.
“Unfortunately, our trial found that while safe and adequately tolerated, remdesivir did not provide significant benefits over placebo,” said the lead investigator of the new study, Dr. Bin Cao of the China-Japan Friendship Hospital and Capital Medical University in Beijing. [He added, ] “This is not the outcome we hoped for.”
The results are hard to interpret, because the study was far smaller than planned — enrolling 236 patients instead of the 453 that had been expected, because there were too few severely ill patients now in China.
Dr. Eric Peterson, a clinical trials expert at Duke University, said that with too few patients, “all you can say is it doesn’t seem to work in this population.” If there had been a big effect of the drug, he added, that would have been seen.
He added that the trial should not be repeated with this population, but instead in those who are less severely ill.
“This is a flawed study,” Dr. Barry said, but results might improve if the drug were given at a higher dose or earlier in the course of the disease.
Acceding to demands, Gilead has distributed the drug to hundreds of patients under so-called compassionate use, a regulatory exemption by which patients may receive a drug apart from a clinical trial.
Gilead itself published reports of uncontrolled studies. On Wednesday, in another news release, the company announced that a study comparing a five- to 10-day course of treatment with the drug showed that those getting the shorter course of treatment did just as well.
That study had no control group and was “noninformative,” Dr. Peterson said.
CHICAGO (Reuters) - Concerns over leaks compelled the top U.S. infectious disease official to reveal data on Gilead Sciences Inc’s experimental drug remdesivir, the first in a scientifically rigorous clinical trial to show benefit in treating COVID-19.
The dramatic announcement by Dr Anthony Fauci in the Oval Office on Wednesday prompted concerns among scientists that the Trump administration was raising hopes about a coronavirus treatment before sharing the full data with researchers.
As a cautionary example of inflating the potential value of a therapy, some pointed to President Donald Trump’s repeated endorsements of malaria drug hydroxychloroquine as a treatment, with no evidence that it works.
Newer data suggests the malaria treatments may carry significant risks for some sufferers of the respiratory disease caused by the virus.
Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), which is running the trial, said he took the first opportunity to get the word out that patients taking a dummy treatment or placebo should be switched to remdesivir in hopes of benefiting from it.
He expressed concern that leaks of partial information would lead to confusion. Since the White House was not planning a daily virus briefing, Fauci said he was invited to release the news at a news conference with Louisiana Gov. John Bel Edwards(D). “It was purely driven by ethical concerns,” Fauci told Reuters in a telephone interview.
“I would love to wait to present it at a scientific meeting, but it’s just not in the cards when you have a situation where the ethical concern about getting the drug to people on placebo dominates the conversation.”
An independent data safety and monitoring board, which had looked at the preliminary results of the NIAID trial, determined it had met its primary goal of reducing hospital stays.
On Tuesday evening, that information was conveyed in a conference call to scientists studying the drug globally.
“There are literally dozens and dozens of investigators around the world,” Fauci said. “People were starting to leak it.” But he did not give details of where the unreported data was being shared.
Several scientists interviewed by Reuters felt the White House setting seemed inappropriate for the release of highly anticipated government-funded trial data on the Gilead therapy.
They had expected it to be presented simultaneously in a detailed news release, a briefing at a medical meeting or in a scientific journal, allowing researchers to review the data.
Information from various trials of remdesivir has been leaked to media in recent weeks. In a statement on Wednesday, Gilead said the NIAID’s much anticipated trial had met its primary goal, but gave no details.
Data in a separate NIAID statement after Fauci spoke detailed preliminary results showing that patients who got the drug had a 31 percent faster time to recovery than those who got a placebo, cutting hospital stays by four days.
The trial also came close to showing the drug helped people survive the disease, but the data fell just short of statistical significance.
“I want to see the full data. I want to understand the statistics. I want to understand the benefit and risk. I want to understand the structure of the study, and all of it,” said Dr. Steven Nissen, the chief academic officer at the Cleveland Clinic.
“Am I encouraged from what I’ve heard? Yes, I’m encouraged. But I want to get a full understanding of what happened here, and not get it via a photo opportunity from the Oval Office.”
Data Gilead released on its own trial of remdesivir drew less attention, as it did not compare outcomes between those receiving therapy and those who did not.
Results from a third study in China suggesting remdesivir failed to help COVID-19 patients were released in the British medical journal the Lancet after review by a peer group of scientists.
“That’s the only thing I’ll hang my hat on, and that was negative,” said Dr. Eric Topol, director and founder of the Scripps Research Translational Institute in La Jolla, California.
He was unimpressed by remdesivir’s modest benefit.
“It was expected to be a whopping effect,” Topol added. “It clearly does not have that.”
At the Oval Office news conference, Fauci compared the study findings to AZT, the first drug to show any benefit against HIV, decades ago.
“We know that was an imperfect drug. It was the first step,” Fauci said in the interview. “Similar to AZT, it’s (remdesivir) the first baby step towards what hopefully will be a number of better drugs that will come in and be able to treat people with COVID-19.”
By Christopher Rowland / May 1, 2020 / Source : [HN01XA][GDrive]
Government clinical trial investigators changed the primary metric for measuring the success of Gilead’s experimental drug remdesivir as a coronavirus treatment two weeks before Anthony S. Fauci’s announcement that the drug would be the new “standard of care.”
Instead of counting how many people taking the drug were kept alive on ventilators or died, among other measures, the National Institute of Allergy and Infectious Diseases said it would judge the drug primarily on a different outcome: how long it took surviving patients to recover.
Death and other negative outcomes were moved to secondary measure status: They would still be tracked, but they would no longer be the key measure of remdesivir’s performance. The switch — which specialists said is unusual in major clinical trials but not unheard of — was publicly disclosed on the government’s clinicaltrials.gov website on April 16 but did not receive much attention at the time.
The change reflects evolving scientific understanding of the fast-moving nature of the virus and uncertainties around how the lethal effects reveal themselves in patients, said NIAID, Gilead, and outside specialists. But the change also adds weight to the assessment of government and medical researchers that remdesivir is not a knockout drug that will change the trajectory of the coronavirus pandemic.
On Friday, as expected, the Food and Drug Administration approved an emergency use authorization for the drug that will allow it to be prescribed for hospitalized patients infected with the coronavirus.
The newly adopted criteria were a central feature of this week’s declaration by Fauci, NIAID’s director, that remdesivir reduced the time to recovery for surviving patients from 15 days to 11 days, a 31 percent improvement.
“The data shows that remdesivir has a clear-cut, significant, positive effect in diminishing the time to recovery,'' Fauci said as he sat in an Oval Office meeting with President Trump and other members of the president’s coronavirus task force. “It’s highly significant.''
The difference in death rate, one of the original primary measures, was not statistically significant, Fauci said, showing only a marginal reduction from 11 percent in patients given a placebo to 8 percent in patients given remdesivir. Full release of the trial results would be made soon, Fauci said.
Some medical research specialists questioned the change in the primary outcome measure of the trial, which had 1,063 patients.
“I think that they thought they weren’t going to win, and they wanted to change it to something they could win on,'' said Steven Nissen, a Cleveland Clinic cardiologist and expert clinical investigator who has led numerous drug trials. “I prefer the original outcome. It’s harder. It’s a more meaningful endpoint.
“Getting out of the hospital early is useful,'' he said, “but it’s not a game-changer.''
Nissen expressed dismay that the placebo phase of the trial was declared over so quickly, when a few more weeks might have provided a pool of patients large enough to show a statistically beneficial difference in death.
But Fauci said Wednesday that ethical considerations drove the announcement: As soon as a clear evidence of shorter hospitalizations was available, trial investigators owed it to patients on placebo to stop that phase of the trial so they could access the drug.
When the trial began on Feb. 21, it was designed to focus on collecting eight patient outcomes, to be measured on the 15th day after treatment. The list of outcomes was similar to guidance the World Health Organization issued in February for coronavirus clinical trials.
The original NIAID trial list started with death, followed by five categories of hospitalized patients: on ventilator or ECMO machine (which oxygenates blood outside the body); on high-flow oxygen therapy; on basic supplemental oxygen; not requiring oxygen but requiring ongoing care; not requiring care. The final two categories covered patients released from the hospital.
NIAID said in response to questions Thursday that it made the switch eight weeks later to the more limited measure of “time to recovery'' based on modeling that took into account new information about the course of the disease. The initial measurement period of two weeks, it said, was deemed to be too short as scientists learned more about the lengthy time patients could be seriously ill with covid-19, NIAID said.
“Little was known regarding the natural course of covid-19 when the trial was initially designed, and the initial endpoint chosen specified a single timepoint for evaluation, namely day 14,” the institute said. “However, with the growing knowledge during the epidemic, we learned that covid-19 had a more protracted course than previously known.
“NIAID statisticians performed modeling of what happens if the right day is not picked for assessment, which revealed that meaningful treatment effects could be missed with that primary endpoint,'' NIAID said. “Time to recovery avoids this issue, and the change in primary endpoint seemed appropriate given the evolving clinical data.''
Government researchers who decided to make the switch in outcome measure did not have access to clinical data, NIAID added.
Gilead did not respond to a question about whether it had input on the decision to change the endpoint.
“NIAID changed the primary endpoint while the study was blinded,'' Gilead spokesman Ryan McKeel said in an email, a decision he said was “based on continuing discussions and evolving understanding of the disease.'' He added that it is important to note that death, ventilation and other measures are included in the list of the trial’s secondary outcome measures “and will be reported when the data are published."
An exact timetable for publication of the results has not been disclosed. In the absence of any other treatment for coronavirus, Fauci declared that remdesivir would become the standard of care for certain hospitalized patients. Clinicians are eagerly awaiting more data from the trial so they will know which patients stand to benefit the most.
Fauci’s announcement coincided with more negative results for remdesivir published in the medical journal The Lancet; that trial, a Chinese study that was stopped early because it did not recruit enough patients, showed no benefit of remdesivir over placebo, and also no benefit in survival.
Some experts in clinical trials raised questions about the change in outcome measures.
“It raises a lot of flags, and it requires a lot of answers,” Walid F. Gellad, a professor of health policy and management at the University of Pittsburgh’s Department of Medicine, said in an interview, “especially when people start saying it’s become the standard of care, and all we saw was a news release in a trial with an outcome that was changed two weeks ago. It really is striking.''
An expert in transparency in clinical trials at the University of Oxford, Henry Drysdale, said the Oval Office setting of Fauci’s announcement, combined with the limited data disclosed, raised important questions about the outcomes change that will need to be answered when the full results are published in a peer-reviewed journal. Drysdale is part of a team of researchers who, in a landmark study published last year, found discrepancies in trial designs and reported outcomes in major academic journals.
“It’s extremely worrying that those very important outcomes were dropped from the primary outcome,'' Drysdale said in an interview. Asked to assess NIAID’s statement issued to reporters on Thursday, Drysdale said, “Whenever I see an explanation like this, when an outcome-switching has happened, that’s fine, but you were not open about this when you reported your quote-unquote exciting results."
But a strong degree of transparency about the change, combined with NIAID’s assurances that trial leaders did not know trial results when they switched the outcome, should settle any lingering questions, experts agreed.
Milton Packer, a cardiologist and clinical trial investigator at Baylor University Medical Center, said that, based on Fauci’s disclosures, roughly 95 people died in both arms of the trial. That combined number may have led investigators to believe they would not have a large enough sample of deaths to be statistically significant, he said.
“If you knew that the number of observations was inadequate to answer the question, and you did not know the breakdown, then shifting the endpoint is not a problem,” Packer said.
Until last weekend, treatment for COVID-19 was primarily experimental. In hundreds of clinical trials across the globe, researchers are testing new drugs, as well as those that scientists created for other purposes, to stem the death toll the world is facing.
On March 28, 2020, the FDA [ https://www.fda.gov/emergency-preparedness-and-response/mcm-legal-regulatory-and-policy-framework/emergency-use-authorization#covidtherapeutics ] gave permission to doctors to use hydroxychloroquine sulfate and chloroquine phosphate products for the treatment of COVID-19 in adolescents and adults in situations where clinical trials were not an option.
Despite the hype around these drugs, the FDA followed up with an announcement on April 24, 2020, to highlight that they were investigating reports that some people had developed serious heart rhythm problems in response to the drugs.
“Hydroxychloroquine and chloroquine have not been shown to be safe and effective for treating or preventing COVID-19. They are being studied in clinical trials for COVID-19, and we authorized their temporary use during the COVID-19 pandemic for treatment of the virus in hospitalized patients when clinical trials are not available, or participation is not feasible, through an [EUA],” the FDA statement [ https://www.fda.gov/drugs/drug-safety-and-availability/fda-cautions-against-use-hydroxychloroquine-or-chloroquine-covid-19-outside-hospital-setting-or ] reads.
Much attention has since focused on a drug called remdesivir.
APPROVED FOR COVID-19
Veklury (remdesivir) is the first drug approved [ https://www.fda.gov/news-events/press-announcements/fda-approves-first-treatment-covid-19 ] by the Food and Drug Administration (FDA) to treat COVID-19, the disease caused by the new coronavirus. Veklury is approved to treat diagnosed or suspected COVID-19 in certain hospitalized people. The drug was previously granted an Emergency Use Authorization (EUA) [ https://www.fda.gov/emergency-preparedness-and-response/mcm-legal-regulatory-and-policy-framework/emergency-use-authorization ] by the FDA. This article is currently being updated to reflect this change.
Pharmaceutical company Gilead Sciences, Inc. developed remdesivir as part of their antiviral drug portfolio to treat viral infections. This included work on coronaviruses.
Back in 2017, a team of researchers from the University of North Carolina at Chapel Hill and Vanderbilt University in Nashville, TN, published a study with Gilead in the journal Science Translational Medicine [ https://stm.sciencemag.org/content/9/396/eaal3653?utm_campaign=toc_stm_2017-06-28&et_rid=17050501&et_cid=1410533 ] about remdesivir and coronaviruses.
“This drug was effective against multiple types of coronaviruses in cell culture[s] and in a mouse model of SARS and did not seem to be toxic,” the authors wrote in their paper. “Given its broad activity, this antiviral could be deployed to prevent spreading of a future coronavirus outbreak, regardless of the specific virus that jumps over.”
Gilead and the National Institutes of Health (NIH) also tested the drug in clinical trials for the treatment of Ebola [ https://www.niaid.nih.gov/diseases-conditions/ebola-treatment ] , but they announced in August last year that two other drugs are more effective.
So, how does remdesivir work?
The answer to this question became clearer earlier this year, when a team from the University of Alberta in Edmonton, Canada — along with scientists from Gilead — published a paper in the Journal of Biological Chemistry.
Coronaviruses use an enzyme called RNA-dependent RNA polymerase to copy their genetic material when they replicate inside an infected cell. Remdesivir is a nucleotide analog, or a synthetic mimic of a naturally occurring molecule that viruses need for replication.
According to the researchers, remdesivir stops the replication process in their model of the coronavirus that causes MERS.
On February 25, 2020, the NIH [ https://www.nih.gov/news-events/news-releases/nih-clinical-trial-remdesivir-treat-covid-19-begins ] began enrolling people into their remdesivir clinical trial to test the drug’s safety and efficacy in the treatment of COVID-19.
Several weeks earlier, researchers in China — along with international collaborators — started a separate trial of the drug in 10 hospitals in Hubei, China.
On April 23, 2020, news of the study’s failure began to circulate. It seems that the World Health Organization (WHO) had posted a draft report about the trial on their clinical trials database, which indicated that the scientists terminated the study prematurely due to high levels of adverse side effects.
The WHO withdrew the report, and the researchers published their results in The Lancet [ https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31022-9/fulltext ] on April 29, 2020.
The number of people who experienced adverse side effects was roughly similar between those receiving remdesivir and those receiving a placebo. In 18 participants, the researchers stopped the drug treatment due to adverse reactions.
What did the results say about the efficacy of the drug for treating COVID-19?
“Remdesivir use was not associated with a difference in time to clinical improvement,” write the authors in the paper. They did highlight that people who had symptoms that lasted 10 days or under did recover faster, although these results were not statistically significant.
One caveat with their study was the number of participants; the researchers terminated the trial earlier than planned as they were unable to recruit any more volunteers.
“Our trial did not attain the predetermined sample size because the outbreak of COVID-19 was brought under control in China,” they explain.
However, also on April 29, 2020, the National Institute of Allergy and Infectious Diseases (NIAID) announced that their NIH trial showed that remdesivir treatment led to faster recovery in hospital patients with COVID-19, compared with placebo treatment.
“Preliminary results indicate that patients who received remdesivir had a 31% faster time to recovery than those who received placebo,” according to the press release [ https://www.niaid.nih.gov/news-events/nih-clinical-trial-shows-remdesivir-accelerates-recovery-advanced-covid-19 ]. “Specifically, the median time to recovery was 11 days for patients treated with remdesivir compared with 15 days for those who received placebo.”
The mortality rate in the remdesivir treatment group was 8%, compared with 11.6% in the placebo group, indicating that the drug could improve a person’s chances of survival. These data were close to achieving statistical significance.
“More detailed information about the trial results, including more comprehensive data, will be available in a forthcoming report,” the press release continues.
To add to the story, on the same day, Gilead also issued a press statement about their phase III clinical trial of the drug. In the trial, the company compared 5 days of treatment with 10 days of treatment. There was no placebo group.
According to the company, 5 days of treatment had similar effects to 10 days of treatment in people with severe COVID-19.
“These study results complement data from the placebo-controlled study of remdesivir conducted by the [NIAID] and help to determine the optimal duration of treatment with remdesivir,” says Chief Medical Officer Dr. Merdad Parsey.
“The study demonstrates the potential for some patients to be treated with a 5-day regimen, which could significantly expand the number of patients who could be treated with our current supply of remdesivir. This is particularly important in the setting of a pandemic, to help hospitals and healthcare workers treat more patients in urgent need of care.”
On May 1, 2020, the FDA gave the go-ahead for clinicians to use remdesivir outside of clinical trials to treat COVID-19 in certain people.
“Today, the [FDA] issued an [EUA] for the investigational antiviral drug remdesivir for the treatment of suspected or laboratory-confirmed COVID-19 in adults and children hospitalized with severe disease,” a press statement [ https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-issues-emergency-use-authorization-potential-covid-19-treatment ] reads.
“While there is limited information known about the safety and effectiveness of using remdesivir to treat people in the hospital with COVID-19, the investigational drug was shown in a clinical trial to shorten the time to recovery in some patients.”
EUA [ https://www.fda.gov/emergency-preparedness-and-response/mcm-legal-regulatory-and-policy-framework/emergency-use-authorization#abouteuas ] is a type of approval that the FDA can issue for a medical product in situations that are serious or life threatening.
Prof. Stephen Evans, from the London School of Hygiene & Tropical Medicine in the United Kingdom, elaborates on this type of approval:
“The key element is that ‘there is no adequate, approved, and available alternative to the emergency use of remdesivir for the treatment of COVID-19.’ It sets out the conditions under which remdesivir may be distributed and used. It does not allow Gilead to market the drug. In this case, it allows doctors to obtain and use the drug in hospitalized patients with known or suspected severe COVID-19 and who require at least supplemental oxygen. The doses are set out and it must be injected in a hospital.”
Regarding whether or not the evidence available was sufficient to support the FDA’s decision to grant EUA, Prof. Evans explains that the study in The Lancet was well-conducted but ultimately too small to draw any conclusions.
“While compatible with the results shown in the NIAID trial, taken together they show the evidence of efficacy may not be quite as great as shown in the NIAID trial on its own,” he says. “In addition, there is another Chinese trial, also stopped because the numbers of new patients with COVID-19 had fallen in China so they were unable to recruit, which has not yet published its data,” Prof. Evans continues. “There are other trials where remdesivir is compared with non-remdesivir treatments currently [being] done and results from some of these should appear soon. A wider view will give a better understanding of the benefits and harms with remdesivir, but in this emergency, it is not totally unreasonable of the FDA to allow for its use, but it would undoubtedly have been better to provide more of the evidence in public.”
In a statement on April 29, 2020, Dr. Anthony Fauci, head of the NIAID, explained that the drug reduced the time that people were in the hospital by around 4 days — a 31% faster recovery time. “Although a 31% improvement doesn’t seem like a knockout 100%, it is a very important proof of concept,” he says. “What it has proven is that a drug can block this virus.”
In an interview with Reuters, Dr. Fauci explained why he had chosen to announce the results of the organization’s clinical trial last week.
“It was purely driven by ethical concerns,” he added. “I would love to wait to present it at a scientific meeting, but it’s just not in the cards when you have a situation where the ethical concern about getting the drug to people on placebo dominates the conversation.”
The reception by the scientific community has been mixed.
“It was expected to be a whopping effect,” Dr. Eric Topol — director of the Scripps Research Translational Institute in La Jolla, California — told Reuters, expressing his disappointment at the drug’s modest improvements. “It clearly does not have that.”
Others criticized the fact that the NIAID did not release the full dataset from their study.
“I want to see the full data. I want to understand the statistics. I want to understand the benefit and risk,” Dr. Steven Nissen, chief academic officer at the Cleveland Clinic, said to Reuters. “I want to understand the structure of the study, and all of it.”
“Remdesivir is not a cure for COVID-19,” said Prof. Derek Hill, from University College London in the U.K. “There is evidence from the preliminary analysis that it speeds up patient recovery. When more data [are] available, this may tell us whether or not remdesivir can save lives as well as speed up recovery.”
Meanwhile, Dr. Fauci acknowledged that the drug was not a panacea and drew parallels to the early work around the drug AZT to treat HIV.
“We know that was an imperfect drug. It was the first step,” he told Reuters. “Similar to AZT, it’s the first baby step toward what hopefully will be a number of better drugs that will come in and be able to treat people with COVID-19.”
Only time will tell how much remdesivir and any future iterations of the drug will change the course of the pandemic. Other clinical trials of the drug are ongoing, and our only option is to eagerly await the results and see how they compare with the research so far.
COVID-19 Drugs: A research study by Columbia University, Northwell Health and Massachusetts General Hospital shows that Famotidine, a common heartburn drug improved the clinical outcomes of hospitalized COVID-19 patients.
The study involving 1620 patients from more than 10 hospitals in the United States showed that Famotidine associated with reduced risk of intubation or death in hospitalized COVID-19 patients. However further randomized controlled trials are warranted and also detailed studies are needed to understand the mode of its efficacy. ( See https://www.medrxiv.org/contenU10.1101 /2020.05.01 .20086694v1 .full.pdf+html ).
The drug was chosen as earlier drug repurposing computer modeling studies showed that the drug molecular structure had very good potential to block 'docking sites' on the spike protein structures of the SARS-CoV-2 coronavirus, rendering the virus to become inactive and not capable of entering host cells and replicating.
Famotidine is an approved US FDA drug has been on the market for nearly 40 years and is an active ingredient in the popular over-the-counter heartburn treatment Pepcid.
Dr Joseph Conigliaro, a coauthor of the research study and a doctor at Northwell Health said, "Based on what we've learned in this study, it's encouraging. This association is actually really compelling."
Of the 1,536 patients in the study who were not taking famotidine, 332, or 22%, either died or were intubated and put on a ventilator. Among the 84 patients who were taking famotidine, 8, or 10%, died or were put on a ventilator.
Dr Conigliaro added, "Compared to the rest of the patients, those who received famotidine had a greater than 2-fold decreased risk of either dying or being intubated."
Patients who were taking famotidine started the drug within 24 hours of being admitted to the hospital. Some took it orally and some intravenously, at varying dosages. About 15% of them were already taking it at home.
Medical researchers from Columbia University Irving Medical Center said, "It is not clear why those patients who received famotidine had improved outcomes. This is merely an association, and these findings should not be interpreted to mean that famotidine improves outcomes in patients hospitalized with COVID-19."
Doctors from other hospitals are warned not to prescribe famotidine just yet till the results of another clinical trial is concluded. This clinical trial, where patients are randomly assigned to get either famotidine or a placebo and then studied, can determine if the drug really works against COVID-19.
Columbia University and Northwell Health and are now conducting a clinical trial where some patients are receiving intravenous famotidine at a dosage nine times higher than what is given for heartburn. Others are receiving a placebo, or a drug that does nothing. Dr Conigliaro, who's heading up that trial, said preliminary results would likely be announced in a few weeks.
Dr Conigliaro said 233 patients have been enrolled in the study, and Northwell had planned to announce preliminary results when they enrolled 390 patients. However, since the number of patients with coronavirus in New York has declined, they might decide to announce the preliminary results with fewer patients.
A world renowned infectious disease doctor, Dr Michael Callahan from Massachusetts General Hospital was the first to call attention to the drug in the United States. In mid-January, he was in Nanjing, China, working on an avian flu project. As the COVID-19 epidemic began to explode in Wuhan, he followed his Chinese colleagues to the increasingly desperate city.
The virus was killing as many as one out of five patients older than 80. Patients of all ages with hypertension and chronic obstructive pulmonary disease were faring poorly. Dr Callahan and his Chinese colleagues got curious about why many of the survivors tended to be poor. In analyzing 6212 COVID-19 patient records, the physicians noticed that many survivors had been suffering from chronic heartburn and were on famotidine rather than more-expensive omeprazole (Prilosec), the medicine of choice both in the United States and among wealthier Chinese. Hospitalized COVID-19 patients on famotidine appeared to be dying at a rate of about 14% compared with 27% for those not on the drug.
Upon returning from Wuhan, he briefed Dr Robert Malone, chief medical officer of Florida-based Alchem Laboratories, a contract manufacturing organization. Dr Malone is part of a classified project called DO MANE that uses computer simulations, artificial intelligence, and other methods to rapidly identify U.S. Food and Drug Administration (FDA)approved drugs and other safe compounds that can be repurposed against threats such as new viruses.
Dr Malone had his eyes on a viral enzyme called the papain-like protease, which helps the pathogen replicate. To see whether famotidine binds to the protein, he needed the enzyme's 3D structure and recruited computational chemist Joshua Pottel, president of Montreal-based Molecular Forecaster, to create the modeling involving two crystal structures of the protease from the 2003 SARS coronavirus, combined with the new coronavirus' RNA sequence and to predict the drug molecular structure ability to 'dock' on those sites.
Among other things, they compared the gene sequences of the new and old proteases to rule out crucial differences in structure. Pottel then tested how 2600 different compounds interact with the new protease. The modeling yielded several dozen promising hits that pharmaceutical chemists and other researchers narrowed to three. Famotidine was one. (The compound has not popped up in in vitro screens of existing drug libraries for antiviral activity, however.)
Armed with he research from China and the modeling pointing toward famotidine, a low-cost, generally safe drug, Dr Callahan contacted Dr Kevin Tracey, a former neurosurgeon in charge of the Northwell hospital system's research about running a double-blind randomized study. COVID-19 patients with decreased kidney function would be excluded because high doses of famotidine can cause heart problems in them.
Upon securing the US FDA approval, Northwell used its own funds to launch the effort. Just getting half of the needed famotidine in sterile vials took weeks, because the injectable version is not widely used. On 14 April, the U.S. Biomedical Advanced Research and Development Authority (BARDA) gave Alchem a US$20.7 million contract for the trial, most of which paid Northwell's costs.
The anecdotal evidence had encouraged the Northwell researchers. After speaking to Dr Tracey, Dr David Tuveson, director of the Cold Spring Harbor Laboratory Cancer Center, recommended famotidine to his 44-year-old sister, an engineer with New York City hospitals. She had tested positive for COVID-19 and developed a fever. Her lips became dark blue from hypoxia. She took her first megadose of oral famotidine on 28 March. The next morning, her fever broke and her oxygen saturation returned to a normal range. Five sick co-workers, including three with confirmed COVID-19, also showed dramatic improvements after taking over-the-counter versions of the drug, according a spreadsheet of case histories Dr Tuveson shared.
After an email chain about Tuveson's experience spread widely among doctors, Dr Timothy Wang, head of gastroenterology at Columbia University Medical Center, saw more hints offamotidine's promise in his own
retrospective review of records from 1620 hospitalized COVID-19 patients. He shared the results with Dr Tracey and Dr Callahan, and he added them as a co-authors on a paper now under review at the Annals of Internal Medicine.
Some medical experts say that when analyzing study and clinical trial results of chloroquine, hydroxychloroquine and remdesivir, famotidine might be a better alternative compared to a toxic drug like remdesivir that is extremely expensive (ie between US$ 6,000 to US$12,000 per dose) and has yet to show any true efficacy against the SARS-CoV-2 coronavirus except for data that shows its shortens hospitalization. Despite lack of concrete efficacy proof and also safety studies of the drug, remdesivir is already being approved for usage by the US FDA to treat COVID-19.
Famotidine is a commonly used drug to treat gastric reflux and is also extremely cheap. In most Asian countries, a generic packet of 100 tablets of famotidine tablets cost less than US $3. A vial of 40mg injectable famotidine costs only US $4. In the study, both oral and intravenous versions were used. However Thailand Medical News warns readers to not to self-presecribe and to always consult a doctor before taking any drugs or supplements.
Daniel E. Freedberg, MD, MS,1 Joseph Conigliaro, MD, MPH,2 Timothy C. Wang, MD,1 Kevin J. Tracey, MD,9 Michael V. Callahan, MD,10 Julian A. Abrams, MD, MS1 on behalf of the Famotidine Research Group
Famotidine Research Group: Magdalena E. Sobieszczyk, MD, MPH,3 David D. Markowitz, MD,1 Aakriti Gupta, MD, MS,4 Max R. O’Donnell, MD, MPH,5 Jianhua Li, MD,6 David A. Tuveson, MD, PhD,7 Zhezhen Jin, PhD,8 William C. Turner, MD,6 Donald W. Landry, MD, PhD6
2020-05-23-research-square-famotidine-histamine-mast-cells-and-mechanisms-version-1.pdf
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Robert W. Malone, Philip Tisdall, Philip Fremont-Smith, Yongfeng Liu, Xi-Ping Huang, Kris M. White, Lisa Miorin, Elena Moreno Del Olmo, Assaf Alon, Elise Delaforge, Christopher D. Hennecker, Guanyu Wang, [Dr. Joshua Pottel (born 1989)], Nora Smith, Julie M. Hall, Gideon Shapiro, Anthony Mittermaier, Andrew C. Kruse, [Dr. Adolfo Garcia-Sastre (born 1964)], Bryan L. Roth, Jill Glasspool-Malone, and Darrell O. Ricke
This article has been published "COVID-19: Famotidine, Histamine, Mast Cells, and Mechanisms" in Front Pharmacol.
https://www.frontiersin.org/articles/10.3389/fphar.2021.633680/full
SARS-CoV-2 infection is required for COVID-19, but many signs and symptoms of COVID-19 differ from common acute viral diseases. Currently, there are no pre- or post-exposure prophylactic COVID-19 medical countermeasures. Clinical data suggest that famotidine may mitigate COVID-19 disease, but both mechanism of action and rationale for dose selection remain obscure. We explore several plausible avenues of activity including antiviral and host-mediated actions. We propose that the principal famotidine mechanism of action for COVID-19 involves on-target histamine receptor H2 activity, and that development of clinical COVID-19 involves dysfunctional mast cell activation and histamine release.
NOTE - David Hone helped on the following presentation ... "This work has also benefitted from advice, guidance, information and comments provided by Drs. Revell Phillips, Howard Haimes, [Dr. David Michael Hone (born 1960)], and Roland Seifert"
by Bethany Halford / June 15, 2020 | A version of this story appeared in Volume 98, Issue 25
Also see : SARS-COV2 famotidine trials (2020) ; Mentioned : DOMANE / Dr. Robert Wallace Malone (born 1959) /
The image below is [HP00CE][GDrive] ; couldnt save entire source as a PDF.
Doctors and scientists are studying many existing drugs with the hope of finding therapies they can repurpose to fight COVID-19. Some of these, like Gilead Sciences’ remdesivir, directly go after the virus SARS-CoV-2, which causes the disease. Others, like Incyte’s ruxolitinib, aim to dampen the overactive immune response that characterizes later stages of disease in COVID-19.
And then there are the oddballs. Take famotidine, the active ingredient in the over-the-counter heartburn drug Pepcid. The histamine-H2-receptor antagonist works by preventing stomach acid production. That it would have any activity in an infectious disease is a bit of a head-scratcher.
Doctors first became interested in famotidine after hearing reports that people in China who took the drug for heartburn were surviving COVID-19, while other people who essentially had the same risk factors but were taking different heartburn drugs like cimetidine or omeprazole (sold in the US as Tagamet and Prilosec, respectively) were dying from the disease. Perhaps famotidine was somehow bolstering these patients and improving their chances for survival.
In early April, doctors began a clinical trial at New York’s Northwell hospitals to test that theory. [See SARS-COV2 famotidine trials (2020)] They reasoned that even if evidence for famotidine’s effectiveness was largely anecdotal, the drug has been around since the 1980s and has a good safety profile. If it worked, it would be a fast and cheap way to ease the symptoms of COVID-19.
They decided to use high doses of intravenous famotidine. Their goal was to enroll 1,200 people with moderate to severe COVID-19 and see if those that got famotidine were less likely to die or require a ventilator. Then, in late April, the first news report about the trial appeared in Science. Boxes of Pepcid began to fly off of pharmacy shelves as people sought out any potential remedy during the pandemic.
Shortly afterward, on May 8, a team, led by Columbia University doctors Daniel Freedberg and Julian Abrams, posted a study on the preprint server medRxiv that compared the outcomes of people with COVID-19 who were prescribed famotidine within 24 hours of being admitted to the hospital to those who didn’t get the heartburn drug. They looked at the records of more than 1,600 patients at Columbia University Irving Medical Center between late February and mid-April. Of those, 84 patients received 10–40 mg of intravenous famotidine daily over the course of about 6 days.
The patients who got famotidine fared better. According to the study, they were far less likely to die or require a ventilator—a twofold decrease in risk—than those not receiving the drug. The results were published in the peer-reviewed journal Gastroenterology later in May (2020, DOI: 10.1053/j.gastro.2020.05.053).
“This is merely an association, and these findings should not be interpreted to mean that famotidine improves outcomes in patients hospitalized with COVID-19,” the team says in a statement. “It is also not clear why those patients who received famotidine had improved outcomes.”
For clarity on famotidine’s effectiveness, the team recommends awaiting the outcome of the trial going on at Northwell hospitals. “Hopefully the results from this trial will determine whether famotidine is efficacious for the treatment of COVID-19,” the team says in its statement.
Meanwhile, in early June, the journal Gut published a small case series of 10 people who developed COVID-19 and reported taking famotidine during their illness (2020, DOI: 10.1136/gutjnl-2020-321852). These people were not sick enough to go to the hospital, but their symptoms, such as cough and shortness of breath, improved within a day or two of taking the heartburn drug. It’s a small study, and the researchers acknowledge that it’s not enough to establish there’s any real benefit from taking famotidine for people who have COVID-19. Those authors recommend a clinical trial with famotidine be carried out with patients with milder disease in addition to the trial going on at Northwell hospitals.
Matthew D. Hall, acting director of biology and group leader, Early Translation Branch, at NIH’s National Center for Advancing Translational Sciences : "I think there’s going to be some intriguing science trying to draw a connection between the activity—if it is proven to have that in patients—and how it’s actually working in the context of SARS-CoV-2 infection."
But the Northwell trial has slowed for two reasons, says Joseph Conigliaro, the physician who is leading it. Cases of COVID-19 in New York have declined, making it challenging to reach the enrollment requirements for the study.
And shifting treatment approaches have further complicated efforts. When the trial began, COVID-19 patients in New York were getting the antimalarial hydroxychloroquine as part of their treatment regimen. So the study was designed to compare patients receiving hydroxychloroquine and famotidine with patients receiving hydroxychloroquine and a placebo. But that standard treatment regimen has changed, and hydroxychloroquine is no longer given routinely. As a consequence, the researchers are looking to modify the study’s protocol, Conigliaro says.
Until the results of the study are in, Conigliaro can’t say whether famotidine works. “As a physician, I can’t tell people ‘go out and buy famotidine, and if you start getting an inkling of anything start taking it,’ ” he says. Even though the drug has long been considered safe, it’s unclear how to guide people to take it in terms of dose and disease stage. “We need to wait for the results of our trial,” he says.
Scientists are meanwhile trying to figure out why a heartburn medicine might also fight COVID-19. Using computational methods, a group in China used SARS-CoV-2 genes to predict the structures of viral proteins. The group then computationally screened existing drugs to see which could potentially act on those protein targets. Their study suggests that famotidine could inhibit the virus’s 3-chymotrypsin-like protease, which plays a role when the coronavirus makes copies of itself while inside the host (Acta Pharm. Sin. B 2020, DOI: 10.1016/j.apsb.2020.02.008).
Similarly, computational chemists at the scientific software company Molecular Forecaster virtually docked a library of 2,700 existing drugs and nutraceuticals to see which fit into a model of the papain-like protease, another key protein in SARS-CoV-2 replication. They were collaborating with scientists working for a US Department of Defense project called [DOMANE]. Famotidine was one of a few drugs that appeared to interact with the protease in the computational studies, says [Dr. Robert Wallace Malone (born 1959)], a physician and consultant who is on the [DOMANE] team.
But other evidence derails those computational studies. Matthew D. Hall, acting director of biology and group leader, Early Translation Branch, at the National Center for Advancing Translational Sciences (NCATS), part of the US National Institutes of Health, points out that his group did studies in cells that show famotidine doesn’t have any ability to fight SARS-CoV-2. “In a direct antiviral assay, we don’t see any activity for any of the compounds in this class,” he says.
As a drug-repurposing candidate, Hall says, famotidine is attractive because it’s safe, affordable, and accessible. But making further conclusions about its usefulness in COVID-19 will require clinical trial data. If those trials show promise, Hall says, “I think there’s going to be some intriguing science trying to draw a connection between [clinical] activity and how it’s actually working in the context of SARS-CoV-2 infection. Understanding the primary mechanism may also drive long-term development of new therapeutics that are more potent.”
[Dr. Robert Wallace Malone (born 1959)] has been working with a team of scientists to get a better understanding of just how famotidine might be working. Results of his team’s study, which have not yet been peer reviewed, appeared on a preprint server on May 23 (Research Square 2020, DOI: 10.21203/rs.3.rs-30934/v1).
Like the NCATS work, the team’s tests showed that famotidine has no effect on SARS-CoV-2’s papain-like protease, nor does it kill the virus. Instead, Malone and colleagues think the drug is working through its usual target—histamine H2 receptors. Famotidine treats heartburn by blocking H2 receptors, which when activated by histamine stimulate cells in the stomach to secrete acid.
Joseph Conigliaro, chief, General Internal Medicine, Northwell Health : "As a physician, I can’t tell people ‘go out and buy famotidine and if you start getting an inkling of anything start taking it.’ "
But H2 receptors aren’t just in the stomach—they’re all over the body. Malone and colleagues argue that COVID-19 is disrupting mast cells, which release histamine and other signaling molecules in response to an inflammatory or allergic reaction. These cells can be found at the boundary between tissue and an external environment. They’re on the skin and line the gut and lungs. Malone reasons that mast cells could be responsible for the overactive immune response, often described as the cytokine storm, which does damage to patients with severe cases of COVID-19. By blocking the histamine that mast cells release, famotidine can dampen some of that response.
If famotidine is effective in COVID-19, why isn’t the other commonly used H2 blocker, cimetidine? The answer, Malone claims, comes down to pharmacokinetics: famotidine makes it into the bloodstream more readily than cimetidine.
Adrian M. Piliponsky, an immunologist at Seattle Children’s Research Institute who studies mast cells, says that it’s possible mast cells are playing a role in the inflammatory response to COVID-19. He notes that mast cells play a role in infections with other viruses. He thinks the idea proposed by Malone and colleagues merits further study, and he’s interested in seeing the results of the clinical trial.
[Dr. Robert Wallace Malone (born 1959)] also would like to see a comprehensive trial of famotidine in people who are in the early stages of COVID-19. But he doesn’t think the drug alone will resolve the world’s COVID-19 pandemic. “We’re committed to trying to create an outpatient cocktail of drugs that will significantly reduce morbidity and mortality for COVID-19 and have it ready for deployment in the fall,” he says.
In the meantime, doctors are urging caution for people who might see these early results and rush out to stock up on Pepcid. Carl J. Lavie, medical director of cardiac rehabilitation and prevention at the John Ochsner Heart and Vascular Institute, recently cowrote a letter to the editor of Mayo Clinic Proceedings encouraging doctors to wait for the clinical trial results.
He tells C&EN that it’s premature to recommend famotidine just for COVID-19, but he adds, “I also think that it is benign, so it would seem very reasonable to use for upper GI symptoms now” before giving other heartburn drugs like omeprazole.
CORRECTION : This story was updated on June 16, 2020, to correctly characterize famotidine as a histamine-H2-receptor antagonist, not an agonist.
CORRECTION : This story was updated on June 22, 2020, to correctly identify the group that did a virtual docking study. It was chemists at Molecular Forecaster, not [DOMANE].
Version 2. Res Sq. Preprint. 2020 Jun 22.
doi: 10.21203/rs.3.rs-30934/v2 / PMCID: PMC7336703 / PMID: 32702719
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A nearly $21 million government-funded study to see if a popular, over-the-counter heartburn medication could be a COVID-19 remedy has fizzled amid allegations of conflicts of interest and scientific misconduct, according to interviews, a whistleblower complaint and internal government records obtained by The Associated Press.
In mid-April, the Trump administration funded a study of famotidine, the main ingredient in Pepcid, despite a lack of published data or studies to suggest heavy doses would be effective against the novel coronavirus. When government scientists learned of the hastily produced proposal to spend millions in federal funding on the research, they considered it laughable.
Now, the Pepcid project faces an uncertain future. Northwell Health, the New York health care provider hired to conduct the testing at its hospitals, put the trial on hold due to a shortage of hospitalized COVID-19 patients in that state. Northwell is partnered with Alchem Laboratories, the Florida-based pharmaceutical company that received the contract.
The Pepcid project underscores what critics describe as the Trump administration’s casual disregard for science and anti-corruption rules — regulations meant to guard against taxpayer dollars going to political cronies or funding projects that aren’t based on more rigorous science.
It was harshly criticized by a government whistleblower, Rick Bright. He filed a complaint accusing a senior administration health official of rushing the deal through without the scientific oversight necessary for such a large federal award.
The government had very little data on which to base a funding decision about Pepcid and COVID-19, critics say; there was no high-grade research on famotidine’s coronavirus-fighting potential to underpin a clinical trial involving hundreds of patients.
“The evidence used to support the trial is extremely weak,” said Dr. Steven Nissen, a Cleveland Clinic cardiologist and a frequent adviser to the Food and Drug Administration. “And I’ve been very critical of this approach to the COVID-19 epidemic, which I’ve likened to throwing spaghetti at the wall and seeing what sticks. I consider trials like this one to be largely a waste of time and money.”
Northwell Health spokesman Matthew Libassi declined to comment on Bright’s whistleblower complaint. “With respect to the famotidine trial, we are confident it is based on sound science,” he said.
Meanwhile, two researchers are locked in a dispute about how the project came to be and who should get credit for the idea.
Dr. Robert Malone, a molecular virologist who was Alchem’s chief medical officer when it won the Pepcid contract, says he was the first to come up with the idea that Pepcid might be effective against COVID-19.
He says he got a call on Jan. 4 from a fellow American doctor working in China, Michael Callahan, who told him about the new virus causing severe respiratory illness. Malone then ran the virus’s genetic sequence through computer models designed to find already-approved drugs that might work to thwart the virus, he said. Famotidine turned up as a promising lead.
Callahan, who had been working in Wuhan, China, separately claimed he saw data indicating famotidine’s potential in COVID-19 patients, according to promotional materials about a potential Pepcid trial. But Callahan, described by Science Magazine as the “first to call attention to the drug in the United States,” never publicly produced any data from his time in Wuhan, according to Malone.
Callahan did not respond to requests for comment.
But Callahan pitched the idea to a key Trump appointee, Dr. Robert Kadlec, assistant secretary for preparedness and response at the Department of Health and Human Services.
On March 20, Kadlec wrote to Northwell’s executive vice president for research, telling him to work with Callahan to prepare a contract proposal and a draft budget for the Pepcid trial.
Federal pandemic response scientists at HHS’ Biomedical Advanced Research and Development Authority, or BARDA, were shut out of these early conversations over famotidine. Rick Bright, BARDA’s director at the time, would later file a whistleblower complaint alleging unethical conduct by agency leadership, and point to the Pepcid trial as a key example.
“By directing a member of his staff (Callahan) to work as an agent of both the company and the government regarding the proposal, Dr. Kadlec was inviting violations of federal procurement law,” Bright said in his complaint.
Kadlec did not respond to questions about Bright’s allegations, but an HHS spokesperson said senior federal executives often seek expertise both inside and outside of the government. “In that regard, Kadlec is no different,” the department’s spokesperson said in an email.
But two other federal scientists on Bright’s team shared his worries that Callahan’s involvement appeared to be a conflict of interest. Several of them initially saw the Pepcid proposal as a joke; the request was based purely on anecdotal evidence for a trial that would cost millions and take months.
Their concerns were ignored, according to Bright’s complaint and government records. Kadlec oversees Bright’s agency and wanted the Pepcid contract approved — fast.
Soon, Bright was reassigned to a lesser role in government.
In late March, the FDA expressed concerns over the famotidine dosage patients were to receive intravenously but agreed to approve the trial after Northwell said it would reduce it, records show. But a senior agency official said the reduced dosage still pushed the levels “to the limits” when compared to previous clinical tests and toxicology studies in animals.
Still, the fast-moving Pepcid proposal had snared the interest of top leadership at HHS, including Secretary Alex Azar, according to the internal emails. After Callahan and Northwell looped in Azar and other top administration officials, however, FDA approved the trial quickly, internal emails show.
Experts who conduct clinical trials said this Pepcid study would not have been funded under ordinary, non-pandemic circumstances
“We don’t have enough small studies to show that this is a drug worth pursuing,” said Dr. George Abraham, chair of the American Board of Internal Medicine’s infectious disease group.
Malone resigned as Alchem’s chief medical officer the week the company got the testing contract. He complained of a difficult work environment, and has since been critical of Callahan and the project.
“The Northwell trial is just a zombie at this point,” Malone said. “Completely irrelevant, except in a negative sense.”
Still, Kadlec said through a spokeswoman he would choose to fund the trial again. “If it could save lives, yes.”
https://www.newspapers.com/image/679279918/?terms=pepcid%20malone&match=1
2020-07-26-star-tribune-minneapolis-st-paul-pg-a6.jpg
By Tina Hesman Saey / JULY 27, 2020 AT 6:00 AM
2020-07-27-sciencenews-org-coronavirus-covid-19-heartburn-medicine-pepcid-does-not-work-antiviral.pdf
2020-07-27-sciencenews-org-coronavirus-covid-19-heartburn-medicine-pepcid-does-not-work-antiviral-img-1.jpg
An over-the-counter heartburn remedy probably won’t directly stop coronavirus infections, a new study suggests.
Anecdotal reports from China suggested people hospitalized with COVID-19 who were taking famotidine (sold under the brand name Pepcid) had better outcomes than people who took a different type of antacid called a proton pump inhibitor. But famotidine has no direct antiviral activity against SARS-CoV-2, the virus that causes COVID-19, according to preliminary results reported July 15 at bioRxiv.org.
Those findings, which have not been reviewed by other scientists yet, suggest famotidine won’t help prevent coronavirus infections or illness. But they don’t rule out that the drug might help in other ways, says Mohsan Saeed, a virologist at Boston University School of Medicine. “We’re not challenging that famotidine might help,” he says. “We’re saying that the mechanism of action is not antiviral.”
The result isn’t a complete surprise. “A compound of this nature having any role in infectious disease is kind of a head-scratcher,” Saeed says. But a couple pieces of evidence had hinted that it might help against the virus.
Besides the reports out of China, two studies using computer simulations of coronavirus proteins predicted that famotidine might dock with and inhibit important viral enzymes called proteases that help the virus replicate. Based on those findings, Northwell Health in the New York City area began a clinical trial to test the antacid against the coronavirus in people.
“We were kind of surprised, because there is no laboratory evidence to show that this compound might have some effect,” Saeed says.
The data that originally suggested benefits from famotidine aren’t strong enough to justify basing treatments on the drug, says Tobias Janowitz, an oncologist and biomedical scientist at Cold Spring Harbor Laboratory in New York, who was not involved in the study. “Everything that has been published so far cannot be considered evidence for clinical efficacy,” he says. That includes a small study Janowitz was involved in which also found hints that over-the-counter Pepcid might improve symptoms for some people diagnosed with COVID-19.
Just “because a statistical association exists in these anecdotal reports doesn’t mean it is actually doing anything,” Shmuel Shoham, an infectious disease specialist at Johns Hopkins Medicine said June 26 during a news conference announcing the Infectious Diseases Society of America’s revised treatment guidelines. The infectious disease society doesn’t recommendtaking famotidine as a coronavirus treatment outside of a clinical trial.
To test famotidine’s antiviral activity, Saeed teamed up with Ali Munawar, cofounder and chief executive of Boston-based Bisect Therapeutics, Inc. Munawar’s lab did two different biochemical analyses to test whether Pepcid can bind to viral proteases as the computer simulations had predicted. Neither test showed any sign of binding.
But it was still possible that the antacid might work in other ways against the protease enzyme. So the team conducted separate analyses of enzyme activity which found no protease inhibition at all.
The team also tested whether famotidine could stop the coronavirus from infecting monkey cells or human lung cells grown in lab dishes. “We did not see any effect on viral infection,” Saeed says. By comparison, the antiviral drug remdesivir “nicely inhibited viral replication,” he says (SN: 7/13/20).
While the work has not yet been vetted by other scientists for publication in a scientific journal, the results are in line with unpublished findings from Janowitz’s Cold Spring Harbor colleagues Leemor Joshua-Tor and Nicholas Tonks who found that famotidine doesn’t inhibit the proteases as predicted, he says.
Researchers say there is still a chance that famotidine might help slow the hyperactive immune system reactions known as cytokine storms, which do damage in some severely ill COVID-19 patients (SN: 7/2/20).
“We’re not shutting the door on this being an effective therapy,” Shoham said, but doctors should not prescribe the drug to treat COVID-19 and people should not take over-the-counter Pepcid as a coronavirus remedy. The antacid needs further study in randomized clinical trials, he said. Janowitz and colleagues are planning just such a trial.
M. Loffredo et al. The effect of famotidine on SARS-CoV-2 proteases and virus replication. Biorxiv.org. July 15, 2020. doi: 10.1101/2020.07.15.203059
By AUSTIN MONTGOMERY Staff Writer / Jul 28, 2020
2020-07-28-beloitdailynews-com-every-level-of-beloit-health-system-comes-together-to-fight-covid-19.pdf
2020-07-28-beloitdailynews-com-every-level-of-beloit-health-system-comes-together-to-fight-covid-19-img-1.jpg
BELOIT — “Critical care is where you go to either live or die. My job is to do my best to make sure that (you) live.”
That’s how Brittney Troxel, an inpatient critical care nurse at Beloit Health System, described her role in caring for COVID-19 patients.
Her role, along with hundreds of other Beloit Health System doctors, nurses and support staff, was turned upside down starting in March as the world grappled with a deadly virus with no known cure.
“I was no longer taking care of patients after open heart surgery, battling sepsis, suffering a cardiac event, or critical post-operative patients,” Troxel said. “Instead I was battling a monster that was foreign to me, that did things to the body that I had never seen before, that caused otherwise healthy individuals to need lifesaving care.”
COVID-19 came to the Stateline Area’s front door, wreaking havoc on daily life as schools closed, businesses shuttered and people scrambled to make sense of something not seen in a century: A global pandemic.
“The world woke up to a viral infection that had impact on lung function and extra-pulmonary effects that hits multiple systems in the body,” said Dr. Joseph Kittah, the health system’s lead intensivist and pulmonologist who has attended to all COVID-19 patients at the hospital.
Before the health system converted a critical care detachment into a COVID-19 unit with an adjoining COVID-19 floor, Kittah, along with Infectious Diseases Specialist Dr. Vijaya Somaraju, knew the virus was coming—and fast.
“We did in-house training for nurses, technicians and providers as to what to do,” Kittah said. “The administration was able to get personal protective equipment (PPE) in good time and we had a flow put together as to how to bring patients who where either confirmed or suspected cases.”
A testing site opened at the Beloit Memorial Hospital campus in March and hospital staff were shifted from their usual roles to handle the health system’s COVID-19 response.
Beloit Health System nurse Stephanie Wicks, who works in the Beloit Memorial Hospital Emergency Department, called the ED “the first line of defense for illnesses, accidents, and any number of things in between.”
Wicks said “many aspects” of the ED changed with the onset of COVID-19, noting that staff are trained within their scope of practice to be able to provide care to patients.
“The basis of how we care for patients hasn’t changed, we still approach each patient prepared to address and care for their needs,” Wicks added. “What has changed is being more diligent in assessing for symptoms that could be related to COVID-19 and making sure to ask the right questions and perform thorough assessments to identify things the patient themselves may not be aware of.”
COVID-19 humbled doctors around the world, forcing health care experts to “go back to basics” in terms of critical care management and patient care, Kittah said.
“It’s been a steep learning curve, but we’ve learned a lot about the disease and I think we better understand it now from three months ago,” Kittah said. “I think that right now from how the workflow is designed; how the ICU is organized; how our nurses care for these patients; we are beginning to be able to anticipate patient needs. The teamwork has been remarkable and the outcomes we see here are a reflection of the kind of work that we’ve learned from this disease.”
Nine Beloit residents have died due to COVID-19 as of July 13, but Kittah says the health system is bucking a national trend of seeing spiking death counts, something he directly attributes to the teamwork of the entire health system.
Kittah recalled a female patient who has been in the COVID-19 ICU unit the longest—over two months—that is now “thriving” after being placed on a ventilator twice. Those on the COVID-19 unit adapted to an unforgiving cycle of twists and turns as patient conditions worsened as their bodies attempted to fight off the virus.
“As a critical care physician, you thrive on reward and the positive reward and positive outcomes keeps you going,” Kittah said. “She had written her last words. She thought she was going to die, but she made it. That is rewarding to see that the strategies we have in place work and she’s alive today in part because of them. That’s what we live for and we hope to continue to make an impact on these patients.”
Troxel highlighted the fragility of the condition COVID-19 patients were in, saying, “We saw otherwise healthy patients teeter tottering on the plane of the living and that of the dead. The condition of the patient could change from stable to life threatening in seconds.”
As critical care units in the Stateline Area and around the world continue to care for critically ill patients, work on a vaccine is underway, but the path for any immunization will be lengthy and require countless hours of research, Somaraju said.
Somaraju added it could take 12 to 18 months or more for a vaccine to reach public distribution.
“In a normal time, vaccines aren’t released for three to five years,” Somaraju said. “In a crisis, that can be minimized down to that shorter time frame, but that takes a lot of scientific knowledge and so much goes into that. I think we have the technology and all the science is there, but testing trials is where I think the real challenge will be.”
On July 14, the National Institute of Health announced that an experimental COVID-19 vaccine was “generally well tolerated” by healthy adults in a 45-person study, according to interim results published in the New England Journal of Medicine.
Work fighting the virus in the Stateline Area is far from over, Kittah said.
“By no means is this virus gone,” Kittah said. “This is by no means over. We still have cases coming in seemingly every day. We still have patients in the ICU right now. We anticipate going into the fall it’s a possibility to see an uptick in the number of cases but we are better situated to deal with this virus.
“Don’t think about just yourself. This goes beyond the end of it all. We have to have a team approach to this thing. The least the community can do is adhere to basic principles of pandemic control by masking, physical distancing and proper hand hygiene.”
Even when the incidence of COVID-19 slows down, Kittah said the implications of combating a pandemic will have changed the U.S. medical community.
“I think there’s been a fundamental change in the way we practice medicine in this country,” Kittah said. “I’ve seen how COVID has restructured medicine generally. From how we do research, how we care for patients, even learning to protect ourselves to care for these patients. Research has moved quite a way. It’s touched the way we practice medicine.”
If there’s COVID-19 in the Beloit area, healthcare and frontline workers will continue to selflessly care for the public.
“I was never afraid to work in the COVID unit,” Troxel said. “When I was asked to go there I didn’t even give it a second thought. I knew that people needed help and I was in a position to help them, but I was fearful that I would bring COVID home to my family.”
All Beloit Health System staff interviewed by the Beloit Daily News said everyone should take responsibility to practice basic public health guidelines like social distancing, wearing a mask and hand-washing.
“These things you feel that someone has taken your rights away, but when you see that these are important things to build back the economy and build back that autonomy, if we all practice these things we will come out of this with flying colors,” Somaraju said.
“I would definitely recommend that you take precautions when you are out in public,” Troxel said. “Please wash your hands and use hand sanitizer. Try not to touch your face and mouth and wear a mask if you are able.”
https://theintercept.com/2020/11/09/biden-covid-task-force/
Source PDF : [HP00A6][GDrive] / Also see : Dr. Robert Wallace Malone (born 1959)
Famotidine is an exquisitely specific inverse agonist of the human histamine H2 receptor. This agent is primarily administered as a treatment for gastroesophageal reflux disease (GERD) and related foregut disorders attributable to acid hypersecretion. Early in the COVID-19 outbreak, multiple research groups employing computational docking algorithms (computer programs that predict the interactions between small molecules and proteins at the atomic level) identified famotidine as a potential competitive inhibitor of both principal proteases expressed by the novel human coronavirus SARS-CoV-2. These groups posited that this remarkably safe, inexpensive, off-patent (generic) drug might directly inhibit replication of SARS-CoV-2, providing clinical benefit for COVID-19 patients. Subsequent non-clinical bench research has clearly demonstrated that famotidine does not bind to either protease to a significant extent and does not inhibit SARS-CoV-2 replication (see [1] for summary). Many of the unique clinical symptoms observed during the early phase of COVID–19 are consistent with known effects of histamine release. Most likely, if famotidine reduces the severity for COVID-19, it acts via its antagonism or inverse agonism of histamine signaling and arrestin-biased activation [1]. Multiple retrospective studies, case series, or reports have since been performed seeking to clarify whether famotidine treatment improves clinical outcomes in outpatient or in newly admitted inpatient cohorts suffering from COVID-19 disease. In some retrospective analyses, significant benefit has been reported, while others conclude no benefit.
In this issue of Digestive Diseases and Sciences, Drs. Sun, Chen, and colleagues report the first rigorous metaanalysis of data abstracted from peer-reviewed and published retrospective studies available up to the time of analysis (October 2020) [2]. Their findings clearly establish that famotidine administration at the standard GERD treatment doses (20–40 mg/day) does not provide a significant benefit in reducing the risk of serious illness, death, and intubation for hospitalized COVID-19 patients. Although not available to Sun, Chen et al. at the time of their analysis, an independent retrospective study by the Janssen/Johnson & Johnson team of Drs. Shoaibi, Fortin et al. [3] has further confirmed and extended these findings.
Retrospective analyses of clinical datasets are one of the most powerful tools available to rapidly test whether drug repurposing “hits” have clinical merit. The retrospective analysis approach is straightforward, and the logic is compelling: If a repurposed candidate can be identified, and the pharmaceutical is prescribed at sufficient frequency (for another indication such as GERD) in patients suffering from a disease (such as COVID-19), then a retrospective analysis may be useful. As clinical patient data accumulate, sufficient cases exposed to both the repurposed drug candidate and the disease may support analysis of potential association. Nevertheless, this approach presumes that the dosing regimen (timing, route, and level) for the common indication (GERD) is within the therapeutic window required for the hypothesized new clinical indication (COVID-19). To illustrate, it is unrealistic and naïve to assume that the dosing regimen for an over-the-counter indication would be the same as for a life-threatening hyper-inflammatory response to a novel infectious pathogen since the dosing, pharmacokinetics, and pharmacodistribution recommended for the licensed indication may not align with that required for the repurposed clinical indication.
To avoid artifacts, retrospective propensity score analysis requires sufficient knowledge of confounding variables in order to support statistical correction and adjustment. For example, in the case of COVID-19 and patients with GERD, one might assume that patients receiving first-line therapy with proton pump inhibitors (PPI) and also suffering from COVID-19 might serve as a valid control population for patients receiving second-line GERD therapy (famotidine). Such assumptions may not withstand the test of time, as is the case with PPI [4, 5], which thereby introduced artifacts into at least one relevant retrospective analyses [6]. Therefore, the promise and potential value of retrospective analyses for evaluating repurposed drug candidates must be viewed with caution.
The story of how famotidine became a priority drug repurposing candidate for COVID-19 began with SARSCoV- 2 infection of a physician/scientist leading one of the computational docking teams focused on the papain-like protease of SARS-CoV-2. This occurred during a Cambridge Mass drug discovery conference immediately after the Biogen super-spreader event (late February 2020). Having developed COVID-19 disease, the investigator began self-administering famotidine, which the team had identified as a therapeutic PLpro inhibitor candidate. Famotidine provided almost immediate improvements in the symptoms of shortness of breath and lung “burning.” The investigator self-titrated to 60 mg oral administration three times daily, discontinued treatment after seven days, experienced renewed symptoms and then re-initiated treatment for an additional seven days. The investigator and team had been working closely with personnel employed by both the US DoD and HHS on identifying repurposed drug candidates for COVID-19 and reported the findings to US government officials within both agencies. The office of the US Health and Human Services (HHS) Assistant Secretary for Preparedness and Response (BARDA) elected to fund a clinical inpatient trial of famotidine as a potential COVID-19 therapeutic. Original plans to perform an intravenous dose ranging study in newly hospitalized patients were scrapped when the institutional review board insisted on including hydroxychloroquine in the treatment arms (NCT04370262). After enrollment was initiated, changes in standard of care, Good Clinical Practice (GCP) audit irregularities, and failure to enroll adequate numbers of patients compromised that study (now listed as completed); as a likely consequence, results have yet to be reported. Unfortunately, since other randomized clinical trials were postponed while awaiting the results of this HHS-funded study, a prospective randomized dose-ranging single agent study may never be performed.
A modest case series report from an affiliated outpatient study (NCT04389567) concluded that optimal symptomatic relief from COVID-19 required famotidine be administered at 60 mg PO three times a day, as had been initially observed. Higher dosage levels are also supported by detailed examination of the mechanism of action, pharmacology and pharmacokinetics of famotidine as a potential COVID-19 therapeutic [1].
At this time, neither adequately powered prospective randomized clinical trials nor retrospective studies have examined whether famotidine administered at 60 mg PO thrice daily or above provide clinical benefit, but this dosage level or above has nevertheless gained informal acceptance worldwide due to anecdotal positive clinical responses and practicing physician referrals.
Drs. Sun, Chen, and colleagues have established that the standard GERD famotidine dose of 20-40 mg PO per day does not provide clinical benefit for COVID-19 disease in hospitalized patients. Unresolved is whether higher famotidine dosage levels predicted to mitigate histamine H2-receptor-mediated effects during SARS-CoV-2 infection can provide clinical benefit in similar patient populations. Unfortunately, since virtually all leading research groups employing famotidine in treatment protocols have migrated to multi-agent strategies [7–9], the baseline efficacy and effectiveness of high-dose famotidine as a single agent for treatment of COVID-19 may never be known.
Reference
FORT BELVOIR, VA, UNITED STATES / Story by Darnell Gardner / Defense Threat Reduction Agency / Source : [HG00F3][GDrive]
See : DOMANE ( "Discovery of Medical Countermeasures Against Novel Entities" , created by the Defense Threat Reduction Agency in Dec of 2019 )
FORT BELVOIR, Va. - The COVID pandemic took the world by surprise. Researchers were left scrambling to devise a way to best mitigate the negative impact this disease has on global health. However, at the Defense Threat Reduction Agency (DTRA) it is common to operate in the “what if” space when it comes to potential biological threats. In fact, DTRA investments in technologies that detect, mitigate, or neutralize chemical and biological threats to the military and the nation date back more than 20 years.
“In late 2019, DTRA started a new program called Discovery of Medical Countermeasures Against Novel Entities ([DOMANE]) to address novel and emerging threats,” stated [Dr. David Michael Hone (born 1960)], Chief Scientist within the Vaccines and Therapeutics Division at DTRA. “Based on previous work, we decided DOMANE would not only focus on FDA-approved drugs but also combination therapeutics, as we believe that no single drug will be completely effective in treating new diseases. COVID-19 has provided us an opportunity to test our hypotheses using DOMANE."
DOMANE provides rapid decision-making capabilities to identify FDA-approved drugs that will most likely be effective therapeutics for COVID-19. Repurposing candidate drugs from a pool about 7,500 FDA-approved drugs to advance an effective COVID-19 therapeutic allows for a more rapid response in developing a therapeutic regimen. The end-result is a response that modifies COVID-19 in treated patients and promotes a speedy recovery.
Veklury®, which is more commonly referred to as Remdesivir, is a ribonuclease inhibitor developed by Gilead Sciences. It delivers broad-spectrum antiviral activity and has proven to be a modestly effective therapeutic for the treatment of COVID-19. Originally developed as an Ebola Zaire countermeasure, this DTRA-funded inhibitor transitioned for more advanced testing due to promising pre-clinical trials. Remdesivir inhibits viral replication in a wide variety of pathogens and was one of the first therapeutics identified in the Defense Department for repurposing to treat COVID-19. In the summer of 2020, Remdesivir received authorization for emergency use only in COVID-19 patients with continued FDA oversight.
To complement the modest therapeutic effect of Remdesivir, [DOMANE] also identified Famotidine, a COVID-19 disease modifier from Johnson & Johnson [See SARS-COV2 famotidine trials (2020)]; Pfizer’s Celecoxib, an anti-inflammatory product; and Merck’s Mectizan®, Ivermectin, an antiviral for clinical trials. To learn whether a combination of these FDA-approved drugs is more efficacious than current treatments, DTRA partnered with Quantum Leap Healthcare to conduct a clinical trial. This volunteer trial will evaluate drug combinations in COVID-19 patients who are having difficulty breathing.
DTRA also collaborated with Leidos to develop a new clinical trial prototype to evaluate new drug combinations in two clinical studies: one in COVID-19 patients who have symptoms but are still breathing without assistance and another in COVID-19 that are not displaying any symptoms.
“We believe that the evaluation of additional repurposed drugs in clinical trials will find a successful treatment option and will pave the road toward FDA-approval of a greatly improved therapeutic treatment for COVID-19 patients,” said [Dr. David Michael Hone (born 1960)].
DTRA is committed to supporting global health biosecurity efforts through continued vaccine and therapeutic discovery actions to treat COVID-19, as well as the next biological threat the nation faces.
Gazette staff / Aug 24, 2021 / JANESVILLE
With opinions and controversy swirling about masks, vaccinations and COVID-19, an infectious-disease expert will take questions from the public in a livestreamed meeting Wednesday afternoon.
The Rock County Public Health Department announced that Dr. Vijaya Somaraju of the Beloit Health System will take questions from 4 to 5 p.m.
Somaraju will give a brief presentation before taking questions from the audience.
A link to the Zoom meeting can be found on the coronavirus page at the Rock County Public Health Department website.
The session will also be live on the Rock County Public Health Department’s Facebook page, where viewers can ask questions in the comments section.
Those unable to attend may submit questions in advance and watch the recording on Facebook or YouTube afterward. Submit questions to COVID19 .Questions @co.rock.wi.us.
The presentation slides will also be available in Spanish, and an interpreter will be on the call for anyone who would like to ask questions in Spanish.
Somaraju has been practicing at Beloit Health System since June 2015. She is medical director of the system’s infectious-diseases department and is a board member of the county health department.
Somaraju was a clinical professor with extensive administrative, academic and clinical experience at the University of Illinois-Chicago campus in Peoria, Illinois, where she earned awards for outstanding teaching, according to the news release.
https://www.thevirusproject.org/beloit-protocol/
Hypothesis that celecoxib with HD famotidine as adjuvant therapy may reverse and prevent clinical deterioration in adult hospitalized COVID-19 patients.
BACKGROUND: Up to 80% of SARS-CoV-2 positive patients are asymptomatic and do not appear to progress to COVID-19. SARS-CoV-2 infection is not sufficient for development of COVID-19 disease; this may reflect differences in host inflammatory responses to infection.
A randomized trial of hospitalized COVID-19 cases has demonstrated that COX-2 protein antagonist celecoxib dampened systemic Prostaglandin E2 levels, prevented clinical deterioration, and was associated with rapid pulmonary CT chest improvement. High doses of famotidine, a histamine H2 receptor antagonist/inverse agonist reduces severity of COVID-19 symptoms.
We hypothesize that adjuvant therapy with a combination of celecoxib and high dose (HD) famotidine may improve COVID-19 outcomes.
At a single institution, consecutive case series of 30 COVID-19 hospitalized patients treated with celecoxib and HD famotidine as adjuvant therapy.
RESULTS: All 30 patients in the series survived hospitalized COVID-19 without mechanical ventilation or renal replacement therapy (RRT) and were discharged on room air within a median of 3 days (range 1-16 days). Statistically significant improvements from admission to discharge were observed for all aggregated outcome measures.
In this series, combined treatment with oral celecoxib and HD famotidine in an adjuvant setting was associated with 100% survival and improved radiographic outcomes, as well as statistically significant improvements in clinical, biomarker, and renal function measurements. The 9 patients with extremely high LDH (>365, Wuhan model prediction of 98% mortality) survived and were discharged on room air.
These results support that celecoxib treatment may mitigate the effects of direct viral transactivation of COX-2 expression in infected cells. HD famotidine acts to reduce cellular effects of local histamine via H2 receptor antagonism. Acute kidney injury was either prevented or mitigated by treatment; HD famotidine contributes to this effect.
In contrast to these findings, previously published COVID19 clinical intervention studies have not shown consistent laboratory or radiographic improvement.
2020-est-the-virus-project-org-beloit-protocol.pdf
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https://www.youtube.com/watch?v=uKzWwSRDMWw
DrVijayaSomaraju #COVID19 #hmtv
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Rock County Public Health Department
Dr. Somaraju, a physician from Beloit Health Systems who specializes in infectious diseases talks about COVID-19 and the COVID-19 vaccines. If you have a question for Dr. Somaraju or the Rock County Public Health Department you can email it to COVID19.Questions@co.rock.wi.us.