January 2021 – Christine Zhang is awarded the prestigious Scholar Award, American Society of Hematology


November 2020 – Hamza Celik wins the Abstract Achievement Award, American Society of Hematology

October 2020 – McDonnell Genome Institute (MGI) features Dr. Grant Challen and Christine Zhang's efforts in their collaborative research highlights

Article: Quantifying the Incidence of Clonal Hematopoiesis in Human Conditions of Increased Inflammation

March 2020 – IMPORTANT UPDATE – As of 03/19/2020, all non-essential Challen lab activities have been suspended in accordance with Washington University's efforts to slow the spread of SARS-CoV2

February 2020 – Challen Lab alum Ashley Kramer featured by Wayne State University for receiving a five-year, $294,102 F30 grant from the National Eye Institute of the National Institutes of Health last year to study the molecular mechanisms of retinal regeneration in zebrafish. Congrats Ashley!

Article: Anatomy of a grant: Ashley Kramer’s yearlong journey to finding her doctoral thesis


November 2019 – The lab is awarded an R01 from the NCI to study DNMT3A mutations in T-cell leukemia!

November 2019 – Challen Lab graduate student Beth Ostrander successfully defends her thesis! Congratulations Dr. Ostrander!

July 2019 - Hamza receives a one-year, $100,000 grant through LRF's Hollis Brownstein Research Grants Program! Congrats Hamza!

Article: Leukemia Research Foundation Funds 12 Blood Cancer Research Projects

April 2019 - Challen Lab is awarded an RO1 from the NHLBI to study the tumor suppressor mechanisms of JARID2 in chronic myeloid neoplasms!

April 2019 - Undergraduate student Anneliese Ceisel received the prestigious, NIH-funded, uSTAR fellowship which will fund her stay in Challen Lab for the next two years. Congrats Anneliese!

March 2019 - Congrats to Washington University undergraduate student Jacob Tao who has been awarded a prestigious fellowship from ALSF to support his stay in Challen Lab during the Summer 2019!


November 2018 - Hamza Celik has been awarded a pilot funding from American Cancer Society - IRG to develop a humanized animal model of myelofibrosis that could potentially be used as a pre-clinical drug screening platform.

August 2018 - After successfully completing her Ph.D. in April, Cates Mallaney accepts a Clinical Genome Director position with PieranDx! All the best to Cates in her future endeavors!

July 2018 – Hamza Celik is promoted to Instructor in Medicine.

June 2018 – Hamza Celik wins the Plenary Abstract Competition at the Hematopoietic Development and Malignancy (HDMP) retreat at Washington University. Congratulations Hamza and don’t spend the prize money all at once!

June 2018 – Congratulations to Dr. Grant Challen on his promotion to Associate Professor of Medicine with tenure!

Article: Board of Trustees grants faculty appointments, promotions

June 2018 – Hamza Celik is awarded a prestigious Young Investigator Award from the EvansMDS Foundation. Congratulations Hamza!

Hamza Celik: The Role of Jarid2 in Leukemic Transformation of Myelodysplastic Syndromes

May 2018 – Congratulations to Challen Lab graduate student Elizabeth “Laser Beth” Ostrander on being awarded an F31 from the NIH to further support her PhD studies!

May 2018 – Congratulation to Emily Haussler on winning the Harrison D. Stalker Award! The award is given to a graduating biology major whose undergraduate career combines outstanding scientific scholarship with significant contributions in the arts and humanities.

Article: Haussler wins Harrison D. Stalker Award

April 2018 – Cates Mallaney becomes the first graduate student from the Challen lab to defend her thesis; “Kdm6b is Required for Self-Renewal of Normal and Leukemic Mouse Stem Cells Under Proliferative Stress”. Congratulations Cates!


December 2017 – Hamza Celik wins the Abstract Achievement Award, American Society of Hematology, Atlanta.


July 2016 - Congratulations to Cates Mallaney for receiving an NIH F31 fellowship to fund her work on investigating the role of histone demethylase KDM6B in hematopoiesis. The award provides funding from July 2016-2019.

July 2016 - Congratulations to Hamza Celik on receiving the ASH Scholar Award! Hamza has received this award in his second year as post-doctoral researcher with the Challen Lab. He will be honored, along with the other recipients, at the 58th annual ASH conference in December of 2016. Check out Washington University's newsletter on Dr. Celik and the other two ASH award recipients from Washington University at the link below:

Article: Three hematologists named ASH Scholar Award recipients