Program

2026 International Gastrointestinal Electrophysiology Society (iGES) Annual Meeting 

6:00 - 9:30 pm, Monday, May 4, 2026 

Courtyard Chicago Downtown Magnificent Mile, 165 E Ontario St, Chicago, IL 60611  

 Kindly sponsored by: 

Enterra Medical Inc.

Overview

18:00 – 18:30 Registration and Dinner

18:30 – 18:45 Dinner and Awards Announcements* (Alvarez, Stern, McCallum awards)

18:45 – 20:00 Session 1: Gastrointestinal electrophysiology and control (Abstracts A1-A8)

20:00 – 20:15 Short break

20:15 – 21:05 Session 2: Neuromodulation (Abstracts B1-B6)

*Award winners will be announced at the iGES meeting.

Session 1: Gastrointestinal electrophysiology and control (Abstracts A1-A8)

A1. Autoimmune, inflammatory, autonomic, and enteric measurements in patients with symptoms of gastroparesis. 

A. Gollamudi, P. Mathur, A. Stocker, M. Cave, H. Tiwari, M. W. Daniels, T.L. Abell (*presented by H. Tiwari)

University of Louisville, Louisville, KY, USA

A2. Identifying how mucosal EGG metrics correlate with response to botulinum toxin in patients with abnormal pyloric flip. 

B. Busch, P. Mathur, B.D. Rogers, E. Omer, A. Stocker, N. Liu, H.Tiwari, M.W. Daniels, T.L. Abell

University of Louisville, Louisville, KY, USA

A3. Sedative dose affects human gastric slow-wave amplitude measured by endoscopic gastric mapping.

P.J. Tremain (1), J.M. Dowrick (1), C-HA. Chan (1), D. Rowbotham (2), G. Lim (3), G. O’Grady (1,4), L.K. Cheng (1), J. McKeage (1), T.R. Angeli-Gordon (1,5)

1. Auckland Bioengineering Institute, University of Auckland, New Zealand 

2. Department of Gastroenterology and Hepatology, Auckland City Hospital, New Zealand

3. Department of Gastroenterology and Hepatology, Christchurch Hospital, New Zealand

4. Department of Surgery, University of Auckland, New Zealand

5. Te Manawahoukura Research Centre, Te Wānanga o Aotearoa, New Zealand

A4. Sympathetic celiac ganglion signaling mediates gastric distention-induced pain and modulates gastric accommodation and glucose homeostasis.

Huang Pengyu, Md Jahangir Alam, and Jiande DZ Chen
Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA

A5. The Auckland classification version 1.0 for body surface gastric mapping in gastroduodenal disorders: Derivation and application.

C Varghese (1,2), N Dachs (3), D Foong (3), G Schamberg (3), M Law (1,3), S Calder (1), T Abell (4), H Parkman (5), A Gharibans (1,3), C Andrews (3,6), G O’Grady (1,3) on behalf of the International Body Surface Gastric Mapping Working Group.

1. Department of Surgery, University of Auckland, Auckland, New Zealand

2. Department of Surgery, Mayo Clinic, Rochester, MN, USA

3. Alimetry Ltd, Auckland, New Zealand

4. University of Louisville, Louisville, Kentucky, USA

5. Temple University, Philadelphia, PN, USA

6. University of Calgary, Alberta, Canada

A6. Sacral nerve stimulation alleviates visceral hypersensitivity via the α7nachr-mediated cholinergic anti-inflammatory pathway. 

Fei Li, Pengyu Huang, Wenxuan Ma, Md Jahangir Alam, Shiying Li, Ya Jiang and Jiande DZ Chen

Division of Gastroenterology, School of Medicine, University of Michigan, Ann Arbor, MI, USA

A7. Heart Rate Variability-Derived Autonomic.

M. Khawar Ali, Jiande DZ Chen

Department of Internal Medicine, University of Michigan

A8. Dorsal motor nucleus of the vagus shapes nutrient-dependent modulation of gastric and duodenal slow waves in rats.

Md Jahangir Alam, Fei Li, Jiande DZ Chen

Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA 

Session 2: Neuromodulation (Abstracts B1-B6)

B1. Optical Mapping of Slow Wave Initiation during Gastric Pacing.

Hanyu Zhang (1), Haley N. Patton (1), Nipuni D. Nagahawatte (2), Bijay Guragain (1), Leo K. Cheng (2), Gregory P. Walcott (3) Jack M. Rogers (1).

1. Department of Biomedical Engineering, School of Medicine and School of Engineering, University of Alabama at Birmingham, Birmingham, Alabama, USA

2. Auckland Bioengineering Institute, University of Auckland, New Zealand

3. Department of Medicine/Cardiovascular Diseases, University of Alabama at Birmingham, Birmingham, Alabama, USA

B2. Temporary and permanent gastric electrical stimulation correlates with improvements in health-related quality of life. 

P. Mathur, A. Untaroiu, A. Stocker, H. Tiwari, M.W. Daniels, T.L. Abell

University of Louisville, Louisville, KY, USA

B3. Personalized therapies for drug refractory patients with gastroparesis symptoms reveals specific phenotypes.

R. Basham, M. Helou, G. Chhabra, B. Busch, P. Mathur, A. Stocker, E. Omer, B.D. Rogers, N. Liu, D.N. Liu, M.W. Daniels, T.L. Abell

University of Louisville, Louisville, KY, USA (presented by H. Tiwari)

B4. Body surface gastric mapping in the evaluation of gastric electrical stimulation therapy: Initial results. 

S Simmonds (1), P Mathur (2), N Tragash (2), L Naing (2), S Gibbs (2), A Goad (2), M W Daniels (4), H Tiwari (2), A Stocker (2), C Varghese (1,3), HP Parkman (5), S Calder (1,3), G O'Grady (1,3,6), TL Abell (2).

1. Alimetry Ltd, Auckland, New Zealand

2. Digestive and Liver Health, University of Louisville, KY, USA

3. Department of Surgery, University of Auckland, New Zealand

4. Bioinformatics and Biostatistics, University of Louisville, KY, USA

5. Section of Gastroenterology, Temple University, Philadelphia, PA, USA

6. Auckland Bioengineering Institute, University of Auckland, New Zealand

B5. Medium energy gastric electrical stimulation can improve abdominal pain in a subset of patients with the symptoms of gastroparesis.

E. Steele (1), H. Tiwari (1), P. Tirumanisetty (1), W. Cai (1), S. Naik (1), A. Stocker (1), L. McElmurray (1), K. Cooper (1), J. Chen (2), M Daniels, T.L. Abell (1)

1. University of Louisville, Louisville, KY

2. University of Michigan, Ann Arbor, MI

B6. Electrical Acustimulation at Acupoint ST36 Enhances Rectal Sensitivity in Constipated Rats by Suppressing Low-grade Information and Improving Serotonin Function.

Ya Jiang, Fei Li, Wenxuan Ma, Wanqun Chen, Shiying Li, Jiande DZ Chen

Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA