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Brian G. Feagan

Western University · CA
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Area of research
Genetics · Epidemiology
Research interest
/Specialization Inflammatory Bowel Diseases (IBD) Clinical Trial Design and Management Dr. Brian Feagan is a gastroenterologist, with training in Clinical Epidemiology and Biostatistics. His research focus is the design, conduct and execution of large-scale randomized controlled trials (RCTs) in Crohn’s disease (CD) and ulcerative colitis (UC), and over the past 30 years, has been Principal Investigator in over 140 multi-center RCTs. His research has been devoted to the development, validation and optimization of outcome measures to assess the efficacy of novel therapeutics in CD and UC. Dr. Feagan is Professor of Medicine at the Schulich School of Medicine & Dentistry, a gastroenterologist at London Health Sciences Centre and Senior Scientific Director of Alimentiv Inc (formerly Robarts C
h-index
136
citations
90,386
works
1,261
NIH funding
primary concept
Medicine
email

Recent publications

Association between endo-histological outcomes and colonic mucosal transcriptomic profiles in patients with ulcerative colitis receiving filgotinib.
2026cited by 0position: contributordoi
Safety and efficacy of the anti-TL1A monoclonal antibody tulisokibart for Crohn's disease: a phase 2a induction trial
˜The œLancet. Gastroenterology & hepatology 2025cited by 22position: firstdoi
Development and validation of a novel Endoscopic ulcer Activity Score for Evaluation of Crohn's Disease (EASE-CD) using data from two randomised controlled trials
˜The œLancet. Gastroenterology & hepatology 2025cited by 6position: middledoi
Recommendations to Standardize the Conduct of Clinical Trials Evaluating Novel Therapies for Perianal Fistulizing Crohn’s Disease
Clinical Gastroenterology and Hepatology 2025cited by 4position: middledoi
Reliability and Responsiveness of Clinical and Endoscopic Outcome Measures in Crohn's Disease.
2025cited by 2position: contributordoi
Pharmacokinetic Comparability and Safety Between Original and Citrate-Free Mirikizumab Formulations for Subcutaneous Injections: Results from Three Clinical Trials.
2025cited by 2position: contributordoi
Therapeutic Drug Monitoring for Dose Optimization of Infliximab in Patients With Inflammatory Bowel Disease: An Analysis of Canadian Real-World Data.
2025cited by 2position: contributordoi
Certolizumab Pegol Treatment in Patients With Crohn's Disease: Final Safety Data From the SECURE Registry.
2025cited by 0position: contributordoi
Crohn Disease Strictures: Multimodality Imaging to Identify Imaging Biomarkers.
2025cited by 0position: contributordoi
Factors associated with response to filgotinib and the prognostic power of faecal calprotectin for ulcerative colitis in the phase 2b/3 SELECTION trial.
2025cited by 0position: contributordoi
Guselkumab in patients with moderately to severely active ulcerative colitis (QUASAR): phase 3 double-blind, randomised, placebo-controlled induction and maintenance studies
The Lancet 2024cited by 75position: middledoi
A global consensus on the definitions, diagnosis and management of fibrostenosing small bowel Crohn’s disease in clinical practice
Nature Reviews Gastroenterology & Hepatology 2024cited by 62position: middledoi
Safety of Ustekinumab in Inflammatory Bowel Disease: Pooled Safety Analysis Through 5 Years in Crohn’s Disease and 4 Years in Ulcerative Colitis
Journal of Crohn s and Colitis 2024cited by 38position: middledoi
Efficacy and Safety of Etrasimod in Patients with Moderately to Severely Active Isolated Proctitis: Results From the Phase 3 ELEVATE UC Clinical Programme
Journal of Crohn s and Colitis 2024cited by 35position: middledoi
Determining the optimal treatment target in patients with ulcerative colitis: rationale, design, protocol and interim analysis for the randomised controlled VERDICT trial
BMJ Open Gastroenterology 2024cited by 34position: lastdoi
Reliability of MR Enterography Features for Describing Fibrostenosing Crohn Disease.
2024cited by 17position: contributordoi
Reliability of CT Enterography for Describing Fibrostenosing Crohn Disease.
2024cited by 16position: contributordoi
Placebo Rates in Crohn’s Disease Randomized Clinical Trials: An Individual Patient Data Meta-Analysis
Gastroenterology 2024cited by 13position: middledoi
Diagnosis of Inflammatory Bowel Disease–Associated Peripheral Arthritis: A Systematic Review
Inflammatory Bowel Diseases 2024cited by 8position: middledoi
Combination Therapy With Guselkumab and Golimumab in Patients With Moderately to Severely Active Ulcerative Colitis: Pharmacokinetics, Immunogenicity and Drug-Drug Interactions.
2024cited by 5position: contributordoi
Serum Extracellular Matrix Molecules and Their Fragments as Biomarkers of Inflammation and Fibrosis in Inflammatory Bowel Diseases: A Systematic Review.
2024cited by 4position: contributordoi
Risankizumab Is Associated With Normalization of Biomarkers in Patients With Crohn’s Disease: Results From the Phase 3 ADVANCE, MOTIVATE, and FORTIFY Studies
Journal of Crohn s and Colitis 2024cited by 4position: middledoi
Etrasimod as induction and maintenance therapy for ulcerative colitis (ELEVATE): two randomised, double-blind, placebo-controlled, phase 3 studies
The Lancet 2023cited by 325position: lastdoi
Guselkumab plus golimumab combination therapy versus guselkumab or golimumab monotherapy in patients with ulcerative colitis (VEGA): a randomised, double-blind, controlled, phase 2, proof-of-concept trial
˜The œLancet. Gastroenterology & hepatology 2023cited by 219position: firstdoi
IL-12 and IL-23 pathway inhibition in inflammatory bowel disease
Nature Reviews Gastroenterology & Hepatology 2023cited by 217position: middledoi
Gut Microbiome Composition Is Associated With Future Onset of Crohn’s Disease in Healthy First-Degree Relatives
Gastroenterology 2023cited by 186position: middledoi
Vedolizumab for the Treatment of Chronic Pouchitis
New England Journal of Medicine 2023cited by 108position: middledoi
Guselkumab in Patients With Moderately to Severely Active Ulcerative Colitis: QUASAR Phase 2b Induction Study
Gastroenterology 2023cited by 90position: middledoi
Anti-Integrin αvβ6 Autoantibodies Are a Novel Biomarker That Antedate Ulcerative Colitis
Gastroenterology 2023cited by 86position: middledoi
Vedolizumab, Adalimumab, and Methotrexate Combination Therapy in Crohn’s Disease (EXPLORER)
Clinical Gastroenterology and Hepatology 2023cited by 86position: middledoi

Grants

No grants ingested yet.

Frequent collaborators

William J. Sandborn · Mirati Therapeutics (United States)125 papers (2012–2024)Geert D’Haens · Vrije Universiteit Amsterdam61 papers (2012–2025) · 38 papers (2019–2026)Bruce E. Sands · Seattle University38 papers (2012–2025)Silvio Danese · Io Therapeutics (United States)35 papers (2012–2025)Séverine Vermeire · Europe Hospitals32 papers (2013–2024)Jean‐Frédéric Colombel · Cornell University28 papers (2012–2023)Guangyong Zou · Western University27 papers (2013–2025)Remo Panaccione · Nutrition-Génétique et Exposition aux Risques Environnementaux27 papers (2012–2025)Barrett G. Levesque · Gilead Sciences (United States)26 papers (2013–2018)Julián Panés · Instituto de Salud Carlos III24 papers (2012–2025)Paul Rutgeerts · KU Leuven22 papers (2012–2019)Vipul Jairath · McMaster University22 papers (2015–2025)Laurent Peyrin‐Biroulet · Hôpital Lapeyronie22 papers (2012–2026)Vipul Jairath · Western University19 papers (2015–2025) · 19 papers (2013–2025)Vipul Jairath · Medical Research Council18 papers (2019–2025)Stephen B. Hanauer · Northwestern University18 papers (2012–2021)Christopher Ma · University College London17 papers (2017–2025)David T. Rubin · University of California System16 papers (2015–2025)
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