Faculty profile

Leo Dieleman

Back to faculty

ProfessorMedicine DeptUniversity of Alberta

Leo Dieleman

Professor

Medicine Dept

Faculty of Medicine & Dentistry

University of Alberta

Edmonton, Alberta, Canada

Supervision signals

Professors usually supervise graduate students in their department's programs.
64 publications in the last five years, latest in 2026.
Senior (last) author on 6 recent papers, a sign of leading a research group.

These signals come from public records, including federal and provincial funding decisions. Ask the professor or the graduate program whether they are taking new students.

Academic metrics

352

Publications

15,066

Citations

121

Collaborators

Publications by year

Counts cover the publications linked to this profile. Citations and the h-index appear when the source records them.

Profiles and links

University Profile

Search on Google Scholar

Search on ResearchGate

iDORCID OpenAlex

Find them onX · LinkedIn · Bluesky · YouTube

Signals and details

Research

Read how they describe their research on their University of Alberta profile.

Latest papers

Serum IgG Response to a Conserved Domain of Commensal Flagellins Predicts Future Risk of Crohn’s Disease in First-Degree Relatives
Clinical Gastroenterology and Hepatology · 2026
Symptoms in Persons With Either Active or Inactive Crohn‘s Disease Are Agnostic to Disease Phenotype
Journal of Clinical Gastroenterology · 2026
Pre-Crohn’s Disease Stool From Discordant Siblings Promotes the Development of Colitis in Germ-Free Mice
Gastroenterology · 2026

All 352 publications

From the 150 most recent of 352 publications.

Serum IgG Response to a Conserved Domain of Commensal Flagellins Predicts Future Risk of Crohn’s Disease in First-Degree Relatives

Wu RY, Xue M, Zhao Q, Jeong S, Griffiths AM, Dieleman LA, Steinhart AH, Aumais G, Bressler B, Panaccione R

Clinical Gastroenterology and Hepatology20263 citations

DOI: 10.1016/j.cgh.2025.12.006

Symptoms in Persons With Either Active or Inactive Crohn‘s Disease Are Agnostic to Disease Phenotype

Bernstein CN, Nugent Z, Panaccione R, Marshall DA, Kaplan GG, Dieleman LA, Vanner S, Graff LA, Otley A, Jones J

Journal of Clinical Gastroenterology20262 citations

DOI: 10.1097/mcg.0000000000002137

Pre-Crohn’s Disease Stool From Discordant Siblings Promotes the Development of Colitis in Germ-Free Mice

Dang CP, Chen-Liaw A, Xue M, Luchak A, Mu K, Li Q, Ren MY, Lee S-H, Moayyedi P, Griffiths AM

Gastroenterology20261 citations

DOI: 10.1053/j.gastro.2026.03.023

Comparing the accuracy of computed tomography enterography to balloon-assisted enteroscopy in the evaluation of small bowel Crohn's disease.

Cooper J, MacKay S, Reeson M, Dieleman LA, Oguro K, Dang TN, Kroeker KI, Wasilenko S, Gozdzik M, Baumgart DC, Hoentjen F, Wong K, Peerani F, Wiebe E, Zepeda-Gomez S, Halloran B

Journal of the Canadian Association of Gastroenterology2026Open Access

DOI: 10.1093/jcag/gwaf029 PMID: 41669715

Healthy First-Degree Relatives From Multiplex Families vs Simplex Families Have Higher Subclinical Intestinal Inflammation, a Distinct Fecal Microbial Signature, and Harbor a Higher Risk of Developing Crohn’s Disease

Olivera PA, Martinez-Lozano H, Leibovitzh H, Xue M, Neustaeter A, Espin-Garcia O, Xu W, Madsen KL, Guttman DS, Bernstein CN

Gastroenterology202526 citationsOpen Access

DOI: 10.1053/j.gastro.2024.08.031

Crohn’s Disease Phenotypes and Associations With Comorbidities, Surgery Risk, Medications and Nonmedication Approaches: The MAGIC in IMAGINE Study

Bernstein CN, Panaccione R, Nugent Z, Marshall DA, Kaplan GG, Vanner S, Dieleman LA, Graff LA, Otley A, Jones J

Inflammatory Bowel Diseases202510 citationsOpen Access

DOI: 10.1093/ibd/izae055

Relating the molecular phenotype of ulcerative colitis to the clinical course.

Madill-Thomsen KS, Venner JM, Parsons DE, Famulski KS, Thiesen AL, Hoque S, Kroeker KI, Wong K, Peerani F, Dieleman LA, Hoentjen F, Baumgart DC, Halloran PF, Halloran BP

Scientific reports20256 citationsOpen Access

DOI: 10.1038/s41598-025-90618-8 PMID: 40064933

Long-Term Effectiveness and Safety of Ustekinumab Dose Escalation in Patients with Moderate-to-Severe Ulcerative Colitis: A Multicenter Retrospective Cohort Study.

van Lierop LMA, Albino L, Rosentreter R, Thomas PWA, Lu C, Siffledeen J, Kroeker KI, Ma C, Peerani F, Halloran BP, Baumgart DC, Dieleman LA, Du L, Hoentjen F, Wong K

Digestive diseases and sciences20254 citations

DOI: 10.1007/s10620-025-08977-1 PMID: 40091002

A framework for clinical care pathway renewal: an example from inflammatory bowel disease

Kaitlyn Delaney Chappell, Lily Olayinka, Reed Taylor Sutton, Cynthia H. Seow, Jennifer C. C. deBruyn, Sander van Zanten, Christopher Ma, Brendan P. Halloran, Levinus Albert Dieleman, Kai On Wong, Remo Panaccione, Karen Ivy Kroeker

BMC Medical Research Methodology20252 citationsOpen Access

DOI: 10.1186/s12874-025-02616-z PMID: 40634845

Development of a patient/proxy-reported instrument for pediatric antibiotic-associated diarrhea.

Ardestani SK, Robinson JL, Jou H, Dieleman LA, Huynh HQ, Vohra S

PloS one20252 citationsOpen Access

DOI: 10.1371/journal.pone.0325436 PMID: 40465685

Profile data last refreshed on September 29, 2026 from the university directory, publication records and public research funding records.

Something wrong or missing on this profile? Suggest a correction

Leo Dieleman

Research

Latest papers

Serum IgG Response to a Conserved Domain of Commensal Flagellins Predicts Future Risk of Crohn’s Disease in First-Degree Relatives

Symptoms in Persons With Either Active or Inactive Crohn‘s Disease Are Agnostic to Disease Phenotype

Pre-Crohn’s Disease Stool From Discordant Siblings Promotes the Development of Colitis in Germ-Free Mice

Comparing the accuracy of computed tomography enterography to balloon-assisted enteroscopy in the evaluation of small bowel Crohn's disease.

Healthy First-Degree Relatives From Multiplex Families vs Simplex Families Have Higher Subclinical Intestinal Inflammation, a Distinct Fecal Microbial Signature, and Harbor a Higher Risk of Developing Crohn’s Disease

Crohn’s Disease Phenotypes and Associations With Comorbidities, Surgery Risk, Medications and Nonmedication Approaches: The MAGIC in IMAGINE Study

Relating the molecular phenotype of ulcerative colitis to the clinical course.

Long-Term Effectiveness and Safety of Ustekinumab Dose Escalation in Patients with Moderate-to-Severe Ulcerative Colitis: A Multicenter Retrospective Cohort Study.

A framework for clinical care pathway renewal: an example from inflammatory bowel disease

Development of a patient/proxy-reported instrument for pediatric antibiotic-associated diarrhea.

Frequent collaborators

Levinus Dieleman

Karen Kroeker

Richard Fedorak

Karen Wong

Remo Panaccione

Farhad Peerani

Gilaad Kaplan

Christopher Ma

Eytan Wine

Paul Moayyedi

Kenneth Croitoru

Karen Madsen

Ken Croitoru

Alain Bitton

Charles Bernstein

Heather Armstrong

Michael Gänzle

Paul Beck

John Marshall

Kevan Jacobson

Herman Barkema

Cynthia Seow

Brendan Halloran

Gane Wong

Williams Turpin

Frank Hoentjen

Vivian Huang

Sun-Ho Lee

Parul Tandon

Hien Huynh

Sacha Sidani

Michal Gozdzik

Hsing Jou

Ellina Lytvyak

Sergio Zepeda-Gomez

Rshmi Khurana

Cynthia Maxwell

Nafiseh Ghobakhloo