Faculty profile

Allan Okrainec

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ProfessorDepartment of SurgeryUniversity of Toronto

Allan Okrainec

Professor

Department of Surgery

Temerty Faculty of Medicine

University of Toronto

Toronto, Ontario, Canada

Supervision signals

Professors usually supervise graduate students in their department's programs.
29 publications in the last five years, latest in 2026.
Senior (last) author on 3 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

109

Publications

3,286

Citations

285

Collaborators

Grants

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

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Signals and details

Research

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

Latest papers

Development of an artificial intelligence based virtual tool for measuring distances during image-guided surgery.
Surgical endoscopy · 2026
IFSO Survey: Use of Large Language Models (LLMs) by Metabolic Bariatric Surgeons and Integrated Health Professionals.
Obesity surgery · 2026
Characterization of liver, adipose, and fecal microbiome in obese patients with MASLD: links with disease severity and metabolic dysfunction parameters
Microbiome · 2025

All 109 publications

Latest funding

At-home Breast Oncology care Delivered with E-Health solutions - The ABODE Study
CIHR · 2021 · Co-investigator
Telephone-Based Cognitive Behavioural Therapy for Post-Operative Bariatric Surgery Patients: A Randomized Controlled Trial
CIHR · 2016 · Co-investigator
$489,600
Rapid Prototyping of Patient Specific Models, Dextrous Tools and Implants
CFI · 2015 · Co-investigator
$712,850

All 7 grants and awards

109 publications.

Development of an artificial intelligence based virtual tool for measuring distances during image-guided surgery.

Kwok R, Yoshida T, Hunter J, Laplante S, Brudno M, Fecso A, Okrainec A, Madani A

Surgical endoscopy20262 citations

DOI: 10.1007/s00464-025-12461-2 PMID: 41366573

IFSO Survey: Use of Large Language Models (LLMs) by Metabolic Bariatric Surgeons and Integrated Health Professionals.

Kermansaravi M, Pantelis A, Torensma B, Shahabi S, Mazzarella M, D'Arco S, Lee Y, Okrainec A, Leite S, Shin TH, Cohen RV

Obesity surgery2026

DOI: 10.1007/s11695-026-08578-5 PMID: 41838364

Characterization of liver, adipose, and fecal microbiome in obese patients with MASLD: links with disease severity and metabolic dysfunction parameters

Katherine J. P. Schwenger, Julia K. Copeland, Yasaman Ghorbani, Lina Chen, Elena M. Comelli, David S. Guttman, Sandra Elisabeth Fischer, Timothy D. Jackson, Allan Okrainec, Johane P. Allard

Microbiome202516 citationsOpen Access

DOI: 10.1186/s40168-024-02004-7 PMID: 39810228

Validity of the Diabetic Wound Assessment Learning Tool.

Selim O, Dueck AD, Kulasegaram KM, Brydges R, Walsh CM, Okrainec A

The clinical teacher20251 citationsSenior authorOpen Access

DOI: 10.1111/tct.70025 PMID: 39805632

Links between fecal microplastics and parameters related to metabolic dysfunction-associated steatotic liver disease (MASLD) in humans: An exploratory study

Katherine J. P. Schwenger, Yasaman Ghorbani, Sharvika Bharatselvam, Lina Chen, Kristina M. Chomiak, Anna Christina Tyler, Nathan C. Eddingsaas, Sandra Elisabeth Fischer, Timothy D. Jackson, Allan Okrainec, Johane P. Allard

The Science of The Total Environment202430 citationsOpen Access

DOI: 10.1016/j.scitotenv.2024.176153 PMID: 39260480

Links between gut microbiome, metabolome, clinical variables and non-alcoholic fatty liver disease severity in bariatric patients.

Schwenger KJP, Sharma D, Ghorbani Y, Xu W, Lou W, Comelli EM, Fischer SE, Jackson TD, Okrainec A, Allard JP

Liver international : official journal of the International Association for the Study of the Liver202419 citationsOpen Access

DOI: 10.1111/liv.15864 PMID: 38353022

Usability, Ergonomics, and Educational Value of a Novel Telestration Tool for Surgical Coaching: Usability Study.

Kiani P, Dolling-Boreham R, Hameed MS, Masino C, Fecso A, Okrainec A, Madani A

JMIR human factors20248 citationsOpen Access

DOI: 10.2196/57243 PMID: 39255487

Assessment of guidelines for bariatric and metabolic surgery: a systematic review and evaluation using appraisal of guidelines for research and evaluation II (AGREE II)

Lee Y, Hircock C, Dang J, Jung J, Zevin B, Elnahas A, Khamar J, Vergis A, Tahir U, Hardy K

International Journal of Obesity20243 citations

DOI: 10.1038/s41366-024-01559-7

Assessing clinical and metabolic responses related to hyperlipidemia, MASLD and type 2 diabetes: sleeve versus RYGB

Sharvika Bharatselvam, Katherine J. P. Schwenger, Yasaman Ghorbani, Sandra Elisabeth Fischer, Timothy D. Jackson, Allan Okrainec, Johane P. Allard

Nutrition20243 citations

DOI: 10.1016/j.nut.2024.112530 PMID: 39111098

Educational value of a novel telestration device for surgical coaching—a randomized controlled trial

M. Hameed, Parmiss Kiani, Priyanka Kugamoorthy, Caterina Masino, Nastasia Kujbid, Simon J. Laplante, Allan Okrainec, Amin Madani, András Botond Fecső

Surgical Endoscopy20243 citations

DOI: 10.1007/s00464-024-10972-y PMID: 38913120

At-home Breast Oncology care Delivered with E-Health solutions - The ABODE Study

Co-investigatorCIHR2021Project Grant - PA: CMA Foundation - Virtual Care

Principal investigators: Cil, Tulin D

Keywords: Breast Cancer; Mhealth; Patient Reported Outcome Measures; Psychosocial Impact; Virtual Care

Telephone-Based Cognitive Behavioural Therapy for Post-Operative Bariatric Surgery Patients: A Randomized Controlled Trial

Co-investigatorCIHR2016Project Grant

Principal investigators: Sockalingam, Sanjeev; Cassin, Stephanie E

Keywords: Bariatric Surgery; Cognitive Behavioural Therapy; Disordered Eating; Obesity; Psychosocial Functioning; Psychosocial Intervention; Tele-Therapy; Weight Loss

$489,600

Rapid Prototyping of Patient Specific Models, Dextrous Tools and Implants

Co-investigatorCFI2015Innovation Fund: Innovation Fund 2015

Principal investigators: Drake, James

Keywords: Image segmentation, medical devices, surgical robotics 3D printer, laser cutting, robotics

$712,850

Development of a Decision Rule for Discharging Patients following Colorectal Surgery based on Post-operative Serum C Reactive Protein and/or Procalcitonin Levels

Co-investigatorCIHR2014Operating Grant

Principal investigators: Mcleod, Robin S

Keywords: Complications; Decision Rule; Gastrointestinal; Surgery

$358,402

Exploiting the therapeutic effects of the fecal microbiome in bariatric care

Co-investigatorCIHR2014Team Grant: Bariatric Care - Mechanisms underlying bariatric procedures

Principal investigators: Allard, Johane P; Gaisano, Herbert Y

Keywords: Bariatric Surgery; Fecal Microbiota Transplant; Intestinal Microbiome; Metagenome

$1,375,000

Role of intestinal microbiota in non-alcoholic fatty liver disease pre and post bariatric surgery

Co-investigatorCIHR2012Operating Grant

Principal investigators: Allard, Johane P

Keywords: Bariatric Surgery; Diet; Inflammation; Lipopolysaccharide; Microbiota; Non-Alcoholic Fatty Liver Disease; Steatohepatitis

$522,167

Knowledge translation of surgical innovations: Exploring development, implementation and evaluation of robotic and simulation training programs

Co-investigatorCIHR2009Operating Grant - Priority Announcement: Knowledge Translation

Principal investigators: Gagliardi, Anna R; Williams, David

Keywords: Interviews; Network Development; Patient Safety; Surgical Robotics; Surgical Simulation; Systematic Review

$60,000

From public funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998 with their latest competition results, the Canada Foundation for Innovation, Genome Canada, the Canadian Space Agency, Canada Research Chairs, the Fonds de recherche du Québec, Ontario research funding, Michael Smith Health Research BC, the Canadian Cancer Society, Heart & Stroke and Brain Canada.

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

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Allan Okrainec

Research

Latest papers

Latest funding

Development of an artificial intelligence based virtual tool for measuring distances during image-guided surgery.

IFSO Survey: Use of Large Language Models (LLMs) by Metabolic Bariatric Surgeons and Integrated Health Professionals.

Characterization of liver, adipose, and fecal microbiome in obese patients with MASLD: links with disease severity and metabolic dysfunction parameters

Validity of the Diabetic Wound Assessment Learning Tool.

Links between fecal microplastics and parameters related to metabolic dysfunction-associated steatotic liver disease (MASLD) in humans: An exploratory study

Links between gut microbiome, metabolome, clinical variables and non-alcoholic fatty liver disease severity in bariatric patients.

Usability, Ergonomics, and Educational Value of a Novel Telestration Tool for Surgical Coaching: Usability Study.

Assessment of guidelines for bariatric and metabolic surgery: a systematic review and evaluation using appraisal of guidelines for research and evaluation II (AGREE II)

Assessing clinical and metabolic responses related to hyperlipidemia, MASLD and type 2 diabetes: sleeve versus RYGB

Educational value of a novel telestration device for surgical coaching—a randomized controlled trial

At-home Breast Oncology care Delivered with E-Health solutions - The ABODE Study

Telephone-Based Cognitive Behavioural Therapy for Post-Operative Bariatric Surgery Patients: A Randomized Controlled Trial

Rapid Prototyping of Patient Specific Models, Dextrous Tools and Implants

Development of a Decision Rule for Discharging Patients following Colorectal Surgery based on Post-operative Serum C Reactive Protein and/or Procalcitonin Levels

Exploiting the therapeutic effects of the fecal microbiome in bariatric care

Role of intestinal microbiota in non-alcoholic fatty liver disease pre and post bariatric surgery

Knowledge translation of surgical innovations: Exploring development, implementation and evaluation of robotic and simulation training programs

Frequent collaborators

Timothy Jackson

Johane Allard

Sanjeev Sockalingam

Ahmad Elnahas

David Urbach

Fayez Quereshy

Robin Mcleod

Mary-Anne Aarts

Raed Hawa

Andras Fecso

Amin Madani

Janice Victor

Joseph Victor

Wendy Lou

Walter Tavares

Dhruvin Hirpara

Susan Wnuk

Ivan Silver

Eran Shlomovitz

David Wiljer

Herbert Gaisano

Stuart McCluskey

Ashlie Nadler

Richard Brull

Carol-Anne Moulton

Lakshmikumar Raghavan

Beverly Morningstar

David Goldstein

Kartik Jhaveri

Ur Metser

Jonathan Wasserman

Amy Glicksman

Helen MacRae

Rajni Patel

Melinda Maggisano