Faculty profile
Grégoire Le Gal
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Read how they describe their research on their University of Ottawa profile.
Latest papers
Bleeding Risk with Apixaban vs. Rivaroxaban in Acute Venous Thromboembolism
New England Journal of Medicine · 2026
Diagnostic strategies in postpartum individuals with suspected venous thromboembolism: A scoping review.
Thrombosis research · 2024
Protocol for a modelling study to assess the clinical and cost-effectiveness of indefinite anticoagulant therapy for first unprovoked venous thromboembolism.
BMJ open · 2023
Latest funding
- $485,774
Clonal Hematopoiesis in Venous Thromboembolism: Advancing Precision in Risk Prediction and Treatment Outcomes
CIHR · 2026 · Co-investigator
- $4,563,225
The PARTUM (Postpartum Aspirin to Reduce Thromboembolism Undue Morbidity) Trial
CIHR · 2025 · Co-investigator
- $1,472,624
Deep Vein Thrombosis Testing in the Emergency Department (the DVTest study)
CIHR · 2025 · Co-investigator
46 publications.
Bleeding Risk with Apixaban vs. Rivaroxaban in Acute Venous Thromboembolism
Castellucci LA, Chen VM, Kovacs MJ, Lazo-Langner A, Greenstreet P, Kahn S, Côté B, Schulman S, de Wit K, Douketis J
Diagnostic strategies in postpartum individuals with suspected venous thromboembolism: A scoping review.
Bhangu G, Murray A, Qayyum A, Goumeniouk N, Goodacre S, Hunt BJ, Touhami O, Tester J, Rees M, Hammerschlag G, Pascoe D, Ronksley PE, King JA, Choi H, McDermott S, Le Gal G, Skeith L
Protocol for a modelling study to assess the clinical and cost-effectiveness of indefinite anticoagulant therapy for first unprovoked venous thromboembolism.
Khan F, Thavorn K, Coyle D, van Katwyk S, Tritschler T, Hutton B, Le Gal G, Rodger M, Fergusson D
Ruling out pulmonary embolism across different healthcare settings: A systematic review and individual patient data meta-analysis
Geersing G-J, Takada T, Klok FA, Büller HR, Courtney DM, Freund Y, Galipienzo J, Le Gal G, Ghanima W, Kline JA
Recurrence after stopping anticoagulants in women with combined oral contraceptive‐associated venous thromboembolism: A systematic review and meta‐analysis
Abdulrehman J, Elbaz C, Aziz D, Parpia S, Fazelzad R, Eischer L, Rodger MA, Cannegieter SC, Cate‐Hoek AT, Nagler M
Long-Term Risk of Major Bleeding after Discontinuing Anticoagulation for Unprovoked Venous Thromboembolism: A Systematic Review and Meta-analysis
Khan F, Rahman A, Tritschler T, Carrier M, Kearon C, Weitz JI, Schulman S, Couturaud F, Becattini C, Agnelli G
Evaluation of patients' experience and related qualitative outcomes in venous thromboembolism: A scoping review.
Genge L, Krala A, Tritschler T, Le Gal G, Langlois N, Dubois S, West C, Duffett L, Skeith L
Long-Term Risk for Major Bleeding During Extended Oral Anticoagulant Therapy for First Unprovoked Venous Thromboembolism.
Khan F, Tritschler T, Le Gal G, Fergusson DA, Rodger MA
Long-Term Risk for Major Bleeding During Extended Oral Anticoagulant Therapy for First Unprovoked Venous Thromboembolism : A Systematic Review and Meta-analysis.
Khan F, Tritschler T, Kimpton M, Wells PS, Kearon C, Weitz JI, Büller HR, Raskob GE, Ageno W, Couturaud F
Long‐term risk of recurrent venous thromboembolism among patients receiving extended oral anticoagulant therapy for first unprovoked venous thromboembolism: A systematic review and meta‐analysis
Khan F, Tritschler T, Kimpton M, Wells PS, Kearon C, Weitz JI, Büller HR, Raskob GE, Ageno W, Couturaud F
Clonal Hematopoiesis in Venous Thromboembolism: Advancing Precision in Risk Prediction and Treatment Outcomes
Principal investigators: Xu, Yan; Carrier, Marc
Keywords: Clonal Hematopoiesis; Major Bleeding; Venous Thromboembolism
The PARTUM (Postpartum Aspirin to Reduce Thromboembolism Undue Morbidity) Trial
Principal investigators: Skeith, Leslie; BARJAT, Tiphaine; Baumann Kreuziger, Lisa; de Boer, Marjon A; Donnelly, Jennifer; El-Chaar, Darine; Eslick, Renee; Guerrero, Maria C; Holm, Charlotte; Jani, Jacques; Malinowski, Ann K; Roberts, Lara; Rodger, Marc A
Keywords: Aspirin; Low-Molecular-Weight Heparin; Postpartum; Prevention; Venous Thromboembolism
Deep Vein Thrombosis Testing in the Emergency Department (the DVTest study)
Principal investigators: de Wit, Kerstin; Parpia, Sameer
Keywords: Deep Vein Thrombosis; Diagnosis; Emergency Department
Enabling and Engaging patients to DECIDE indefinite versus short-term anticoagulation for VTE (DECIDE-VTE): A Stepped-Wedge Cluster Randomized Trial
Principal investigators: Rodger, Marc A
Keywords: Anticoagulation Decision-Making; Extended Anticoagulation Therapy; Knowledge Translation; Patient Decision Aid; Patient-Centred Outcomes; Risk-Benefit Communication; Shared Decision-Making; Stepped-Wedge Cluster Randomized Trial; Venous Thromboembolism
Development of a risk stratification score for recurrent venous thromboembolism and clinically-relevant bleeding in patients with cancer-associated venous thromboembolism. CAN-CATCH Study
Principal investigators: Carrier, Marc
Keywords: Bleeding; Cancer; Risk Stratification; Venous Thromboembolism
Inflammation, clonal hematopoiesis, and venous thromboembolism among ethnic and racially underrepresented older adults
Principal investigators: Xu, Yan; Carrier, Marc; Cénat, Jude Mary; Hsu, Amy T; Lettre, Guillaume
Keywords: Older Adults; Racial Disparity
PECAN - Pulmonary Embolism Canada
Principal investigators: Castellucci, Lana; de Wit, Kerstin; Mendelson, Asher A
Keywords: Pulmonary Embolism
The PARTUM (Postpartum Aspirin to Reduce Thromboembolism Undue Morbidity) Trial
Principal investigators: Skeith, Leslie; Baumann Kreuziger, Lisa; CHAULEUR, celine; de Boer, Marjon A; Donnelly, Jennifer; El-Chaar, Darine; Eslick, Renee; Guerrero, Maria C; Malinowski, Ann K; Roberts, Lara; Rodger, Marc A
Keywords: Aspirin; Low-Molecular-Weight Heparin; Postpartum; Prevention; Venous Thromboembolism
COBRRA trial: Comparison of Bleeding Risk between Rivaroxaban and Apixaban for the treatment of acute venous thromboembolism
Principal investigators: Castellucci, Lana
Keywords: Anticoagulation; Bleeding Risk; Venous Thromboembolism
Colchicine to Quench the Inflammatory Response after Deep Vein Thrombosis: A Pilot Randomized Controlled Trial - CONQUER-DVT Pilot Trial
Principal investigators: Carrier, Marc; Kahn, Susan R; Le Gal, Grégoire; Shivakumar, Sudeep P; Siegal, Deborah M
Keywords: Clotting Defects/Thrombosis; Colchicine; Deep Vein Thrombosis; Inflammation; Pilot Study; Post Thrombotic Syndrome; Randomized Controlled Trial; Venous Thromboembolism
From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.
Frequent collaborators
- Kednapa Thavorn and Kednapa Thavorn: 312 shared papers
- Sam Schulman and James Demetrios Douketis: 59 shared papers
- Dean Fergusson and Brian Hutton: 53 shared papers
- Donald Arnold and Na Li: 47 shared papers
- Brian Hutton and Kednapa Thavorn: 44 shared papers
- Brian Hutton and Kednapa Thavorn: 44 shared papers
- Deborah Siegal and Marc Carrier: 36 shared papers
- Jeffrey Weitz and Peter Lawrence Gross: 35 shared papers
- Sameer Parpia and Kerstin de Wit: 30 shared papers
- Jeffrey Weitz and James Demetrios Douketis: 28 shared papers
- Jeffrey Weitz and Shannon Bates: 25 shared papers
- Frederick Spencer and Sam Schulman: 24 shared papers
- Shannon Bates and James Demetrios Douketis: 24 shared papers
- Frederick Spencer and James Demetrios Douketis: 23 shared papers
- Sam Schulman and Marc Carrier: 23 shared papers
- Dean Fergusson and Kednapa Thavorn: 20 shared papers
- Dean Fergusson and Kednapa Thavorn: 20 shared papers
- Sudeep Shivakumar and Marc Carrier: 20 shared papers
- Marc Carrier and Grégoire Le Gal: 20 shared papers
- James Demetrios Douketis and Deborah Siegal: 18 shared papers
- Sam Schulman and Peter Lawrence Gross: 16 shared papers
- Peter Lawrence Gross and Marc Carrier: 16 shared papers
- Sameer Parpia and Sam Schulman: 15 shared papers
- Sam Schulman and Shannon Bates: 15 shared papers
- Na Li and Sam Schulman: 13 shared papers
- Na Li and James Demetrios Douketis: 13 shared papers
- Marc Carrier and Alejandro Lazo-Langner: 13 shared papers
- Sam Schulman and Sudeep Shivakumar: 12 shared papers
- Vicky Tagalakis and Marc Carrier: 12 shared papers
- Vicky Tagalakis and Sudeep Shivakumar: 11 shared papers
- Marc Rodger and Marc Carrier: 11 shared papers
- Frederick Spencer and Shannon Bates: 10 shared papers
- Sameer Parpia and Shannon Bates: 9 shared papers
- James Demetrios Douketis and Grégoire Le Gal: 9 shared papers
- Vicky Tagalakis and Alejandro Lazo-Langner: 9 shared papers
- Shannon Bates and Leslie Skeith: 8 shared papers
- Peter Lawrence Gross and Deborah Siegal: 8 shared papers
- Sudeep Shivakumar and Grégoire Le Gal: 8 shared papers
- Marc Carrier and Miriam Kimpton: 8 shared papers
- Sam Schulman and Grégoire Le Gal: 7 shared papers
- Sam Schulman and Alejandro Lazo-Langner: 7 shared papers
- Shannon Bates and Kerstin de Wit: 7 shared papers
- Marc Carrier and Leslie Skeith: 7 shared papers
- Sameer Parpia and Grégoire Le Gal: 6 shared papers
- Marc Rodger and Grégoire Le Gal: 6 shared papers
- Donald Arnold and Shannon Bates: 5 shared papers
- Donald Arnold and Sudeep Shivakumar: 5 shared papers
- Sam Schulman and Kerstin de Wit: 5 shared papers
- Marc Rodger and Sudeep Shivakumar: 5 shared papers
- Kednapa Thavorn and Grégoire Le Gal: 5 shared papers
- Grégoire Le Gal and Kednapa Thavorn: 5 shared papers
- Grégoire Le Gal and Alejandro Lazo-Langner: 5 shared papers
- Frederick Spencer and Grégoire Le Gal: 4 shared papers
- Sam Schulman and Marc Rodger: 4 shared papers
- Shannon Bates and Grégoire Le Gal: 4 shared papers
- Peter Lawrence Gross and Grégoire Le Gal: 4 shared papers
- Brian Hutton and Grégoire Le Gal: 4 shared papers
- Marc Rodger and Grégoire Le Gal: 4 shared papers
- Donald Arnold and Grégoire Le Gal: 3 shared papers
- Na Li and Grégoire Le Gal: 3 shared papers
- Jeffrey Weitz and Grégoire Le Gal: 3 shared papers
- Deborah Siegal and Leslie Skeith: 3 shared papers
- Deborah Siegal and Miriam Kimpton: 3 shared papers
- Kerstin de Wit and Grégoire Le Gal: 3 shared papers
- Dean Fergusson and Marc Rodger: 3 shared papers
- Vicky Tagalakis and Grégoire Le Gal: 3 shared papers
- Brian Hutton and Miriam Kimpton: 3 shared papers
- Marc Carrier and Carol Gonsalves: 3 shared papers
- Leslie Skeith and Grégoire Le Gal: 3 shared papers
- Grégoire Le Gal and Miriam Kimpton: 3 shared papers
- Deborah Siegal and Grégoire Le Gal: 2 shared papers
- Dean Fergusson and Grégoire Le Gal: 2 shared papers
- Grégoire Le Gal and Carol Gonsalves: 2 shared papers
- Shannon Bates and Carol Gonsalves: 1 shared paper
- Medicine
- Department of Medicine
- School of Epidemiology and Public Health
- Oncology
- Department of Epidemiology and Biostatistics
- Computing and Software
- Other
Co-authors at University of Ottawa, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.
Marc Carrier
Department of Medicine
20 shared papers, latest 2022
James Demetrios Douketis
Medicine
9 shared papers, latest 2026
Sudeep Shivakumar
Medicine
8 shared papers, latest 2026
Sam Schulman
Medicine
7 shared papers, latest 2026
Marc Rodger
Department of Medicine
6 shared papers, latest 2023
Sameer Parpia
Oncology
6 shared papers, latest 2022
Alejandro Lazo-Langner
Department of Epidemiology and Biostatistics
5 shared papers, latest 2026
Kednapa Thavorn
Faculty
5 shared papers, latest 2023
Kednapa Thavorn
School of Epidemiology and Public Health
5 shared papers, latest 2023
Shannon Bates
Medicine
4 shared papers, latest 2019
Brian Hutton
School of Epidemiology and Public Health
4 shared papers, latest 2023
Peter Lawrence Gross
Medicine
4 shared papers, latest 2019
Marc Rodger
Medicine
4 shared papers, latest 2026
Frederick Spencer
Medicine
4 shared papers, latest 2019
Miriam Kimpton
Faculty
3 shared papers, latest 2021
Jeffrey Weitz
Medicine
3 shared papers, latest 2022
Leslie Skeith
Medicine
3 shared papers, latest 2024
Kerstin de Wit
Medicine
3 shared papers, latest 2026
Donald Arnold
Medicine
3 shared papers, latest 2019
Vicky Tagalakis
Medicine
3 shared papers, latest 2019
Na Li
Computing and Software
3 shared papers, latest 2019
Carol Gonsalves
Department of Medicine
2 shared papers, latest 2020
Sudeep Shivakumar
Medicine
2 shared papers, latest 2019
Doug Coyle
School of Epidemiology and Public Health
2 shared papers, latest 2023
Timothy Ramsay
School of Epidemiology and Public Health
2 shared papers, latest 2019
Kerstin de Wit
Emergency Medicine
2 shared papers, latest 2026
Deborah Siegal
Medicine
2 shared papers, latest 2021
Dean Fergusson
Department of Medicine
2 shared papers, latest 2023
Alaa Rostom
Department of Medicine
1 shared papers, latest 2021
Antonio Giulivi
Pathology and Laboratory Medicine
1 shared papers, latest 2018
Dar Dowlatshahi
Department of Medicine
1 shared papers, latest 2021
David Stewart
Department of Medicine
1 shared papers, latest 2019
Graham Roche Nagle
Department of Surgery
1 shared papers, latest 2017
Glenwood Goss
Department of Medicine
1 shared papers, latest 2019
Kerstin de Wit
Faculty
1 shared papers, latest 2019
Venkatesh Thiruganasambandamoorthy
Emergency Medicine
1 shared papers, latest 2019
Ayub Akbari
Department of Medicine
1 shared papers, latest 2021
Edward Clark
Department of Medicine
1 shared papers, latest 2021
Vignan Yogendrakumar
Faculty
1 shared papers, latest 2021
Marc Afilalo
Cardiology & Clinical Epidemiology
1 shared papers, latest 2019
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Profile data last refreshed on September 25, 2026 from the university directory, publication records and CIHR, NSERC and SSHRC funding.