Marc Carrier

Marc Carrier

MD, MSc, FRCPC, DRCPSC

Senior Scientist, Inflammation and Chronic Disease

Ottawa Hospital Research Institute

Chief, Division of Hematology

Department of Medicine

Professor, Department of Medicine

University of Ottawa

Bio

Marc Carrier, MD, MSc, FRCPC, is Head of the Division of Hematology in the Department of Medicine at The Ottawa Hospital, a Professor in the Faculty of Medicine, University of Ottawa and a Senior Scientist in the Clinical Epidemiology Program of The Ottawa Hospital Research Institute. He holds a Tier 1 Research Chair in Venous Thromboembolism and Cancer from the University of Ottawa and New Investigator Award from the Heart and Stroke Foundation of Canada. In 2015 he was the recipient of the prestigious Dr. Michel Chrétien Researcher of the Year Award for his study published in the New England Journal of Medicine that improves care for VTE patients around the world.

Clinical research is focused in venous thromboembolic disease and cancer, including cancer screening, prevention and management. Is currently the Principal Investigator on four peer-reviewed clinical trials (Heart and Stroke Foundation (2) and Canadian Institutes of Health Research (2) ) and numerous industry sponsored trials. He has published important systematic reviews and has had multiple international speaking invitations to speak on the topics of cancer and thrombosis.

Research Goals and Interests

Venous thromboembolic disease and cancer, including cancer screening, prevention and management

My most important research contributions to date are the SOME, AVERT, SSPE and PERIOP-01 trials (co-PI and first or corresponding author; NEJM Aug 2015, NEJM Feb 2019, Ann Intern Med Jan 2022 and BMJ Sept 2022, respectively). The results have generated interest among clinicians, patients and changed clinical practice. I am currently the co-Principal Investigator of the CIHR funded multi-center TRIM-Line trial. Patients with cancer and a central venous catheter are at high risk of VTE complications. The TRIM-Line trial is an international multicentre, randomized, double–blind study comparing 10 mg daily of rivaroxaban versus placebo in patients with cancer and central-venous catheter. The primary objective of the study is to determine if thromboprophylactic treatment (3 months) with a direct oral anticoagulant is effective at reducing the rate of symptomatic and incidental VTE events in this patient population (NCT05029063). I am also the Co-Principal Investigator of the CONQUER-DVT trial. Excessive inflammation has been linked to persistent hypercoagulability, incomplete thrombus clearance and exacerbation of vein wall injury and fibrosis, thereby potentially contributing to the development of chronic consequences of VTE including post-thrombotic syndrome (PTS). PTS can be debilitating and decreases quality of life in patients with deep vein thrombosis. Multiple clinical trials have demonstrated that low-dose colchicine reduces cardiovascular events in patients with acute or chronic coronary artery disease by attenuating inflammation activation The CONQUER-DVT trial is a multinational (Canada and Italy) multi-centered double-blind randomized controlled trial assessing whether low-dose colchicine (0.5 mg daily) decreases PTS in patients with DVT (NCT06440694).


News


Publications

Venous thromboembolism and bleeding in cancer patients: role of inflammatory and cardiac biomarkers

2025-11-19 Go to publication

Low-molecular-weight heparin vs aspirin postpartum (LEAP): a single-center pilot randomized control trial

2025-11-01 Go to publication

High usability, low adoption: The struggle of a perioperative patient decision aid for extended thromboprophylaxis after major abdominal cancer surgery

2025-10-01 Go to publication

Impact of clonal hematopoiesis of indeterminate potential on arterial atherothrombosis and venous thromboembolism: Protocol for a systematic review and meta-analysis

2025-07-16 Go to publication

Predicting the unpredictable: Personalizing VTE risk in cancer with the Caravaggio Score

2025-07-01 Go to publication

Canadian Institutes of Health Research (CIHR) – Project Grant: 2021-2026. Role: Co-Principal Investigator with Dr. Rick Ikesaka. Primary thromboprophylaxis with rivaroxaban in patients with malignancy and central venous catheters: TRIM-Line.

CIHR – Project Grant: Apr 2025-Mar 2028. Role: Principal Investigator. Development of a risk stratification score for recurrent venous thromboembolism and clinically relevant bleeding in patients with cancer-associated venous thromboembolism. CAN-CATCH Study.

CIHR – Project Grant: Apr 2025-Mar 2030. Role: Co-Principal Investigator with Dr. Joseph Shaw. Active cancer patients having cancer-related invasive procedures or surgery and needing perioperative management of anticoagulation therapy (ACE-HIGH): A prospective management cohort study.

CIHR – Project Grant: Oct 2023-Sep 2026. Role: Principal Investigator. Colchicine to quench the inflammatory response after deep vein thrombosis: A pilot randomized controlled trial - CONQUER-DVT Pilot Trial.

CIHR – Team Grant: Aug 1, 2024-Jul 31, 2025. Role: Co-Principal Investigator with Dr. Yan Xu. Inflammation, clonal hematopoiesis, and venous thromboembolism among ethnic and racially underrepresented older adults.

CIHR – Project Grant: 2019-2024. Role: Co-Principal Investigator. Co-Principal Investigator: Dr. Aurélien Delluc. Screening for Occult Malignancy in Patients with Unprovoked Venous Thromboembolism: a Randomized Controlled Trial using 18F-Fluorodeoxyglucose Positron Emission Computed Tomography. (SOME-2)


Related Research at The Ottawa Hospital