Active Studies: Currently Recruiting

01. 4D

Full Study Title: The Designer D-dimer Deep Vein Thrombosis Diagnosis (4D) Study

Principal Investigator: Clive Kearon

Funding: CIHR (Canadian Institutes of Health Research)

Design: Prospective cohort study to assess a new diagnostic management strategy for suspected Deep Vein Thrombosis in outpatients

For more information: NCT02038530



Full Title Study: Age-adjusted D-dimer Cutoff Levels to Rule Out Deep Vein Thrombosis: a Prospective Outcome Study

Principal Investigators: Gregoire Le Gal, Marc Righini

Funding: HSF (Heart and Stroke Foundation of Canada)

Design: Prospective cohort to validate an age-adjusted D-dimer cut-off to rule out DVT (deep vein thrombosis)

For more information: NCT02384135



Full Study Title:  Central Venous Catheter (CVC) Associated Deep Vein Thrombosis (DVT) in Cancer Patients

Principal Investigators: Michael Kovacs

Funding: self-funded

Design: Cohort study of cancer patients with central line associated DVT (deep vein thrombosis) in the upper extremity treated with 1 week of LMWH (low-molecular-weight heparin) followed by Apixaban 5 mg bid x 3 months

For more information: NCT03100071



Full Study Title: Comparison of Bleeding Risk Between Rivaroxaban and Apixaban for the Treatment of Acute Venous Thromboembolism

Principal Investigator: Lana Castellucci

Funding: CIHR (Canadian Institutes of Health Research)

Design: Open-label RCT (randomized clinical trial) comparing bleeding risk with rivaroxaban versus apixaban for acute treatment of VTE (venous thromboembolism)

For more information: NCT03266783

08. LEaD

Full Study Title: Safely Ruling Out Deep Vein Thrombosis in Pregnancy With the LEFt Clinical Decision Rule and D-Dimer

Principal Investigator: Marc Rodger

Funding: CIHR (Canadian Institutes of Health Research)

Design: Prospective cohort study using the LEFt clinical decision rule and D-dimer for DVT (deep vein thrombosis) diagnosis in pregnant women who present with signs and symptoms of DVT (deep vein thrombosis)

For more information: NCT02507180


09. PERIOP-01

Full Study Title: Extended Peri-operative Tinzaparin to Improve Disease-free Survival in Patients With Resectable Colorectal Cancer

Principal Investigators: Marc Carrier, Rebecca Auer

Funding: CIHR (Canadian Institutes of Health Research), LEO (Leo Pharma)

Design: Open-label RCT (randomized clinical trial) of extended peri-operative tinzaparin in patients with resectable colorectal cancer to improve cancer specific survival following surgical resection

For more information: NCT01455831



Full Study Title: 

Principal Investigators: Sam Schulman

Funding: Octapharma

Design: Pilot prospective cohort study assessing the prothrombin complex concentrate for emergency surgery in patients on oral Xa-inhibitors



Full Study Title: Antithrombotic Therapy to Ameliorate Complications of COVID-19

Principal Investigator: Ryan Zarychanski

Patient Partners: N/A

Funding: CIHR (Canadian Institutes of Health Research)

Design: A prospective, open-label, randomized, multicentre, adaptive clinical trial

For more information: NCT04372589



14. RIVASVT-100

Principal Investigators: Aurélien Delluc

Mark Crowther (Hamilton)
Sébastien Miranda (Ottawa)
Alejandro Lazo-Langner (London)
Walter Agenda (Italy)

Funding: CanVECTOR Pilot

Design: Prospective pilot cohort study investigating treatment of portal, mesenteric, and splenic vein thrombosis with rivaroxaban.

15. SSPE

Full Study Title: A Study to Evaluate the Safety of Withholding Anticoagulation in Patients With Subsegmental PE Who Have a Negative Serial Bilateral Lower Extremity Ultrasound

Principal Investigator: Marc Carrier

Funding: HSF (Heart and Stroke Foundation of Canada)

Design: Prospective management cohort study of patients with isolated SSPE (subsegmental pulmonary embolism), left untreated

For more information: NCT01455818


16. TRIM-Line

Full Study Title: Thromboprophylaxis with Rivaroxaban in Patients with Malignancy and Central Venous Lines

Principal Investigators: Rick Ikesaka, Marc Carrier

Funding: CanVECTOR Pilot

Design: Pilot double-blind placebo-controlled RCT (randomized clinical trial) investigating primary thromboprophylaxis with rivaroxaban in patients with malignancy and central venous catheters.

For more information: NCT03506815


Full Study title: Venous Thrombosis Virtual Surveillance in COVID

Principal Investigators: Deborah Siegel

Funding: CIHR (Canadian Institutes of Health Research)

Design: Prospective multi-centre observational cohort study of 500 patients enrolled consecutively at 12 sites over 3 months

18. WAVe

Principal Investigators: Marc Carrier

Funding: Pfizer

Design: Prospective cohort study assessing the use of weight-adjusted dalteparin inpatients over 90 kg with acute cancer-associated venous thromboembolism.

For more information: NCT03297359