Study Stopped
Lack of enrollment
Comparison of Oral Anticoagulants for Extended VEnous Thromboembolism
COVET
1 other identifier
interventional
44
1 country
1
Brief Summary
Comparison of Oral anticoagulants (warfarin, apixaban and rivaroxaban) for extended VEnous Thromboembolism.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for phase_4
Started Aug 2018
Shorter than P25 for phase_4
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 20, 2017
CompletedFirst Posted
Study publicly available on registry
June 22, 2017
CompletedStudy Start
First participant enrolled
August 1, 2018
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 1, 2019
CompletedStudy Completion
Last participant's last visit for all outcomes
May 1, 2019
CompletedResults Posted
Study results publicly available
August 14, 2019
CompletedDecember 13, 2019
December 1, 2019
9 months
June 20, 2017
July 26, 2019
December 12, 2019
Conditions
Outcome Measures
Primary Outcomes (2)
Number of Subjects With Clinically Relevant Bleeding Events
Primary outcome of Clinically relevant bleeding (composite of major bleeding (MB) and/or clinically relevant non major bleeding (CRNMB))
Randomization to 12 months
Number of Subjects With Recurrent Venous Thromboembolism (VTE)
Primary efficacy outcome of recurrent VTE
Randomization to 12 months
Other Outcomes (5)
Number of Subjects Experiencing Major Bleeding
Randomization to 12 months
Number of Subjects Experiencing Clinically Relevant Non-major Bleeding
Randomization to 12 months
Number of Subjects With Premature Termination of Study Medication
Randomization to 12 months
- +2 more other outcomes
Study Arms (3)
Warfarin
ACTIVE COMPARATORSubjects randomized to Warfarin will have warfarin administered daily in order to maintain a target INR of 2-3
Apixaban
ACTIVE COMPARATORSubjects randomized to Apixaban will have apixaban administered study drug of 2.5mg twice daily
Rivaroxaban
ACTIVE COMPARATORSubjects randomized to Rivaroxaban will have rivaroxaban administered study drug of 10 mg daily
Interventions
Will be randomized to receive open label warfarin daily to achieve a target INR of 2-3
Eligibility Criteria
You may qualify if:
- To be eligible for this trial, patients must meet all of the following criteria:
- Have confirmed acute, symptomatic, first lower extremity proximal DVT and/or PE that is NOT associated with a transient risk factor.
- Have completed an initial treatment course of oral anticoagulant therapy for 3-12 months and have a recommendation from their provider to continue anticoagulation indefinitely.
- Have the capacity to understand and sign an informed consent form.
- Be 18 years of age and older.
- Under the direct care of a healthcare provider for treatment of VTE for the length of time in the study.
You may not qualify if:
- If a patient meets any of the following criteria, he or she may not be enrolled in the study:
- Creatinine clearance (CrCl) \< 30 mL/min as determined by Cockcroft-Gault formula documented within 3 months from date of consent
- Significant liver disease (Child-Pugh B or C)
- Concomitant use of medications that are strong P-glycoprotein or CYP3A4 inducers/inhibitors
- Another indication for chronic therapeutic-dose anticoagulation, such as atrial fibrillation (i.e., rivaroxaban, 10 mg daily, or apixaban, 2.5 mg twice daily, would not be appropriate therapy)
- A clinical indication for a specific anticoagulant regimen (e.g., warfarin with a target INR of 2-3 is recommended for patients with 'triple-positive' antiphospholipid syndrome).
- Life expectancy \< 3 months
- Currently pregnant or breast feeding
- Unable / unwilling to pay for one (or more) of the treatment options
- Active Cancer defined as:
- Diagnosed with cancer within the past 6 months; or Recurrent, regionally advanced or metastatic disease; Currently receiving treatment or have received any treatment for cancer during the 6 months prior to randomization; or A hematologic malignancy not in complete remission
- Unwilling / unlikely to agree to follow up
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Duke Universitylead
- Patient-Centered Outcomes Research Institutecollaborator
Study Sites (1)
University of California Irvine Medical Center
Orange, California, 92868, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- Dr. Thomas Ortel
- Organization
- Duke University
Study Officials
- PRINCIPAL INVESTIGATOR
Thomas Ortel, MD
Duke University
Publication Agreements
- PI is Sponsor Employee
- No
- Restrictive Agreement
- No
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
June 20, 2017
First Posted
June 22, 2017
Study Start
August 1, 2018
Primary Completion
May 1, 2019
Study Completion
May 1, 2019
Last Updated
December 13, 2019
Results First Posted
August 14, 2019
Record last verified: 2019-12