- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05058924
Low Molecular Weight hEparin vs. Aspirin Post-partum (LEAP)
January 22, 2024 updated by: Mount Sinai Hospital, Canada
This is single centre pilot, randomized controlled trial assessing postpartum prophylactic anticoagulation with 3 weeks of LMWH followed by 3 weeks of Aspirin compared to standard of care of prophylactic LMWH for 6 weeks at moderate to high risk of developing VTE.
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Detailed Description
A single centre pilot, randomized controlled trial assessing postpartum prophylactic anticoagulation with 3 weeks of LMWH followed by 3 weeks of Aspirin compared to standard of care of prophylactic LMWH for 6 weeks for women at moderate to high risk of developing VTE to determine feasibility of conducting a large non inferiority trial using the same regimens.
Study Type
Interventional
Enrollment (Estimated)
50
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Evangelia Vlachodimitropoulou Koumoutsea, MBBS
- Phone Number: 416-824-9207
- Email: Evangelia.VlachodimitropoulouKoumoutsea@sinaihealth.ca
Study Contact Backup
- Name: Ravnit Lomash, BDS
- Phone Number: 4700 416-586-4800
- Email: Ravnit.Lomash@sinaihealth.ca
Study Locations
-
-
Ontario
-
Toronto, Ontario, Canada, M5G 1Z5
- Recruiting
- Mount Sinai Hospital
-
Contact:
- Evangelia Vlachodimitropoulou, MD
- Phone Number: 4168249207
- Email: evangelia.vlachodimitropoulou@sinaihealth.ca
-
Principal Investigator:
- Nadine Shehata, MD
-
Sub-Investigator:
- Evangelia Vlachodimitropoulou, MD
-
Sub-Investigator:
- Kellie Murphy, MD
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Description
Inclusion Criteria:
- Personal history of unprovoked VTE prior to pregnancy or hormone associated VTE and not prescribed therapeutic anticoagulation or
- Family history (1st degree relative) of VTE and antithrombin deficiency, protein C or protein S deficiency or
- Combined thrombophilia or homozygous for the factor V Leiden mutation or prothrombin gene mutation, and family history of VTE (1st degree relative) and
- > 18 years of age.
Exclusion Criteria:
- Pre-existing indication for therapeutic LMWH
Contraindication to ASA:
- Known ASA allergy
- Documented history of gastrointestinal ulcer
- Known platelet count < 50x10^9/L at any time during the current pregnancy or postpartum
- Contraindication to LMWH, e.g. known allergy
- Active bleeding at any site, excluding physiological vaginal bleeding
- Patients with bleeding disorders
- Known severe hypertension (SBP >200mm/hg and/or DBP >120mm/hg) during the current pregnancy or postpartum
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Prophylactic Low Molecular Weight Heparin (LMWH)
Prophylactic LMWH for 6 weeks postpartum
|
Enoxaparin 40 mg/dalteparin 5000 U/tinzaparin 4500 U subcutaneously daily for women with weight <100 kg for 6 weeks.
Other Names:
|
Experimental: Prophylactic Low Molecular Weight Heparin (LMWH) + Low Dose Aspirin
Prophylactic LMWH for 3 weeks followed by low dose Aspirin for 3 weeks.
|
Enoxaparin 40 mg/dalteparin 5000 U/tinzaparin 4500 U subcutaneously daily for women with weight <100 kg for three weeks followed by ASA 81 mg orally daily for three weeks.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Enrollment Rate
Time Frame: 1 year
|
1 year
|
|
Consent Rate
Time Frame: 1 year
|
1 year
|
|
Adherence to Prescription
Time Frame: 6 weeks
|
Utilization of co-interventions for both: control group (6 week of Low Molecular Weight Heparin) or Treatment group (3 week of low molecular weight Heparin and 3 week of low dose aspirin).
|
6 weeks
|
Withdrawal of consent rate
Time Frame: 1 year
|
1 year
|
|
Rates of contamination
Time Frame: 6 weeks
|
List of the concurrent medication will be gathered on 3 week follow up, 6 week follow up and early discontinuation (before 6 weeks).
|
6 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
VTE event rate
Time Frame: 3 months
|
VTE must be confirmed either by Doppler ultrasound or V/Q scan or computer tomography (CT).
Imaging will not be performed on all patients, only those with symptoms of VTE event.
Event rate of VTE will be calculated by number of VTE events by Total days in this study.
This number of VTE event is collected during 3 week follow up, 6 week follow up, 3 months follow-up and on early discontinuation date (before 3 months follow up).
At the end of the study (after 3 month), the total VTE event rate is calculated.
|
3 months
|
Bleeding assessment six weeks following delivery
Time Frame: 6 weeks
|
According to the International Society on Thrombosis and Hemostasis (ISTH) scoring system.
The bleeding assessments are collected on 3 week phone call and 6 week phone call or early discontinuation visit (before 6 week follow up)
|
6 weeks
|
Anticoagulation Satisfaction Assessment using the Duke Anticoagulation Satisfaction Scale (DASS)
Time Frame: 6 weeks
|
The maximum value would be 65, indicating the worst quality of life.
Minimum value would be 13, indicating best quality of life.
This satisfaction assessment would be collected on dosing (day 1), 3 week follow up, 6 week follow up and if early discontinuation.
|
6 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Nadine Shehata, MD, Department of Medicine/IHPME, University of Toronto, Division of Hematology, Mount Sinai Hospital
- Principal Investigator: Evanglia Vlachodimitropoulou Koumoutsea, MBBS, Department of Obstetrics and Gynecology, University of Toronto, Mount Sinai Hospital
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Schulman S, Kearon C; Subcommittee on Control of Anticoagulation of the Scientific and Standardization Committee of the International Society on Thrombosis and Haemostasis. Definition of major bleeding in clinical investigations of antihemostatic medicinal products in non-surgical patients. J Thromb Haemost. 2005 Apr;3(4):692-4. doi: 10.1111/j.1538-7836.2005.01204.x.
- Matharu GS, Kunutsor SK, Judge A, Blom AW, Whitehouse MR. Clinical Effectiveness and Safety of Aspirin for Venous Thromboembolism Prophylaxis After Total Hip and Knee Replacement: A Systematic Review and Meta-analysis of Randomized Clinical Trials. JAMA Intern Med. 2020 Mar 1;180(3):376-384. doi: 10.1001/jamainternmed.2019.6108.
- Bates SM, Rajasekhar A, Middeldorp S, McLintock C, Rodger MA, James AH, Vazquez SR, Greer IA, Riva JJ, Bhatt M, Schwab N, Barrett D, LaHaye A, Rochwerg B. American Society of Hematology 2018 guidelines for management of venous thromboembolism: venous thromboembolism in the context of pregnancy. Blood Adv. 2018 Nov 27;2(22):3317-3359. doi: 10.1182/bloodadvances.2018024802.
- Samsa G, Matchar DB, Dolor RJ, Wiklund I, Hedner E, Wygant G, Hauch O, Marple CB, Edwards R. A new instrument for measuring anticoagulation-related quality of life: development and preliminary validation. Health Qual Life Outcomes. 2004 May 6;2:22. doi: 10.1186/1477-7525-2-22.
- Rodeghiero F, Tosetto A, Abshire T, Arnold DM, Coller B, James P, Neunert C, Lillicrap D; ISTH/SSC joint VWF and Perinatal/Pediatric Hemostasis Subcommittees Working Group. ISTH/SSC bleeding assessment tool: a standardized questionnaire and a proposal for a new bleeding score for inherited bleeding disorders. J Thromb Haemost. 2010 Sep;8(9):2063-5. doi: 10.1111/j.1538-7836.2010.03975.x. No abstract available.
- Schulman S, Angeras U, Bergqvist D, Eriksson B, Lassen MR, Fisher W; Subcommittee on Control of Anticoagulation of the Scientific and Standardization Committee of the International Society on Thrombosis and Haemostasis. Definition of major bleeding in clinical investigations of antihemostatic medicinal products in surgical patients. J Thromb Haemost. 2010 Jan;8(1):202-4. doi: 10.1111/j.1538-7836.2009.03678.x. Epub 2009 Oct 30.
Helpful Links
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
August 29, 2021
Primary Completion (Estimated)
February 29, 2024
Study Completion (Estimated)
June 30, 2024
Study Registration Dates
First Submitted
August 25, 2021
First Submitted That Met QC Criteria
September 16, 2021
First Posted (Actual)
September 28, 2021
Study Record Updates
Last Update Posted (Actual)
January 24, 2024
Last Update Submitted That Met QC Criteria
January 22, 2024
Last Verified
May 1, 2023
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Cardiovascular Diseases
- Vascular Diseases
- Embolism and Thrombosis
- Thromboembolism
- Venous Thromboembolism
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Peripheral Nervous System Agents
- Enzyme Inhibitors
- Analgesics
- Sensory System Agents
- Anti-Inflammatory Agents, Non-Steroidal
- Analgesics, Non-Narcotic
- Anti-Inflammatory Agents
- Antirheumatic Agents
- Fibrinolytic Agents
- Fibrin Modulating Agents
- Platelet Aggregation Inhibitors
- Cyclooxygenase Inhibitors
- Antipyretics
- Anticoagulants
- Aspirin
- Heparin
- Calcium heparin
- Heparin, Low-Molecular-Weight
- Tinzaparin
- Dalteparin
Other Study ID Numbers
- 20-0275A
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
UNDECIDED
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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