No registrations found.
ID
Source
Brief title
Health condition
First episode of deep vein thrombosis (DVT) or pulmonary embolism (PE).
Sponsors and support
Nederlandse Hartstichting (Dutch Heart foundation)
Intervention
Outcome measures
Primary outcome
recurrent VTE 18 months after the acute episode of VTE
Secondary outcome
1. Recurrent VTE at the end of the study
2. A composite endpoint of recurrent VTE and bleeding at the end of the study
3. Quality of life
4. costs of testing and subsequent predefined prolongation of anticoagulant therapy
Background summary
A randomized controlled trial of testing and no testing for thrombophilia in patients with a first episode of VTE will be performed. Subsequent additional anticoagulant treatment for a predefined period will be installed in those in whom thrombophilia is detected in the testing group, while others will receive a standard predefined duration of treatment. In addition, the impact on quality of life of thrombophilia testing will be measured. Efficacy and safety outcomes are risk for recurrent VTE and clinically important bleeding (also as a composite outcome). Other outcomes are overall quality of life and costs associated with the outcome measures 18 months after the initial episode of VTE. Outcomes will be compared between thrombophilic patients allocated to the testing group and to the no testing group. A total of 1336 patients will have to be included to detect a benefit of 90% by prolonging anticoagulant treatment in patients with thrombophilia while on treatment, and no reduction in the 6 months after cessation of treatment (overall RRR 55%) [power 80%, CI 95%].
Study objective
Testing for thrombophilia after a first episode of VTE with subsequent prolongation of anticoagulant treatment in thrombophilic patients is beneficial in terms of clinical outcomes, quality of life, and costs.
Intervention
Randomization between disclosure and undisclosure of results of thrombophilia screening and subsequent additional anticoagulant treatment for a predefined period will be installed in those in whom thrombophilia is detected in the disclosure group
P.O. Box 22660
S. Middeldorp
Meibergdreef 9
Amsterdam 1100 DD
The Netherlands
+31 (0)20 5665976
alife@amc.uva.nl
P.O. Box 22660
S. Middeldorp
Meibergdreef 9
Amsterdam 1100 DD
The Netherlands
+31 (0)20 5665976
alife@amc.uva.nl
Inclusion criteria
1. Subjects must be willing and able to give written informed consent
2. Confirmed symptomatic DVT, i.e., proximal vein or extensive calf-vein
thrombosis, involving at least the upper third part of the deep calf veins (trifurcation, AND/OR confirmed symptomatic PE, no longer than 2 months prior to randomization
3. age 18 years or older
Exclusion criteria
1. Previous episodes of DVT or PE
2. Active bleeding or high risk for bleeding contraindicating treatment with LMWH, fondaparinux or VKA
3. Insertion of a caval filter to treat the episode of VTE
4. Active cancer or anti-cancer treatment in the 6 months prior to the acute episode of VTE
5. Life expectancy < 18 months
6. Arterial thrombotic events in the context of a confirmed antiphospholipid antibody syndrome
7. Indications for VKA other than DVT
Design
Recruitment
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| NTR-new | NL773 |
| NTR-old | NTR784 |
| Other | : N/A |
| ISRCTN | ISRCTN07836779 |