Deep Vein Thrombosis Clinical Trial
Official title:
Multicentric Randomized Study of Xarelto Versus no Treatment for the Prevention of Recurrent Thrombosis in Patients With Chronic Portal Vein Thrombosis.
Open randomized therapeutic study to assess the efficacy of Xarelto 15mg/day in the recurrence of thromboembolic event compared to an untreated group in patients with chronic portal vein thrombosis without high risk thrombophilia.
Chronic portal vein thrombosis (PVT) is a rare disease, affecting young patients, characterized by permanent obstruction of the portal vein trunk causing portal hypertension. In 60-70% of cases it is related to high risk, moderate or mild prothrombotic risk factors. Accordingly, there are 2 types of complications from PVT :(i) gastrointestinal haemorrhage related to portal hypertension; and (ii) recurrent thrombosis. Recurrent thrombosis its most dreaded complication as it may lead to intestinal infarction with a related mortality of 20-60% and a high risk of intestinal insufficiency. Gastrointestinal haemorrhage related to portal hypertension occurs in 20% patients/year. It is less frequent in patients treated with medical or endoscopic prophylaxis for variceal bleeding. Retrospective data shows that anticoagulation does not worsen the prognosis, and may conversely improve it. Thus, in patients at risk for gastrointestinal bleeding due to portal hypertension and a mild or moderate risk of recurrent thrombosis, the benefit-risk ratio of anticoagulation therapy is unclear. The aim of this open randomised trial is to assess the efficacy of Xarelto 15mg/day, a new oral factor Xa inhibitor, in the recurrence of thromboembolic event and the risk of major bleeding compared to an untreated group in patients with chronic portal vein thrombosis without high risk thrombophilia. The hypothesis of the trial is that treatment with Xarelto® would reduce the risk of recurrence of acute deep vein thrombosis (DVT) regardless location, with limited increase in the risk of hemorrhage in patients with chronic portal thrombosis and no high-risk factors for thrombosis recurrence This is a national, multicentric, interventional study. 17 french centers already agreed to participate. 296 patients will be included on a 3 years period with 2 to 4 years treatment period. All data will be collected after informed consent will be obtained. ;
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