Abstract
Thrombosis rates among young adults receiving asparaginase (ASP) for acute lymphoblastic leukemia (ALL) can reach 34%, with highest risk during induction. Our institution implemented a standard practice of 1 mg/kg/day enoxaparin administered to young adults with ALL who are treated with ASP during induction. We performed a retrospective analysis of patients who received thromboprophylaxis with enoxaparin 1 mg/kg/day during ASP-containing induction for ALL at Oregon Health & Science University from 2012 to 2023. The primary outcome was the cumulative incidence of thrombosis during induction. Bleeding events were assessed. Sixty-two patients were included in our analysis. Four patients (6.5%; 95% CI 1.8%-15.7%) experienced a thrombotic event. Three events were catheter-associated and 1 event was a distal lower extremity deep vein thrombosis related to myositis. No cerebral sinus thromboses, thrombosis-related deaths or major bleeding events occurred. Intermediate-dose enoxaparin is a promising thromboprophylaxis strategy and warrants further prospective research.
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