Betrixaban, a factor Xa inhibitor, has been approved for the prophylaxis of venous thromboembolism (VTE) in at-risk adult patients hospitalized with an acute illness, according to an announcement from the Food and Drug Administration.
Approval was based on results from a randomized, double-blind clinical trial in which over 7,000 hospitalized patients at risk for VTE received either extended-duration betrixaban (35-42 days) or short duration enoxaparin (6-14 days), a low molecular weight heparin administered subcutaneously. The rate of deep vein thrombosis, nonfatal pulmonary embolism, or VTE-related death was 4.4% among patients receiving betrixaban and 6% among patients receiving enoxaparin (relative risk, 0.75; 95% confidence interval: 0.61, 0.91).
The recommended dosage for betrixaban is 80 mg per day for 35-42 days at the same time every day with food, after a dose of 160 mg on the first day of treatment.
Betrixaban will be marketed as Bevyxxa by Portola.
Find the full FDA announcement and prescribing information on the FDA website.