Positive Results for New Anticoagulant From Daiichi Sankyo Reply

A new entrant in the growing oral anticoagulant field shows promise for the treatment of venous thromboembolism (VTE) and pulmonary embolism (PE). The drug, edoxaban, is a new, once-daily Factor Xa inhibitor with a rapid onset of action that is under development by Daiichi Sankyo. Results of the Hokusai-VTE trial were presented at the European Society of Cardiology meeting in Amsterdam and published simultaneously in the New England Journal of Medicine.

The Hokusai-VTE investigators randomized 4921 patients with VTE and 3319 patients with PE to either warfarin or edoxaban. The trial differed from some earlier trials with new oral anticoagulants in that patients were treated following a lead-in period with heparin. In addition, patients were treated for as short as three months or as long as a year at the discretion of the physician, though patients were followed for a full year. Patients with low body weight or renal impairment received a half dose of edoxaban. The investigators said the design was intended to reflect the full spectrum of conditions clinicians see in real life.

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New Anticoagulant Found Safe And Effective In Acute Venous Thromboembolism 1

In a large clinical trial the new oral anticoagulant apixaban (Eliquis, Pfizer and Bristol-Myers Squibb) was at least as effective as standard therapy and caused fewer bleeding complications in patients with acute venous thromboembolism. The results of the AMPLIFY (Apixaban for the Initial Management of Pulmonary Embolism and Deep-Vein Thrombosis as First-Line Therapy) trial are being presented on Monday at the annual meeting of the International Society on Thrombosis and Haemostasis in Amsterdam and are being published in the New England Journal of Medicine. (The embargo on the trial was lifted early by the Journal after being broken by Reuters.)

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Prolonged Anticoagulation With Apixaban Found Beneficial In Venous Thromboembolism Reply

A new study suggests that extending anticoagulant therapy for an additional year may be beneficial after patients with venous thromboembolism complete their initial course of therapy. The results of AMPLIFY-EXT (Apixaban after the Initial Management of Pulmonary Embolism and Deep Vein Thrombosis with First-Line Therapy-Extended Treatment) were presented at the annual meeting of the American Society of Hematology meeting in Atlanta and published simultaneously in the New England Journal of  Medicine.

After completing a standard anticoagulation regimen for 6-12 months, 2,486 VTE patients were randomized to either placebo or apixaban (2.5 or 5 mg twice daily) for an additional 12 months. At both doses, apixaban treatment was associated with a large reduction in clinical events and no increase in major bleeding events.

The primary endpoint, the composite of death or symptomatic recurrent VTE, was significantly reduced in the apixaban groups, from  11.6% in the placebo group to 3.8% in the low-dose apixaban and 4.2% in the high-dose apixaban groups (p<0.001 for both comparisons).

There were very few major bleeding events: 4 (0.5%) in the placebo group, 2 (0.2%) in the low dose apixaban group and 1 ((0.1%) in the high dose apixaban group. Clinically relevant non-major bleeds occurred in 2.3% of the placebo group, 3% of the low dose apixaban group, and 4.2% of the high dose apixaban group.

The investigators concluded that the results of the study “provide a rationale for continuing anticoagulation therapy” in VTE patients for whom there is uncertainty about the worth of continued anticoagulant therapy. They calculated that 14 patients would need to be treated to prevent one VTE case.