Commentary

Video

Steven W. Pipe, MD: Fitusiran With Anti-Thrombin Modulation Yields Effective Bleed Control, Reduces Infusions for Hemophilia

Pipe discussed findings from the open-label extension of the ATLAS studies at ASH 2024.

Fitusiran prophylaxis, in combination with appropriate bleed management guidelines, allowed fewer infusions and lower doses of clotting factor concentrates (CFC) or bypassing agents (BPAs) to treat breakthrough bleeding in people with hemophilia A or B.

These findings, from the ATLAS OLE study, were presented at the 66th American Society of Hematology (ASH) Annual Meeting and Exposition, held December 7-10, 2024, in San Diego, California, by Steven W. Pipe, MD, Professor and Laurence A. Boxer Research Professor of Pediatrics and Professor of Pathology, University of Michigan and CS Mott Children’s Hospital, Ann Arbor, Michigan.

“Fitusiran is a highly effective prophylactic agent. The modulation of thrombin generation allows us to achieve effective bleed control with substantially lower doses of factor and bypassing agents, as well as fewer infusions. And this is just an overall better patient experience,” Pipe told HCPLive® during the meeting.

Pipe and colleagues found that doses per bleed for participants without inhibitors and with inhibitors was reduced during fitusiran prophylaxis as compared to the CFC/BPA prophylaxis period, and overall, participants required fewer infusions for the management of breakthrough bleeds with fitusiran antithrombin-based dosing regimen (with inhibitors, 57; without inhibitors, 148) versus those who received CFC (n = 189) or BPA (n = 465) prophylaxis.

REFERENCE
Pipe SW, Kavakli K, Matsushita T, et al. Reduced Doses of Factor Concentrates and Bypassing Agents to Treat Breakthrough Bleeds in Patients with Hemophilia A and B on Fitusiran Antithrombin-Based Dosing Regimen: ATLAS-OLE. Presented at: ASH Annual meeting; December 7-10; San Diego, California. Abstract 128.
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