FDA Lifts Clinical Hold on Hemophilia Drug
FDA has lifted a clinical hold on Alnylam Pharmaceuticals’ clinical studies with fitusiran, indicated for treating patients with hemophilia. Lifting the hold will allow trials to resume, including a Phase 2 open-label extension study and the ATLAS Phase 3 program, the company says.
Alnylam company says it and the agency have reached an agreement on new clinical risk mitigation measures, including protocol-specified guidelines and additional investigator and patient education concerning reduced doses of replacement factor or bypassing agent to treat any breakthrough bleeds in fitusiran studies.
Fitusiran is an investigational RNAi therapeutic targeting antithrombin (AT) for treating patients with hemophilia A and B. It is designed to lower levels of AT with the goal of promoting sufficient thrombin generation to restore hemostasis and prevent bleeding.