Pyrukynd sNDA Extended Due to REMS Review

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FDA has extended by three months its review of Agios Pharmaceuticals’ supplemental NDA seeking to expand the use of Pyrukynd (mitapivat) to adults with thalassemia. The extension, which was triggered by a Risk Evaluation and Mitigation Strategy (REMS) proposal that the company recently submitted, pushes back the user fee review action target date to 12/7, according to Agios. The REMS is intended to address potential risks of liver injury noted in the sNDA, it adds.

The application is supported by data from two Phase 3 studies: ENERGIZE, which tested the drug in adults with non-transfusion-dependent thalassemia, and ENERGIZE-T, which evaluated it in transfusion-dependent patients. Both trials were randomized, placebo-controlled, and conducted globally.

Thalassemia is described as a rare inherited blood disorder that disrupts hemoglobin production, leading to anemia, fatigue, and severe complications. Pyrukynd is currently approved in the U.S. for hemolytic anemia in adults with pyruvate kinase deficiency. It works by activating pyruvate kinase, a key enzyme in red blood cell metabolism, the company says.

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