Review Period Set for Opsumit

Federal Register Notice: FDA has determined the regulatory review period for Actelion Pharmaceuticals’ Opsumit (macitentan) is 1,935 days for extending a patent which claims the human drug product. Opsumit is indicated for treating pulmonary arterial hypertension to delay disease progression. To view this notice, click here.

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Guide on Biosimilar Postapproval Manufacturing Changes

FDA has released a final guidance entitled “Postapproval Manufacturing Changes to Biosimilar and Interchangeable Biosimilar Products — Questions and Answers.” The document explains how manufacturers should document and report changes to approved biosimilars, including changes involving manufacturing processes, production facilities, dosage forms and strengths. Regarding information required for postapproval manufacturing changes,