Joint Panel Backs Alkermes’ Antipsychotic
FDA’s Psychopharmacologic Drugs Advisory Committee and its Drug Safety and Risk Management Advisory Committee have voted to support approval of an Alkermes NDA for ALKS 3831 (olanzapine/samidorphan), an oral atypical antipsychotic drug candidate for treating adults with schizophrenia and for treating adults with bipolar 1 disorder. The committees also jointly voted that ALKS 3831 meaningfully mitigates olanzapine-associated weight gain (16 yes, 1 no) and that its safety profile has been adequately characterized (13 yes, 3 no, 1 abstention).
Additionally, panel members voted (11 yes, 6 no) that labeling is sufficient to mitigate the risks related to samidorphan’s opioid antagonist action. Alkermes’ says its proposed labeling contraindicates the drug’s use in patients who are opioid-dependent or chronically using opioids, and the company has proposed a comprehensive education plan, which includes dissemination of information to potential prescribers and pharmacists.
Alkermes’s NDA submission is based on data from 27 clinical studies, including 18 studies evaluating ALKS 3831 and nine studies evaluating samidorphan alone. The drug user fee review action target date is 11/15.