Alkermes receives FDA Complete Response Letter related to ALKS 3831, a proposed treatment for schizophrenia and bipolar 1 disorder.

Alkermes plc announced that it received a Complete Response Letter (CRL) from regarding its New Drug Application (NDA) for ALKS 3831 (olanzapine/samidorphan) for the treatment of adults with schizophrenia and adults with bipolar I disorder. Following a remote review of manufacturing records, FDA stated that resolution of certain conditions related to the tablet coating process at the company's Wilmington, OH facility is required before ALKS 3831 may be approved. The CRL did not identify or raise any concerns about the clinical or non-clinical data in the NDA and the FDA has not asked Alkermes to complete any new clinical trials to support approval of the application. The observations noted in the CRL were specific to certain development batches of ALKS 3831. The company believes this issue has since been resolved and that sufficient data is available to address these observations. Alkermes is preparing those data for submission and plans to work closely with the Agency to resolve these items in a timely manner and complete labeling discussions for the application.