FDA Panel Shoots Down Acadia Alzheimer’s sNDA
FDA’s Psychopharmacologic Drugs Advisory Committee has voted 9-3 to not recommend approval of an Acadia Pharmaceutical resubmitted sNDA for Nuplazid (pimavanserin) for an indication to treat hallucinations and delusions associated with Alzheimer’s disease psychosis. The panel members did not find the company’s data sufficient to approve the drug in this patient population, with some recommending a randomized study in Alzheimer’s patients. Acadia had studied the drug in Parkinson’s and Alzheimer’s patients with psychosis, but some panel members suggested the Parkinson’s patients may have skewed results.
FDA 4/2021 issued Acadia a complete response letter (see story) on the earlier sNDA, indicating that the submission could not be approved in its then-present form. At the time, the agency cited a lack of statistical significance in some of the subgroups of dementia, and insufficient numbers of patients with certain less-common dementia subtypes as lack of substantial evidence of effectiveness to support approval, according to the company.