ACADIA Pharmaceuticals Inc. (ACAD) Nears Key Phase 3 Readout in Prader-Willi Syndrome

Company Overview - ACADIA Pharmaceuticals Inc. is a biopharmaceutical company focusing on therapies for central nervous system disorders and rare diseases [2] - Key approved products include NUPLAZID for Parkinson's disease psychosis and DAYBUE for Rett syndrome, both showing commercial growth [2] Financial Performance - In Q2 2025, NUPLAZID net sales increased by 7% year-over-year to $168.5 million, while DAYBUE sales grew by 14% to $96.1 million, reaching nearly 1,000 unique patients in the U.S. [2] Pipeline Development - A significant catalyst for 2025 is the upcoming Phase 3 readout of the COMPASS trial for ACP-101 in Prader-Willi Syndrome, with top-line results expected in early Q4 [3] - Positive trial outcomes could lead to a New Drug Application filing in Q1 2026 and potential approval by Q3 2026, expanding the company's pipeline into rare neurodevelopmental disorders [3] Research and Development Initiatives - The company is advancing multiple programs targeting neuropsychiatric symptoms and rare neurological diseases, including Alzheimer's disease and psychosis [4] - During its R&D Day in June 2025, ACADIA unveiled nine disclosed programs, with seven planned to enter Phase 2 or 3 stages from 2025 to 2026, and five anticipated readouts through 2027 [4] Market Position and Legal Developments - Recent patent litigation wins have secured market exclusivity for NUPLAZID through 2030 and extended formulations through 2038, providing stability for the commercial franchise [5] - With strong product momentum and a deepening pipeline, ACADIA is positioned for continued growth in CNS and rare disease therapies [5]