Sage Therapeutics, Inc. announced topline results from PRECEDENT, a double-blind, placebo-controlled Phase 2 study of the investigational oral medicine dalzanemdor (SAGE-718) in people with mild cognitive impairment (MCI) in Parkinson's Disease (PD). The Company expects the following milestones for the dalzanemdor (SAGE-718) Phase 2 clinical development program in 2024: Mid-2024: Report topline data from SURVEYOR Study in people with HD cognitive impairment; Late 2024: Report topline data of LIGHTWAVE Study in people with MCI and mild dementia in AD; Report topline data from DIMENSION Study in people with HD cognitive impaired.