Results showed CNS target engagement with reduction in GCase substrate glucosylsphingosine (GluSph) in cerebrospinal fluid (CSF), a prespecified endpoint The reduction in GluSph in CSF, a first-ever observation following the administration of a GCase modulator to PD patients, suggests increased GCase activity in the brain, which is expected to impact the progression of Parkinson’s disease (PD) KOL event planned for early January to discuss the results; registration information herein BETHESDA, Md., Dec. 18, ...