Harmony Biosciences Management, Inc.

This study looks at the safety of the drug pitolisant in 150 people with Prader-Willi syndrome who have already completed a related study. Participants will take pitolisant and be monitored for side effects. The goal is to see how safe the drug is for long-term use in this condit…

This study tests a drug called pitolisant to see if it can safely reduce severe daytime sleepiness in people with Prader-Willi syndrome, a genetic condition. About 65 participants aged 6 to 65 will receive either pitolisant or a placebo for 11 weeks, followed by an open-label pha…