Here is the drug trial results for EMERGENT-2 which was one of the two phase-3 trials that lead to the approval.
I think its striking that the trial is only 5-weeks long and this medication gets approval.
> Results from additional trials, including the identical EMERGENT-3 trial and the 52-week, open-label EMERGENT-4 and EMERGENT-5 trials, will provide additional information on the efficacy and safety of KarXT in people with schizophrenia.
EMERGENT-4 and EMERGENT-5 concluded last year [1], which was the reason for the approval. EMERGENT-2 was mostly a milestone Karuna Therapeutics used to get enough funding for the rest of the trials and inform their design.
[1] https://news.bms.com/news/details/2024/Bristol-Myers-Squibb-...