Bristol Myers Squibb announces topline results from Phase 3 ARISE trial evaluating Cobenfy as an adjunctive treatment in schizophrenia
Bristol Myers Squibb reported topline results from the Phase 3 ARISE trial evaluating Cobenfy (xanomeline and trospium chloride) as an adjunctive treatment to atypical antipsychotics in adults with inadequately controlled schizophrenia symptoms. The primary endpoint was not met.
In the trial, adjunctive treatment with Cobenfy showed a 2.0-point reduction in the PANSS total score at Week 6 compared to placebo plus an atypical antipsychotic (p = 0.11), falling short of statistical significance. However, numerical improvements were observed, and safety and tolerability were consistent with earlier trials.
A post-hoc subgroup analysis revealed a statistically significant benefit in patients using non-risperidone background therapies, with a 3.4-point difference in PANSS score (p = 0.03), but no benefit in the risperidone subgroup.
The key secondary endpoints, PSP and CGI-S, also showed numerical but not statistically significant differences.
- PSP score change: -0.6 difference (p = 0.52)
- CGI-S score change: -0.1 difference (p = 0.14)
Cobenfy was generally well-tolerated, with a safety profile consistent with prior studies. The company plans to further evaluate the data and consult with regulators on potential next steps.
The ARISE trial enrolled adults aged 18 to 65 with schizophrenia who were already on a stable antipsychotic regimen. Eligible participants are offered the opportunity to continue in a 52-week open-label extension study.
Cobenfy combines xanomeline, a muscarinic receptor agonist, and trospium chloride, a peripheral muscarinic antagonist. It is approved in the U.S. as a monotherapy for schizophrenia and is also being investigated for conditions such as Alzheimer’s disease, bipolar disorder, and autism spectrum disorder.
Cobenfy carries warnings related to urinary and gastric retention, liver and biliary disorders, narrow-angle glaucoma, and anticholinergic CNS effects. It is contraindicated in patients with moderate/severe hepatic or renal impairment and those with a history of angioedema from its components.
Bristol Myers Squibb plans to present full ARISE trial data at a future medical conference.