GSK Jemperli Trial Meets Endpoint
GSK says a Phase 3 trial evaluating its Jemperli (dostarlimab) in adult patients with primary advanced or recurrent endometrial cancer met its primary endpoint of overall survival (OS). The trial (RUBY/ENGOT-EN6/GOG3031/NSGO) is investigating dostarlimab plus standard-of-care chemotherapy (carboplatin and paclitaxel), followed by dostarlimab as a single agent, compared to placebo plus chemotherapy followed by placebo.
“A clinically meaningful OS benefit was observed in both prespecified subpopulations in the trial: mismatch repair deficient (dMMR)/microsatellite instability-high (MSI-H) and mismatch repair proficient (MMRp)/microsatellite stable (MSS) patient subgroups,” the company says. Previously, the trial met its other primary endpoint of progression-free survival, demonstrating a 72% and 36% reduction in the risk of disease progression or death observed in the studied population, it adds.
Jemperli is described as a programmed death receptor-1 (PD-1)-blocking antibody that binds to the PD-1 receptor and blocks its interaction with the PD-1 ligands PD-L1 and PD-L2. It is currently indicated in combination with carboplatin and paclitaxel, followed by single agent Jemperli for treating adult patients with primary advanced or recurrent endometrial cancer that is mismatch repair deficient.