Priority Review for Jemperli sBLA

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FDA has accepted for priority review a GSK supplemental BLA for Jemperli (dostarlimab) for combination use with standard-of-care chemotherapy (carboplatin and paclitaxel) to expand treatment to all adult patients with primary advanced or recurrent endometrial cancer, including those with mismatch repair proficient/microsatellite stable tumors. Currently, the drug is approved for combination use with carboplatin and paclitaxel, followed by single agent treatment of adult patients with primary advanced or recurrent endometrial cancer that is either mismatch repair deficient or microsatellite instability-high. The user fee review action target date is 8/23.

The submission is based on data from the Phase 3 RUBY trial, which it met the  primary endpoints of investigator-assessed progression-free survival and overall survival, “demonstrating a statistically significant and clinically meaningful benefit in the overall population of patients treated with dostarlimab plus carboplatin-paclitaxel versus chemotherapy alone,” GSK says. “The safety and tolerability analysis from RUBY showed a safety profile for dostarlimab and carboplatin-paclitaxel that was generally consistent with the known safety profiles of the individual agents.”

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.

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