GSK's Jemperli Plus Chemo Combo Scores FDA Approval As First New Frontline Treatment For Certain Type Of Endometrial Cancer

The FDA approved GSK plc's GSK Jemperli (dostarlimab) in combination with carboplatin and paclitaxel, followed by Jemperli as a single agent for primary advanced or recurrent endometrial cancer that is mismatch repair deficient (dMMR), as determined by an FDA-approved test, or microsatellite instability-high (MSI-H)

The supplemental Biologics License Application (sBLA) supporting this new indication received Priority Review and was approved before the Prescription Drug User Fee Act action date.

The FDA approval is supported by interim analysis results from Part 1 of the RUBY/ENGOT-EN6/GOG3031/NSGO phase 3 trial, reflecting a robust median follow-up duration of ≥ 25 months. 

Also Read: GSK Says 'Excellent' Q2 Performance Boosted By Vaccine & HIV Drug Sales, Raises 2023 Outlook.

The trial met the primary endpoint of investigator-assessed progression-free survival (PFS), demonstrating a statistically significant and clinically meaningful benefit in patients treated with Jemperli plus carboplatin and paclitaxel in the dMMR/MSI-H population.

In the dMMR/MSI-H population, a 71% reduction in the risk of disease progression or death was observed. Part 1 of the RUBY trial continues to assess overall survival (OS) in the intent-to-treat (ITT) population, a dual-primary endpoint alongside investigator-assessed PFS. 

The sBLA supporting this new indication was reviewed under the FDA Oncology Center of Excellence Project Orbis Framework, which allowed for concurrent submission to and review by the U.S. and other international regulatory authorities.

Price Action: GSK shares are down 1.04% at $35.20 on the last check Tuesday.

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