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KEYNOTE-991: Pembrolizumab Does Not Improve Outcomes in Metastatic Hormone-Sensitive Prostate Cancer—A Phase III Clinical Trial Analysis

MedXY Editorial Team•Oct 2, 2025•Clinical Updates
Enzalutamidepembrolizumabprostate cancer

Highlights

  • Pembrolizumab added to enzalutamide and ADT did not improve radiographic progression-free or overall survival in mHSPC patients.
  • Pembrolizumab combination led to higher rates of grade ≥3 and serious adverse events compared to placebo.
  • Rash was notably more common with pembrolizumab addition.
  • KEYNOTE-991 was stopped early for futility, impacting future immunotherapy strategies for mHSPC.

Study Background and Disease Burden

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This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

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