Keytruda ‘Positive’ Data in Cervical Cancer
Merck says its Keytruda (pembrolizumab) plus concurrent chemoradiotherapy reduced the risk of disease progression or death by 30% compared to concurrent chemoradiotherapy alone in treating newly diagnosed patients with high-risk locally advanced cervical cancer. The data come from the Phase 3 KEYNOTE A-18 trial, which is supporting a priority review for a supplemental BLA that is under review and has a 1/20/2024 review action target date, according to the company.
Merck notes that median progression-free survival (PFS) was not yet reached in either group. “The 24-month PFS rate was 67.8% for patients who received the Keytruda regimen compared to 57.3% for those who received concurrent chemoradiotherapy alone,” it says. “In addition to an improvement in PFS, a favorable trend in overall survival (OS), the trial’s other primary endpoint, was observed for the Keytruda regimen versus concurrent chemoradiotherapy alone (HR=0.73 [95% CI, 0.49-1.07]); with only 103 events across both groups, these OS data are not mature and did not reach statistical significance at the time of this interim analysis.”
The trial is continuing and OS follow-up is ongoing, according to Merck. Keytruda’s safety profile was consistent with that observed in previously reported studies, it says, adding that no new safety signals were identified.