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In KEYNOTE-C93, 299 people with mismatch repair-deficient advanced endometrial cancer were randomised to pembrolizumab or to carboplatin plus paclitaxel. Median progression-free survival was 38.2 versus 8.4 months.
On 16 October the FDA converted pembrolizumab's accelerated approval for mutation-heavy solid tumours to full approval, but narrowed it: the qualifying threshold moved from 10 to 13 mutations per megabase.
LITESPARK-022 cut the risk of recurrence by 28% when belzutifan was added to pembrolizumab after surgery. Survival was no different, and severe side effects nearly doubled.
Adding pembrolizumab plus maintenance olaparib to first-line chemotherapy improved progression-free survival — but pembrolizumab added without olaparib did nothing at all.
In HERIZON-GEA-01, zanidatamab plus chemotherapy raised median progression-free survival to 12.4 months from 8.1 with trastuzumab. A clear survival gain came only when tislelizumab was added.
Moderna and Merck's personalized vaccine slowed melanoma's return when added to Keytruda. It is the first mRNA cancer vaccine to succeed at scale — and the first real test of a decade-old idea.
The final HARMONi-A analysis reports a 2.7-month gain in median overall survival — 16.8 versus 14.1 months — for the PD-1/VEGF bispecific added to chemotherapy in a China-only phase 3 trial.
In KEYNOTE-B15/EV-304, perioperative enfortumab vedotin plus pembrolizumab lifted two-year event-free survival to 79.4% from 66.2% against standard cisplatin-based chemotherapy in patients fit for it.
In KEYNOTE-905/EV-303, adding enfortumab vedotin and pembrolizumab to surgery lifted two-year event-free survival to 74.7% from 39.4%. Serious side effects were common.
In the phase 3 ASCENT-04 trial, sacituzumab govitecan with pembrolizumab lifted median progression-free survival to 11.2 months from 7.8 in PD-L1-positive disease. Survival data are immature.