Incorporation of anti-PD1 or anti PD-L1 agents to platinum-based chemotherapy for the primary treatment of advanced or recurrent endometrial cancer. A meta-analysis
Cancer treatment reviews · Apr 2024 · meta-analysis of randomized controlled trials (first-line ICI + platinum-based chemotherapy vs chemotherapy alone)
This meta-analysis pooled five randomized trials (2456 patients) comparing addition of anti-PD-1 or anti-PD-L1 agents to standard platinum-based chemotherapy versus chemotherapy alone as first-line treatment for advanced or recurrent endometrial cancer. Adding immune checkpoint inhibitors improved progression-free survival overall and especially in tumors with deficient mismatch repair (dMMR); in mismatch repair–proficient (pMMR) tumors a statistically significant PFS benefit was reported only with anti-PD-1 agents, not anti-PD-L1 agents. The analysis reports PFS outcomes; the impact on overall survival remains to be clarified.
Reported effects: included patients 2456, n=2456 · pooled HR overall 0.63 [0.52–0.76], p <.001, n=2456 · +5 more
Studied with: carboplatin-paclitaxel chemotherapy.
Key findings
- Five randomized trials comprising 2456 patients (1308 received ICIs + chemotherapy and 1148 chemotherapy alone) were included.
- Addition of ICIs to chemotherapy improved PFS in the overall population (pooled HR, 0.63; 95% CI, 0.52–0.76; P < .001).
- In the dMMR subgroup the pooled PFS benefit was larger (pooled HR, 0.34; 95% CI, 0.27–0.44; P < .001).
- In dMMR tumors benefit was seen with both PD-L1 and PD-1 inhibitors (pooled HRs 0.39, 95% CI 0.28–0.55 and 0.34, 95% CI 0.27–0.44, respectively; both P < .001).
- In pMMR patients a statistically significant PFS benefit was observed only with anti-PD-1 agents (anti-PD-1: HR 0.64, 95% CI 0.46–0.90, P = .010) but not with anti-PD-L1 agents (anti-PD-L1: HR 0.87, 95% CI 0.73–1.03, P = .104).
AI summary of the abstract, human-reviewed · Jun 2026. Describes what this study reported, not medical advice. View on PubMed