SynthesisWorld journal of surgical oncology2026
Predictive value of PD-L1 expression and dMMR/pMMR status for immune checkpoint inhibitor combined with chemotherapy in advanced/recurrent endometrial cancer: a meta-analysis.
Synthesis in World journal of surgical oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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5 authors.
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Abstract
backgroundAdvanced/recurrent endometrial cancer (EC) poses a significant therapeutic challenge. Immune checkpoint inhibitor (ICI) combined with chemotherapy (CT) represents a promising first-line approach, yet the predictive value of deficient/proficient mismatch repair (dMMR/pMMR) status and PD-L1 expression in therapeutic efficacy remains unclear. This study aimed to systematically evaluate the predictive value of dMMR/pMMR status and PD-L1 expression for progression-free survival (PFS) and overall survival (OS) in patients with advanced/recurrent EC treated with ICI + CT.
methodsA systematic review and meta-analysis of randomized controlled trials (RCTs) from four databases (PubMed, Embase, Cochrane Library, Web of Science) was performed. PFS and OS were synthesized as hazard ratios (HRs) with 95% confidence intervals (CIs) using Review Manager 5.4.
resultsFive RCTs (2,707 patients) were included in this meta-analysis. Compared with CT alone, ICI + CT significantly improved PFS in all subgroups: dMMR (HR = 0.36, 95% CI:0.28–0.45, P < 0.00001), pMMR (HR = 0.78, 95% CI:0.70–0.87, P = 0.009), PD-L1-positive (HR = 0.52, 95% CI:0.38–0.70, P < 0.0001), and PD-L1-negative (HR = 0.66, 95% CI:0.44–0.98, P = 0.04). For OS, only the dMMR subgroup showed a significant benefit (HR = 0.41, 95% CI:0.28–0.61, P < 0.00001), with no improvement observed in pMMR patients (HR = 0.88, 95% CI:0.73–1.07, P = 0.20).
conclusionFor advanced/recurrent EC, ICI + CT enhanced PFS across dMMR/pMMR and PD-L1 expression subgroups, with OS benefit apparently confined to dMMR patients and not observed in pMMR patients. These results present the clinically valuable predictive value of MMR status for ICI + CT efficacy and suggest that PD-L1expression did not influence the benefit of ICI on patient PFS, which deserve high clinical attention.
trial registrationhttps://inplasy.com/inplasy-2026-03-0015/ , identifier INPLASY202630015.
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