Gut microbial signatures and immunotherapy outcomes in NSCLC and melanoma: a systematic review and meta-analysis.

BMC Cancer · 2026 · PMC12980955 · PMID 41723389

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did not reach statistical significanceno p-value reported

Conversely, a high abundance of the genus Bacteroides was associated with a trend towards worse PFS, although this did not reach statistical significance in our meta-analysis (pooled HR 1.25, 95% CI 0.95–1.64) [ 16 ].

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