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"bioproject": "PRJNA782662",
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"last-update": "2023-09-03T01:59:37",
"secondary-accession": "SRP347299",
"centre-name": "University of Trieste",
"public-release-date": null,
"study-abstract": "Aside from PD-L1 expression, biomarkers of response to immune checkpoint inhibitors (ICI) in non-small cell lung cancer (NSCLC) are needed. In a previous retrospective analysis, we documented that fecal Akkermansia muciniphila (Akk) associated with clinical benefit of ICI in NSCLC and kidney cancer patients. In the current study, we performed shotgun metagenomics-based microbiome profiling in a large cohort of advanced NSCLC patients (n=338) treated with first or second line ICI, to prospectively validate the predictive value of fecal Akk. Baseline stool Akk was associated with increased objective response rates and overall survival in multivariate analyses, independent of PD-L1 expression, antibiotics and performance status. Intestinal Akk was accompanied by a richer commensalism, including Eubacterium hallii and Bifidobacterium adolescentis, and a more inflamed tumor microenvironment in a subset of patients. However, antibiotic use (20% of cases) coincided with a relative dominance of Akk above 4.8% accompanied with the genus Clostridium, both associated with resistance to ICI. Our study shows significant differences in relative abundance of Akk that may represent potential biomarkers to refine patient stratification in future studies.",
"study-name": "Intestinal Akkermansia muciniphila predicts clinical response to PD-1 blockade in advanced non-small cell lung cancer patients.",
"data-origination": "HARVESTED"
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