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Tumour Colonisation of Is Associated with Decreased Survival in Colorectal Cancer Patients

Overview
Journal Cancers (Basel)
Publisher MDPI
Specialty Oncology
Date 2022 Dec 11
PMID 36497419
Authors
Affiliations
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Abstract

Increasing evidence suggests that the gut microbiota may impact colorectal cancer (CRC) development and progression. In this study, the tumour colonisation of two CRC-associated bacteria, and , was studied in relation to patient survival in a cohort of 257 CRC patients. Colonisation of and was analysed in fresh frozen tumour tissue (n = 112) and in faeces (n = 250) by qPCR. When analysing tumour tissues, both and were found to be associated with decreased five-year cancer-specific survival, an association that remained significant in multivariable analysis for . Furthermore, we found significant associations of high levels of and with tumour molecular characteristics, i.e., tumours mutated in , and tumours of the MSI subtype. The analysis of faecal samples showed weaker associations with prognosis and tumour molecular characteristics. In conclusion, our findings support a novel association of tumour colonisation of with decreased patient survival. A better understanding of the role of the gut microbiota in CRC might contribute to the advancement of prognostic tools and new targets for therapy.

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