The gut microbiome is associated with disease‐free survival in stage I–III colorectal cancer patients

作者：Doratha Armenthus Byrd, Victoria Damerell, Maria F. Gomez, Stephanie Hogue, Tengda Lin, Jennifer Ose, Caroline Himbert, Mmadili N. Ilozumba, Christoph Kahlert, David Shibata, Adetunji T. Toriola, Christopher I. Li, Jane C. Figueiredo, W. Zac Stephens, Christy A. Warby, Sheetal S. Hardikar, Erin M. Siegel, June L. Round, Cornelia M. Ulrich, Biljana Gigic · 发表于：International Journal of Cancer · 年份：2025 · DOI：10.1002/ijc.35342 · 被引用次数：13 · 研究领域：Gut microbiota and health、Colorectal Cancer Screening and Detection、Enhanced Recovery After Surgery

Abstract Colorectal cancer (CRC) is the second overall leading cause of cancer death in the United States, with recurrence being a frequent cause of mortality. Approaches to improve disease‐free survival (DFS) are urgently needed. The gut microbiome, reflected in fecal samples, is likely mechanistically linked to CRC progression and may serve as a non‐invasive biomarker. Accordingly, we leveraged baseline fecal samples from N = 166 stage I–III CRC patients in the ColoCare Study, a prospective cohort of newly diagnosed CRC patients. We sequenced the V3 and V4 regions of the 16S rRNA gene to characterize fecal bacteria. We calculated estimates of alpha diversity, beta diversity, and a priori‐ and exploratory‐selected bacterial presence/absence and relative abundance. Associations of microbial metrics with DFS were estimated using multivariable Cox proportional hazards models. We found that alpha diversity was strongly associated with improved DFS, most strongly among rectal cancer patients (Shannon HRrectum = 0.40 95% CI = 0.19, 0.87; p = .02). Overall microbiome composition differences (beta diversity), as characterized by principal coordinate axes, were statistically significantly associated with DFS. Peptostreptococcus was statistically significantly associated with worse DFS (HR = 1.62, 95% CI = 1.13, 2.31; p = .01 per 1‐SD) and Order Clostridiales was associated with improved DFS (HR = 0.62, 95% CI = 0.43–0.88; p = .01 per 1‐SD). In exploratory analyses, Coprococcus and Ro...