Microbiome signatures linked to cancer and treatment adverse events in a real-world cohort.

Microbiome signatures associated with five cancer types reveal potential contributors to cancer development and treatment responses in a large real-world cohort.

• Why it matters: Understanding microbiome-cancer links is crucial for developing targeted diagnostics and therapies, but previous studies often overlooked comorbidities and cancer-specific factors, limiting their applicability.
• What they did: Analyzing 1,364 cancer patients and 287 controls, researchers used a framework to control for confounding variables, identifying 341 species linked to cancer across multiple types, and examining their roles in disease and treatment.
• The result: Findings include cancer-specific microbiome patterns, such as lower fecal bile acids in early-onset breast cancer and protective bacteria against chemotherapy side effects, paving the way for personalized microbiome-based interventions.