A global atlas of the gut virome reveals subtype-specific and functional alterations in irritable bowel syndrome.

A global atlas of the gut virome reveals subtype-specific and functional alterations in irritable bowel syndrome, with viral signatures distinguishing IBS subtypes and achieving an AUC of 0.92 for classification.

• Why it matters: Understanding the gut virome's role in IBS is crucial because it remains poorly characterized, especially across diverse populations and disease subtypes, limiting insights into its contribution to disease mechanisms and potential diagnostics.
• What they did: The study analyzed 1,104 samples from 11 cohorts across 10 regions using a standardized bioinformatic pipeline to identify viral taxa, functions, and correlations with clinical features, including psychological symptoms.
• The result: Findings show that the IBS gut virome varies by geography and subtype, is enriched in metabolic, virulence, and resistance genes, and viral profiles are linked to anxiety and depression, supporting its potential in precision medicine.