July 9, 2026 · Gut · DOI: 10.1136/gutjnl-2026-338800

Cross-definition GWAS of IBS in 2.8 million individuals reveals cardiometabolic and triglyceride-linked mechanisms

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The authors aimed to identify genetic risk factors and actionable mechanisms for irritable bowel syndrome (IBS) through a comprehensive genome-wide association study (GWAS) involving 2.8 million individuals. They found significant heritability primarily in individuals of European ancestry and established genetic correlations between IBS and various traits, particularly highlighting the role of triglyceride levels and cardiometabolic pathways. This study enhances the understanding of IBS genetics and suggests potential targets for clinical translation and intervention.

Biagio Di Lorenzo, Leticia Camargo Tavares, Cristian Díaz-Muñoz, Francisco Heredia-Fernández, Isotta Bozzarelli, Cristina Esteban Blanco, Zhe Wang, Roelof A J Smit, Ruth J F Loos, Jibril Hirbo, Nancy J Cox, Peter Straub, Marie-Julie Favé, Philip Awadalla, Nikita Pozdeyev, Christopher R Gignoux, Colorado Center for Personalized Medicine, Daniel F Gudbjartsson, Gudmar Thorleifsson, Ingileif Jonsdottir, Kari Stefansson, Erik Abner, Priit Palta, Estonian Biobank Research Team, Alexander T Williams, Kayesha Coley, Gerald Sze, Catherine John, Anne Richmond, Daniel McCartney, Caroline Hayward, Ashley J Mulford, Alan R Sanders, Raitis Peculis, Vita Rovite, Marija Simona Dombrovska, Mario Capasso, Valeria Lo Faro, Trishla Sinha, Esteban Alexander Lopera Maya, Alexandra Zhernakova, Lifelines Cohort, Ying Wang, Alicia Martin, Brett Vanderwerff, Sebastian Zöllner, Brian R Ferolito, Alexander C Pereira, John Michael Gaziano, Kelly Cho, Lanna Caruth, Lindsay Guare, Colleen M Kripke, Daniel J Rader, Shefali S Verma, Anurag Verma, Penn Medicine BioBank, Chadi Saad, Hamdi Mbarek, Pei-Yu Chao, Tzu-Ting Chen, Yen-Feng Lin, Yen-Chen Anne Feng, Prasanna K Challa, Hamed Khalili, Aristomo Andries, Eivind Ness-Jensen, Ben Michael Brumpton, Madhusudan Grover, FinnGen, Susanna Lemmelä, Serena Sanna, Ferdinando Bonfiglio, Mauro D'Amato

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