TY - JOUR TI - Prediagnostic alterations in circulating bile acid profiles in the development of hepatocellular carcinoma AU - Stepien, Magdalena AU - Lopez-Nogueroles, Marina AU - Lahoz, Agustin and AU - Kuehn, Tilman AU - Perlemuter, Gabriel AU - Voican, Cosmin AU - Ciocan, AU - Dragos AU - Boutron-Ruault, Marie-Christine AU - Jansen, Eugene and AU - Viallon, Vivian AU - Leitzmann, Michael AU - Tjonneland, Anne AU - Severi, AU - Gianluca AU - Mancini, Francesca Romana AU - Dong, Catherine AU - Kaaks, AU - Rudolf AU - Fortner, Renee Turzanski AU - Bergmann, Manuela M. AU - Boeing, AU - Heiner AU - Trichopoulou, Antonia AU - Karakatsani, Anna AU - Peppa, Eleni AU - and Palli, Domenico AU - Krogh, Vittorio AU - Tumino, Rosario and AU - Sacerdote, Carlotta AU - Panico, Salvatore AU - Bueno-de-Mesquita, H. Bas AU - and Skeie, Guri AU - Merino, Susana AU - Ros, Raul Zamora AU - Sanchez, AU - Maria Jose AU - Amiano, Pilar AU - Huerta, Jose Ma AU - Barricarte, Aurelio AU - and Sjoeberg, Klas AU - Ohlsson, Bodil AU - Nystroem, Hanna AU - Werner, AU - Marten AU - Perez-Cornago, Aurora AU - Schmidt, Julie A. AU - Freisling, AU - Heinz AU - Scalbert, Augustin AU - Weiderpass, Elisabete AU - Christakoudi, AU - Sofia AU - Gunter, Marc J. AU - Jenab, Mazda JO - International Journal of Cancer PY - 2022 VL - 150 TODO - 8 SP - 1255-1268 PB - Wiley SN - 0020-7136 TODO - 10.1002/ijc.33885 TODO - bile acid metabolism; biomarkers; cancer prevention; hepatocellular carcinoma; obesity TODO - Bile acids (BAs) play different roles in cancer development. Some are carcinogenic and BA signaling is also involved in various metabolic, inflammatory and immune-related processes. The liver is the primary site of BA synthesis. Liver dysfunction and microbiome compositional changes, such as during hepatocellular carcinoma (HCC) development, may modulate BA metabolism increasing concentration of carcinogenic BAs. Observations from prospective cohorts are sparse. We conducted a study (233 HCC case-control pairs) nested within a large observational prospective cohort with blood samples taken at recruitment when healthy with follow-up over time for later cancer development. A targeted metabolomics method was used to quantify 17 BAs (primary/secondary/tertiary; conjugated/unconjugated) in prediagnostic plasma. Odd ratios (OR) for HCC risk associations were calculated by multivariable conditional logistic regression models. Positive HCC risk associations were observed for the molar sum of all BAs (ORdoubling = 2.30, 95% confidence intervals [CI]: 1.76-3.00), and choline- and taurine-conjugated BAs. Relative concentrations of BAs showed positive HCC risk associations for glycoholic acid and most taurine-conjugated BAs. We observe an association between increased HCC risk and higher levels of major circulating BAs, from several years prior to tumor diagnosis and after multivariable adjustment for confounders and liver functionality. Increase in BA concentration is accompanied by a shift in BA profile toward higher proportions of taurine-conjugated BAs, indicating early alterations of BA metabolism with HCC development. Future studies are needed to assess BA profiles for improved stratification of patients at high HCC risk and to determine whether supplementation with certain BAs may ameliorate liver dysfunction. ER -