RT Journal Article T1 A Genome-Wide Association Study on Liver Stiffness Changes during Hepatitis C Virus Infection Cure. A1 Corma-Gómez, Anaïs A1 Macías, Juan A1 Rivero, Antonio A1 Rivero-Juarez, Antonio A1 de Los Santos, Ignacio A1 Reus-Bañuls, Sergio A1 Morano, Luis A1 Merino, Dolores A1 Palacios, Rosario A1 Galera, Carlos A1 Fernández-Fuertes, Marta A1 González-Serna, Alejandro A1 de Rojas, Itziar A1 Ruiz, Agustín A1 Sáez, María E A1 Real, Luis M A1 Pineda, Juan A K1 GWAS K1 direct-acting antivirals K1 hepatitis C virus infection K1 liver stiffness K1 polymorphisms K1 sustained virological response AB Liver stiffness (LS) at sustained virological response (SVR) after direct-acting antivirals (DAA)-based therapy is a predictor of liver events in hepatitis C virus (HCV)-infected patients. The study aim was to identify genetic factors associated with LS changes from the moment of starting anti-HCV therapy to SVR. This prospective study included HCV-infected patients from the GEHEP-011 cohort who achieved SVR with DAA-based therapy, with LS pre-treatment ≥ 9.5 kPa and LS measurement available at SVR. Plink and Magma software were used to carry out genome-wide single-nucleotide polymorphism (SNP)-based and gene-based association analyses, respectively. The ShinyGO application was used for exploring enrichment in Gene Ontology (GO) categories for biological processes. Overall, 242 patients were included. Median (quartile 1, quartile 3) LS values at pre-treatment and at SVR were 16.8 (12, 28) kPa and 12.0 (8.5, 19.3) kPa, respectively. Thirty-five SNPs and three genes reached suggestive association with LS changes from the moment of starting anti-HCV therapy to SVR. GO categories related to DNA packaging complex, DNA conformation change, chromosome organization and chromatin organization were significantly enriched. Our study reports possible genetic factors associated with LS changes during HCV-infection cure. In addition, our results suggest that processes related to DNA conformation are also involved in these changes. SN 2075-4418 YR 2021 FD 2021-08-20 LK https://hdl.handle.net/10668/27165 UL https://hdl.handle.net/10668/27165 LA en DS RISalud RD Feb 24, 2025