RT Journal Article T1 Lack of validation of genetic variants associated with anti-tumor necrosis factor therapy response in rheumatoid arthritis: a genome-wide association study replication and meta-analysis. A1 Márquez, Ana A1 Ferreiro-Iglesias, Aida A1 Dávila-Fajardo, Cristina L A1 Montes, Ariana A1 Pascual-Salcedo, Dora A1 Perez-Pampin, Eva A1 Moreno-Ramos, Manuel J A1 García-Portales, Rosa A1 Navarro, Federico A1 Moreira, Virginia A1 Magro, César A1 Caliz, Rafael A1 Ferrer, Miguel Angel A1 Alegre-Sancho, Juan José A1 Joven, Beatriz A1 Carreira, Patricia A1 Balsa, Alejandro A1 Vasilopoulos, Yiannis A1 Sarafidou, Theologia A1 Cabeza-Barrera, José A1 Narvaez, Javier A1 Raya, Enrique A1 Cañete, Juan D A1 Fernández-Nebro, Antonio A1 Ordóñez, María del Carmen A1 de la Serna, Arturo R A1 Magallares, Berta A1 Gomez-Reino, Juan J A1 González, Antonio A1 Martín, Javier K1 Antirreumáticos K1 Artritis reumatoide K1 Estudio de asociación del genoma completo K1 Genotipo K1 Polimorfismo de nucleótido simple K1 Resultado del tratamiento K1 Factor de necrosis tumoral alfa AB INTRODUCTIONIn this study, our aim was to elucidate the role of four polymorphisms identified in a prior large genome-wide association study (GWAS) in which the investigators analyzed the responses of patients with rheumatoid arthritis (RA) to treatment with tumor necrosis factor inhibitors (TNFi). The authors of that study reported that the four genetic variants were significantly associated. However, none of the associations reached GWAS significance, and two subsequent studies failed to replicate these associations.METHODSThe four polymorphisms (rs12081765, rs1532269, rs17301249 and rs7305646) were genotyped in a total of 634 TNFi-treated RA patients of Spanish Caucasian origin. Four outcomes were evaluated: changes in the Disease Activity Score in 28 joints (DAS28) after 6 and 12 months of treatment and classification according to the European League Against Rheumatism (EULAR) response criteria at the same time points. Association with DAS28 changes was assessed by linear regression using an additive genetic model. Contingency tables of genotype and allele frequencies between EULAR responder and nonresponder patients were compared. In addition, we combined our data with those of previously reported studies in a meta-analysis including 2,998 RA patients.RESULTSNone of the four genetic variants showed an association with response to TNFi in any of the four outcomes analyzed in our Spanish patients. In addition, only rs1532269 yielded a suggestive association (P = 0.0033) with the response to TNFi when available data from previous studies were combined in the meta-analysis.CONCLUSIONOur data suggest that the rs12081765, rs1532269, rs17301249 and rs7305646 genetic variants do not have a role as genetic predictors of TNFi treatment outcomes. PB BioMed Central SN 1478-6354 YR 2014 FD 2014-03-11 LK http://hdl.handle.net/10668/2316 UL http://hdl.handle.net/10668/2316 LA en NO Márquez A, Ferreiro-Iglesias A, Dávila-Fajardo CL, Montes A, Pascual-Salcedo D, Perez-Pampin E, et al. Lack of validation of genetic variants associated with anti-tumor necrosis factor therapy response in rheumatoid arthritis: a genome-wide association study replication and meta-analysis. Arthritis Res. Ther. 2014; 16(2):R66 NO Journal Article; Meta-Analysis; Research Support, Non-U.S. Gov't; DS RISalud RD Apr 8, 2025