RT Journal Article T1 TRAF1/C5 but not PTPRC variants are potential predictors of rheumatoid arthritis response to anti-tumor necrosis factor therapy. A1 Canhão, Helena A1 Rodrigues, Ana Maria A1 Santos, Maria José A1 Carmona-Fernandes, Diana A1 Bettencourt, Bruno F A1 Cui, Jing A1 Rocha, Fabiana L A1 Canas Silva, José A1 Polido-Pereira, Joaquim A1 Pereira Silva, José Alberto A1 Costa, José António A1 Araujo, Domingos A1 Silva, Cândida A1 Santos, Helena A1 Duarte, Cátia A1 Cáliz, Rafael A1 Filipescu, Ileana A1 Pimentel-Santos, Fernando A1 Branco, Jaime A1 Sainz, Juan A1 Plenge, Robert M A1 Solomon, Daniel H A1 Bruges-Armas, Jácome A1 Da Silva, José António P A1 Fonseca, João Eurico A1 Karlson, Elizabeth W K1 Antirreumáticos K1 Artritis reumatoide K1 Factor de necrosis tumoral alfa K1 Humanos K1 Factor 1 asociado a receptor de TNF K1 Modelos logísticos K1 Grupo de ascendencia continental europea K1 Alelos AB BACKGROUNDThe aim of our work was to replicate, in a Southern European population, the association reported in Northern populations between PTPRC locus and response to anti-tumor necrosis factor (anti-TNF) treatment in rheumatoid arthritis (RA). We also looked at associations between five RA risk alleles and treatment response.METHODSWe evaluated associations between anti-TNF treatment responses assessed by DAS28 change and by EULAR response at six months in 383 Portuguese patients. Univariate and multivariate linear and logistic regression analyses were performed. In a second step to confirm our findings, we pooled our population with 265 Spanish patients.RESULTSNo association was found between PTPRC rs10919563 allele and anti-TNF treatment response, neither in Portuguese modeling for several clinical variables nor in the overall population combining Portuguese and Spanish patients. The minor allele for RA susceptibility, rs3761847 SNP in TRAF1/C5 region, was associated with a poor response in linear and logistic univariate and multivariate regression analyses. No association was observed with the other allellic variants. Results were confirmed in the pooled analysis.CONCLUSIONThis study did not replicate the association between PTPRC and the response to anti-TNF treatment in our Southern European population. We found that TRAF1/C5 risk RA variants potentially influence anti-TNF treatment response. PB Hindawi Publishing Corporation YR 2015 FD 2015 LK http://hdl.handle.net/10668/2093 UL http://hdl.handle.net/10668/2093 LA en NO Canhão H, Rodrigues AM, Santos MJ, Carmona-Fernandes D, Bettencourt BF, Cui J, et al. TRAF1/C5 but not PTPRC variants are potential predictors of rheumatoid arthritis response to anti-tumor necrosis factor therapy. Biomed Res Int; 2015:490295 NO Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; DS RISalud RD Apr 5, 2025