RT Journal Article T1 Association between HLA DNA Variants and Long-Term Response to Anti-TNF Drugs in a Spanish Pediatric Inflammatory Bowel Disease Cohort A1 Salvador Martín, Sara A1 Zapata Cobo, Paula A1 Velasco, Marta A1 Palomino Pérez, Laura María A1 Clemente, Susana A1 Segarra, Oscar A1 Sánchez Sánchez, Cesar A1 Tolín, Mar A1 Moreno Álvarez, Ana A1 Fernández Lorenzo, Ana A1 Pérez Moneo, Begoña A1 Loverdos, Inés A1 Navas López, Victor Manuel A1 Millán Jiménez, Antonio A1 Magallares, Lorena A1 Torres Peral, Ricardo A1 García Romero, Ruth A1 Pujol Muncunill, Gemma A1 Merino Bohórquez, Vicente A1 Rodríguez, Alejandro A1 Salcedo, Enrique A1 López Cauce, Beatriz A1 Marín Jiménez, Ignacio A1 Menchén Viso, Luis Alberto A1 Laserna Mendieta, Emilio A1 Lucendo Villarín, Alfredo J. A1 Sanjurjo Sáez, María A1 López Fernández, Luis A. AB The genetic polymorphisms rs2395185 and rs2097432 in HLA genes have been associated with the response to anti-TNF treatment in inflammatory bowel disease (IBD). The aim was to analyze the association between these variants and the long-term response to anti-TNF drugs in pediatric IBD. We performed an observational, multicenter, ambispective study in which we selected 340 IBD patients under 18 years of age diagnosed with IBD and treated with anti-TNF drugs from a network of Spanish hospitals. Genotypes and failure of anti-TNF drugs were analyzed using Kaplan-Meier curves and Cox logistic regression. The homozygous G allele of rs2395185 and the C allele of rs2097432 were associated with impaired long-term response to anti-TNF drugs in children with IBD after 3 and 9 years of follow-up. Being a carrier of both polymorphisms increased the risk of anti-TNF failure. The SNP rs2395185 but not rs2097432 was associated with response to infliximab in adults with CD treated with infliximab but not in children after 3 or 9 years of follow-up. Conclusions: SNPs rs2395185 and rs2097432 were associated with a long-term response to anti-TNFs in IBD in Spanish children. Differences between adults and children were observed in patients diagnosed with CD and treated with infliximab. PB MDPI SN 1422-0067 YR 2023 FD 2023 LK https://hdl.handle.net/20.500.14352/72335 UL https://hdl.handle.net/20.500.14352/72335 LA eng NO This research was funded by Instituto de Salud Carlos III, grant number PI19/00792 (L.A.L.-F.) and Juan Rodes program JR19/00005 (E.L.-M.), by Instituto de Investigación Sanitaria Gregorio Marañón, grant number 2021-II-postdoc-01 (S.S.-M.), and by Consejería de Educación, Universidades, Ciencia y Portavocía Comunidad de Madrid, grant number PEJ-2021-AI/BMD-21866 (P.Z.-C.). The study was co-funded by the European Union. NO European Union NO Consejería de Educación, Universidades, Ciencia y Portavocía Comunidad de Madrid NO Instituto de Salud Carlos III NO Juan Rodes program NO Instituto de Investigación Sanitaria Gregorio Marañón DS Docta Complutense RD 6 may 2024