RT Journal Article T1 Genome-wide pathway analysis identifies VEGF pathway association with oral ulceration in systemic lupus erythematosus. A1 Aterido, Adria A1 Julia, Antonio A1 Carreira, Patricia A1 Blanco, Ricardo A1 Lopez-Longo, Jose Javier A1 Venegas, Jose Javier Perez A1 Olivé, Alex A1 Andreu, Jose Luis A1 Aguirre-Zamorano, Maria Angeles A1 Vela, Paloma A1 Nolla, Joan M A1 Marenco-de la Fuente, Jose Luis A1 Zea, Antonio A1 Pego, Jose Maria A1 Freire, Mercedes A1 Diez, Elvira A1 Lopez-Lasanta, Maria A1 Lopez-Corbeto, Mireia A1 Palau, Nuria A1 Tortosa, Raul A1 Gelpi, Josep Lluis A1 Absher, Devin A1 Myers, Richard M A1 Fernandez-Nebro, Antonio A1 Marsal, Sara K1 Clinical phenotypes K1 Genetics K1 Genome-wide pathway analysis K1 Oral ulceration K1 Systemic lupus erythematosus K1 Área de Gestión Sanitaria de Jerez, Costa Noroeste y Sierra de Cádiz K1 Área de Gestión Sanitaria Sur de Sevilla AB Systemic lupus erythematosus (SLE) is a genetically complex rheumatic disease characterized by heterogeneous clinical manifestations of unknown etiology. Recent studies have suggested the existence of a genetic basis for SLE heterogeneity. The objective of the present study was to identify new genetic variation associated with the clinically relevant phenotypes in SLE. A two-stage pathway-based approach was used to identify the genetic variation associated with the main clinical phenotypes in SLE. In the discovery stage, 482 SLE patients were genotyped using Illumina Human Quad610 microarrays. Association between 798 reference genetic pathways from the Molecular Signatures Database and 11 SLE phenotypes was tested using the set-based method implemented in PLINK software. Pathways significantly associated after multiple test correction were subsequently tested for replication in an independent cohort of 425 SLE patients. Using an in silico approach, we analyzed the functional effects of common SLE therapies on the replicated genetic pathways. The association of known SLE risk variants with the development of the clinical phenotypes was also analyzed. In the discovery stage, we found a significant association between the vascular endothelial growth factor (VEGF) pathway and oral ulceration (P value for false discovery rate (P FDR)  The present study has identified VEGF genetic pathway association with the risk of oral ulceration in SLE. New therapies targeting the VEGF pathway could be more effective in reducing the severity of this phenotype. These findings represent a first step towards the understanding of the genetic basis of phenotype heterogeneity in SLE. PB BioMed Central YR 2017 FD 2017-06-15 LK http://hdl.handle.net/10668/11306 UL http://hdl.handle.net/10668/11306 LA en NO Aterido A, Julià A, Carreira P, Blanco R, López-Longo JJ, Venegas JJP, et al. Genome-wide pathway analysis identifies VEGF pathway association with oral ulceration in systemic lupus erythematosus. Arthritis Res Ther. 2017 Jun 15;19(1):138 DS RISalud RD Apr 18, 2025