PMID- 28698626 OWN - NLM STAT- MEDLINE DCOM- 20190128 LR - 20190128 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 7 IP - 1 DP - 2017 Jul 11 TI - A genome-wide association study suggests the HLA Class II region as the major susceptibility locus for IgA vasculitis. PG - 5088 LID - 10.1038/s41598-017-03915-2 [doi] LID - 5088 AB - The genetic component of Immunoglobulin-A (IgA) vasculitis is still far to be elucidated. To increase the current knowledge on the genetic component of this vasculitis we performed the first genome-wide association study (GWAS) on this condition. 308 IgA vasculitis patients and 1,018 healthy controls from Spain were genotyped by Illumina HumanCore BeadChips. Imputation of GWAS data was performed using the 1000 Genomes Project Phase III dataset as reference panel. After quality control filters and GWAS imputation, 285 patients and 1,006 controls remained in the datasets and were included in further analysis. Additionally, the human leukocyte antigen (HLA) region was comprehensively studied by imputing classical alleles and polymorphic amino acid positions. A linkage disequilibrium block of polymorphisms located in the HLA class II region surpassed the genome-wide level of significance (OR = 0.56, 95% CI = 0.46-0.68). Although no polymorphic amino acid positions were associated at the genome-wide level of significance, P-values of potential relevance were observed for the positions 13 and 11 of HLA-DRB1 (P = 6.67E-05, P = 1.88E-05, respectively). Outside the HLA, potential associations were detected, but none of them were close to the statistical significance. In conclusion, our study suggests that IgA vasculitis is an archetypal HLA class II disease. FAU - Lopez-Mejias, Raquel AU - Lopez-Mejias R AUID- ORCID: 0000-0003-0548-2689 AD - Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Spain. rlopezmejias78@gmail.com. FAU - Carmona, F David AU - Carmona FD AD - Instituto de Parasitologia y Biomedicina 'Lopez-Neyra', CSIC, PTS Granada, Granada, Spain. AD - Departamento de Genetica e Instituto de Biotecnologia, Universidad de Granada, Granada, Spain. FAU - Castaneda, Santos AU - Castaneda S AD - Rheumatology Department, Hospital Universitario La Princesa, IIS-IPrincesa, Madrid, Spain. FAU - Genre, Fernanda AU - Genre F AD - Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Spain. FAU - Remuzgo-Martinez, Sara AU - Remuzgo-Martinez S AD - Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Spain. FAU - Sevilla-Perez, Belen AU - Sevilla-Perez B AD - Medicine Department, Hospital Universitario San Cecilio, Granada, Spain. FAU - Ortego-Centeno, Norberto AU - Ortego-Centeno N AD - Medicine Department, Hospital Universitario San Cecilio, Granada, Spain. FAU - Llorca, Javier AU - Llorca J AD - Epidemiology and Computational Biology Department, School of Medicine, University of Cantabria, and CIBER Epidemiologia y Salud Publica (CIBERESP), IDIVAL, Santander, Spain. FAU - Ubilla, Begona AU - Ubilla B AD - Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Spain. FAU - Mijares, Veronica AU - Mijares V AD - Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Spain. FAU - Pina, Trinitario AU - Pina T AD - Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Spain. FAU - Miranda-Filloy, Jose A AU - Miranda-Filloy JA AD - Division of Rheumatology, Hospital Universitario Lucus Augusti, Lugo, Spain. FAU - Navas Parejo, Antonio AU - Navas Parejo A AD - Nephrology Department, Hospital Universitario San Cecilio, Granada, Spain. FAU - de Argila, Diego AU - de Argila D AD - Dermatology Department, Hospital Universitario La Princesa, IIS-IPrincesa, Madrid, Spain. FAU - Aragues, Maximiliano AU - Aragues M AD - Dermatology Department, Hospital Universitario La Princesa, IIS-IPrincesa, Madrid, Spain. FAU - Rubio, Esteban AU - Rubio E AD - Rheumatology Department, Hospital Universitario Virgen del Rocio, Sevilla, Spain. FAU - Luque, Manuel Leon AU - Luque ML AD - Rheumatology Department, Hospital Universitario Virgen del Rocio, Sevilla, Spain. FAU - Blanco-Madrigal, Juan Maria AU - Blanco-Madrigal JM AD - Rheumatology Department, Hospital Universitario de Basurto, Bilbao, Spain. FAU - Galindez-Aguirregoikoa, Eva AU - Galindez-Aguirregoikoa E AD - Rheumatology Department, Hospital Universitario de Basurto, Bilbao, Spain. FAU - Jayne, David AU - Jayne D AD - Department of Medicine, University of Cambridge, Cambridge, UK. FAU - Blanco, Ricardo AU - Blanco R AD - Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Spain. FAU - Martin, Javier AU - Martin J AD - Instituto de Parasitologia y Biomedicina 'Lopez-Neyra', CSIC, PTS Granada, Granada, Spain. FAU - Gonzalez-Gay, Miguel A AU - Gonzalez-Gay MA AD - Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Spain. AD - School of Medicine, University of Cantabria, Santander, Spain. AD - Cardiovascular Pathophysiology and Genomics Research Unit, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170711 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Immunoglobulin A) SB - IM MH - *Genetic Loci MH - *Genetic Predisposition to Disease MH - *Genome-Wide Association Study MH - Histocompatibility Antigens Class II/*genetics MH - Humans MH - Immunoglobulin A/*immunology MH - Logistic Models MH - Vasculitis/*genetics/*immunology PMC - PMC5506002 COIS- The authors declare that they have no competing interests. EDAT- 2017/07/13 06:00 MHDA- 2019/01/29 06:00 PMCR- 2017/07/11 CRDT- 2017/07/13 06:00 PHST- 2017/01/26 00:00 [received] PHST- 2017/05/05 00:00 [accepted] PHST- 2017/07/13 06:00 [entrez] PHST- 2017/07/13 06:00 [pubmed] PHST- 2019/01/29 06:00 [medline] PHST- 2017/07/11 00:00 [pmc-release] AID - 10.1038/s41598-017-03915-2 [pii] AID - 3915 [pii] AID - 10.1038/s41598-017-03915-2 [doi] PST - epublish SO - Sci Rep. 2017 Jul 11;7(1):5088. doi: 10.1038/s41598-017-03915-2.