PMID- 21737555 OWN - NLM STAT- MEDLINE DCOM- 20120716 LR - 20220317 IS - 1399-3003 (Electronic) IS - 0903-1936 (Print) IS - 0903-1936 (Linking) VI - 39 IP - 3 DP - 2012 Mar TI - Genetic variants associated with severe pneumonia in A/H1N1 influenza infection. PG - 604-10 LID - 10.1183/09031936.00020611 [doi] AB - The A/H1N1 influenza strain isolated in Mexico in 2009 caused severe pulmonary illness in a small number of exposed individuals. Our objective was to determine the influence of genetic factors on their susceptibility. We carried out a case-control association study genotyping 91 patients with confirmed severe pneumonia from A/H1N1 infection and 98 exposed but asymptomatic household contacts, using the HumanCVD BeadChip (Illumina, San Diego, CA, USA). Four risk single-nucleotide polymorphisms were significantly (p<0.0001) associated with severe pneumonia: rs1801274 (Fc fragment of immunoglobulin G, low-affinity IIA, receptor (FCGR2A) gene, chromosome 1; OR 2.68, 95% CI 1.69-4.25); rs9856661 (gene unknown, chromosome 3; OR 2.62, 95% CI 1.64-4.18); rs8070740 (RPA interacting protein (RPAIN) gene, chromosome 17; OR 2.67, 95% CI 1.63-4.39); and rs3786054 (complement component 1, q subcomponent binding protein (C1QBP) gene, chromosome 17; OR 3.13, 95% CI 1.89-5.17). All SNP associations remained significant after adjustment for sex and comorbidities. The SNPs on chromosome 17 were in linkage disequilibrium. These findings revealed that gene polymorphisms located in chromosomes 1 and 17 might influence susceptibility to development of severe pneumonia in A/H1N1 infection. Two of these SNPs are mapped within genes (FCGR2A, C1QBP) involved in the handling of immune complexes and complement activation, respectively, suggesting that these genes may confer risk due to increased activation of host immunity. FAU - Zuniga, J AU - Zuniga J AD - Instituto Nacional deEnfermedades Respiratorias IsmaelCosio Villegas, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico. FAU - Buendia-Roldan, I AU - Buendia-Roldan I FAU - Zhao, Y AU - Zhao Y FAU - Jimenez, L AU - Jimenez L FAU - Torres, D AU - Torres D FAU - Romo, J AU - Romo J FAU - Ramirez, G AU - Ramirez G FAU - Cruz, A AU - Cruz A FAU - Vargas-Alarcon, G AU - Vargas-Alarcon G FAU - Sheu, C-C AU - Sheu CC FAU - Chen, F AU - Chen F FAU - Su, L AU - Su L FAU - Tager, A M AU - Tager AM FAU - Pardo, A AU - Pardo A FAU - Selman, M AU - Selman M FAU - Christiani, D C AU - Christiani DC LA - eng GR - HL060710/HL/NHLBI NIH HHS/United States GR - ES00002/ES/NIEHS NIH HHS/United States GR - R01 HL060710/HL/NHLBI NIH HHS/United States GR - HL095732/HL/NHLBI NIH HHS/United States GR - P30 ES000002/ES/NIEHS NIH HHS/United States GR - R01 HL095732/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20110707 PL - England TA - Eur Respir J JT - The European respiratory journal JID - 8803460 RN - 0 (C1QBP protein, human) RN - 0 (Carrier Proteins) RN - 0 (FCGR2A protein, human) RN - 0 (Mitochondrial Proteins) RN - 0 (Receptors, IgG) SB - IM MH - Adult MH - Carrier Proteins/genetics MH - Case-Control Studies MH - Chromosomes, Human, Pair 1 MH - Chromosomes, Human, Pair 17 MH - Female MH - Genetic Predisposition to Disease MH - *Genetic Variation MH - Humans MH - *Influenza A Virus, H1N1 Subtype MH - Influenza, Human/*genetics/immunology MH - Linkage Disequilibrium MH - Male MH - Mexico MH - Middle Aged MH - Mitochondrial Proteins/genetics MH - Pneumonia, Viral/*genetics/immunology MH - Polymorphism, Single Nucleotide MH - Receptors, IgG/genetics MH - Severity of Illness Index MH - Young Adult PMC - PMC3816497 MID - NIHMS524177 COIS- STATEMENT OF INTEREST None declared. EDAT- 2011/07/09 06:00 MHDA- 2012/07/17 06:00 PMCR- 2013/11/04 CRDT- 2011/07/09 06:00 PHST- 2011/07/09 06:00 [entrez] PHST- 2011/07/09 06:00 [pubmed] PHST- 2012/07/17 06:00 [medline] PHST- 2013/11/04 00:00 [pmc-release] AID - 09031936.00020611 [pii] AID - 10.1183/09031936.00020611 [doi] PST - ppublish SO - Eur Respir J. 2012 Mar;39(3):604-10. doi: 10.1183/09031936.00020611. Epub 2011 Jul 7.