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Prevalence of Human Leukocyte Antigen HLA-B*5701 in HIV-1 Infected Individuals in Brazil

Open Journal of Genetics 2014年第1期4卷 56-62页

作者： Claudinéia de Araújo Cristina Valetta de Carvalho Miriam Estela de Souza Freire Amanda Yamaguti Ivens Cuiabano Scaff Fernando José de Souza Flávia Galindo Silvestre Silva Ricardo Sobhie Diaz Ismael Dale Cotrim Guerreiro da Silva Department of Gynecology Molecular Gynecology Laboratory Federal University of S&atildeo Paulo S&atildeo Paulo Brazil State Department of Health of Mato Grosso Cuiabá Brazil Unirondon University Cuiabá Brazil Infectious Diseases Division Federal University of Mato Grosso Cuiabá Brazil imunogenetics laboratory General University Hospital Cuiabá Brazil

This study was designed to establish the prevalence of HLA-B*5701 at HIV-1 infected individuals in Brazil. A total of 517 consecutive individuals were followed in this study from February 2009 through July 2011. The presence of HLA-B*5701 was determined by Nested-PCR with HLA-B*57 and HLA-B*5701 sequence-specific primers (PCR-SSP). The expression of HLA-B*57 was negative in the 385 (74.5%) and positive in the 103 (19.9%) of infected individuals. Among these, the expression of HLA-B5701 was positive in the 29 (5.6%) of individuals. No demographic or ethnic differences were found between HLA-B*57/HLA-B*5701 HIV-1 negative patients, with a prevalence of Caucasians (57.1%) individuals. During the period of study, 68 patients were submited to an abacavir contain- ing regimen. The HLA-B*5701 allele was observed in 7 (10.3%) patients, with a significant incidence of Hypersensitivity reactions at 4 of them (p < 0.001). Conclusions: Although Brazilian population consists of a mixture of individuals of Caucasian, African and Native American genetic background, prevalence of HLA-B*5701 in this population is similar to the one found in pure Caucasians.

关键词： Immunogenetics Human Immunodeficiency Virus HLA-B*5701 Antigen Human Abacavir

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