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HLA-A homozygosis is associated with susceptibility to COVID-19.
De Marco, Renato; Faria, Tathyane C; Mine, Karina L; Cristelli, Marina; Medina-Pestana, José O; Tedesco-Silva, Hélio; Gerbase-DeLima, Maria.
Afiliação
  • De Marco R; Instituto de Imunogenética, Associação Fundo de Incentivo à Pesquisa, São Paulo, Brazil.
  • Faria TC; Instituto de Imunogenética, Associação Fundo de Incentivo à Pesquisa, São Paulo, Brazil.
  • Mine KL; Instituto de Imunogenética, Associação Fundo de Incentivo à Pesquisa, São Paulo, Brazil.
  • Cristelli M; Nephrology Division, Hospital do Rim, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Medina-Pestana JO; Nephrology Division, Hospital do Rim, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Tedesco-Silva H; Nephrology Division, Hospital do Rim, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Gerbase-DeLima M; Instituto de Imunogenética, Associação Fundo de Incentivo à Pesquisa, São Paulo, Brazil.
HLA ; 98(2): 122-131, 2021 08.
Article em En | MEDLINE | ID: mdl-34165257
The purpose of this single center retrospective study was to investigate the relationship between HLA and ABO polymorphisms and COVID-19 susceptibility and severity in kidney transplant recipients. It included 720 recipients who had COVID-19 and 1680 controls composed by recipients in follow-up who did not contact the transplantation center for COVID-19 symptoms, up to the moment of their inclusion in the study. HLA-A, -B, and -DRB1 allele groups and ABO frequencies were compared between recipients with COVID-19 (all cases, or separately mild/moderate and severe disease) and controls. The HLA association study was conducted in two case-control series and only associations that showed a p-value <0.05 in both series were considered. No HLA association regarding COVID-19 occurrence or severity met this criterion. Homozygosity at HLA-A locus was associated with COVID-19 susceptibility (odds ratio 1.4) but not severity. Blood groups A and O were associated with susceptibility and resistance to COVID-19, respectively. COVID-19 severity was associated only with older age and cardiac disease, in a multivariate analysis. We conclude that an influence of HLA on COVID-19 susceptibility is supported by the association with homozygosity at HLA-A locus but that there is no evidence for a role of any particular HLA-A, -B, or -DRB1 polymorphism. Thus, we suggest that what matters is the overall capability of an individual's HLA molecules to present SARS-CoV-2 peptides to T cells, a factor that might have a great influence on the breadth of the immune response.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: COVID-19 Tipo de estudo: Observational_studies / Risk_factors_studies Limite: Aged / Humans Idioma: En Revista: HLA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: COVID-19 Tipo de estudo: Observational_studies / Risk_factors_studies Limite: Aged / Humans Idioma: En Revista: HLA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido