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. 2013 Oct-Dec;25(4):284-9.
doi: 10.5935/0103-507X.20130049.

HLA-A*31 as a marker of genetic susceptibility to sepsis

[Article in English, Portuguese]
Fabiano Pinheiro da Silva  1 , Germano Preuhs Filho  2 , Eduardo Finger  3 , Hermes Vieira Barbeiro  1 , Fernando Godinho Zampieri  1 , Alessandra Carvalho Goulart  1 , Francisco Torggler Filho  1 , Nicolas Panajotopoulos  2 , Irineu Tadeu Velasco  1 , Jorge Kalil  2 , Heraldo Possolo de Souza  1 , Luiz Monteiro da Cruz Neto  1 , Hélcio Rodrigues  2
Affiliations

HLA-A*31 as a marker of genetic susceptibility to sepsis

[Article in English, Portuguese]
Fabiano Pinheiro da Silva et al. Rev Bras Ter Intensiva. 2013 Oct-Dec.

Abstract
in English, Portuguese

Objective: The HLA haplotype has been associated with many autoimmune diseases, but no associations have been described in sepsis. This study aims to investigate the HLA system as a possible marker of genetic sepsis susceptibility.

Methods: This is a prospective cohort study including patients admitted to an intensive care unit and healthy controls from a list of renal transplant donors. Patients with less 18 years of age; pregnant or HIV positive patients; those with metastatic malignancies or receiving chemotherapy; or with advanced liver disease; or with end-of-life conditions were excluded. The DNA was extracted from the whole blood and HLA haplotypes determined using MiliPlex® technology.

Results: From October 2010 to October 2012, 1,121 patients were included (1,078 kidney donors, 20 patients admitted with severe sepsis and 23 with septic shock). HLA-A*31 positive subjects had increased risk of developing sepsis (OR 2.36, 95%CI 1.26-5.35). Considering a p value <0.01, no other significant association was identified.

Conclusion: HLA-A*31 expression is associated to risk of developing sepsis.

Objetivo: Haplótipos do HLA têm sido associados a muitas doenças autoimunes, mas não foi descrita qualquer associação na sepse. O objetivo desse estudo é investigar o sistema HLA como um possível marcador de suscetibilidade genética à sepse.

Métodos: Estudo prospectivo de coorte, incluindo pacientes admitidos em unidade de terapia intensiva e controles-saudáveis obtidos em lista de doadores de transplante renal. Foram excluídos pacientes abaixo dos 18 anos de idade, gestantes ou HIV positivos, pacientes com doença maligna metastática ou sob quimioterapia, pacientes com hepatopatia avançada, com condições de fim de vida. O DNA foi extraído de sangue total, e a haplotipagem de HLA foi realizada com a tecnologia MiliPlex®.

Resultados: Foram incluídos 1.121 pacientes (1.078 doadores de rim, 20 pacientes com sepse grave e 23 pacientes admitidos por choque séptico) entre outubro de 2010 e outubro de 2012. Os participantes positivos para HLA-A*31 tiveram risco aumentado de desenvolver sepse (OR: 2,36 IC95%: 1,26-5,35). Não foi identificada outra associação significativa, quando considerado como nível de significância o valor de p<0,01.

Conclusão: A expressão de HLA-A*31 está associada ao risco de desenvolvimento de sepse.

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Conflict of interest statement

Conflicts of interest: None.

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