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Type: Artigo de periódico
Title: Hla Markers For Poor Prognosis In Systemic Sclerosis Brazilian Patients.
Author: Del Rio, Ana Paula Toledo
Sachetto, Zoraida
Sampaio-Barros, Percival Degrava
Marques-Neto, João Francisco
Londe, Ana Carolina Santos
Bertolo, Manoel Barros
Abstract: The aim of this study was to evaluate human leukocyte antigen (HLA) involvement in the disease expression and poor prognostic clinical features (pulmonary fibrosis and pulmonary arterial hypertension) in patients diagnosed with systemic sclerosis (SSc) in a multiethnic population. SSc patients followed up between 2008 and 2011 were included, and clinical data were obtained through records review. Molecular HLA typing was performed (polymerase chain reaction amplification technique using specific primer sequences). The statistical analysis involved Fisher's exact test and Pearson's corrected chi-square test. P (values) ≤ 0.05 were considered significant. The delta method was used to estimate the variance of the prevalence ratio (PR). A total of 141 patients (120 women and 21 men) with SSc were studied, including 33.3% with diffuse cutaneous SSc (dcSSc), 62.4% with limited cutaneous SSc (lcSSc), and 4.3% with sine scleroderma. Pulmonary fibrosis was present in 61 patients (43.3%), and the HLA-A∗30 and DQB1∗04 alleles were related to susceptibility. In contrast, the HLA-DRB1∗01 and DQB1∗05 alleles were protective. Pulmonary arterial hypertension was diagnosed in 19 patients (13.5%) and was associated with HLA-B∗35 and C∗04; in contrast, C∗03 seemed to be protective. Our current study documents the association of some classes I and II HLA alleles with the most severe clinical manifestations in a multiethnic case series. Our findings differed slightly from the previous data in other populations.
Subject: Brazil
Familial Primary Pulmonary Hypertension
Gene Frequency
Genetic Association Studies
Genetic Markers
Hla-a Antigens
Hla-b Antigens
Hla-c Antigens
Hla-dq Beta-chains
Hla-drb1 Chains
Hypertension, Pulmonary
Pulmonary Fibrosis
Scleroderma, Systemic
Citation: Disease Markers. v. 35, n. 2, p. 73-8, 2013.
Rights: fechado
Identifier DOI: 10.1155/2013/301415
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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