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HLA Class II-DRB1 Alleles with Hepatitis C Virus Infection Outcome in Egypt: A Multicentre Family-based Study

Mahmoud El-Bendary, Mustafa Neamatallah, Hatem Elalfy, Tarek Besheer, Emily Kamel, Hend Mousa, Abdel-Hamid Eladl, Maged El-Setouhy, Abdel-Hady Guillan, Ahmed El-Waseef, Gamal Esmat

Abstract

Introduction and aim. Hepatitis C virus (HCV) infection is a global medical problem. HLA –DRB1 alleles have an important role in immune response against HCV. The aim of this study is to clarify the contribution of HLA –DRB1 alleles in HCV susceptibility in a multicentre family-based study. Material and methods. A total of 162 Egyptian families were recruited in this study with a total of 951 individuals (255 with chronic hepatitis C (CHC), 588 persons in the control group(-ve household contact to HCV) and 108 persons who spontaneously cleared the virus (SVC). All subjects were genotyped for HLA -DRB1 alleles by SSP-PCR and sequence based typing (SBT) methods. Results. The carriage of alleles 3:01:01 and 13:01:01 were highly significant in CHC when compared to that of control and SVC groups [OR of 3 family = 5.1289, PC (Bonferroni correction ) = 0.0002 and 5.9847, PC = 0.0001 and OR of 13 family = 4.6860, PC = 0.0002 and OR = 6.5987, PC = 0.0001 respectively]. While DRB1*040501, DRB1*040101, DRB1*7:01:01 and DRB1*110101 alleles were more frequent in SVC group than CHC patients (OR = 0.4052, PC = 0.03, OR: OR = 0.0916, PC = 0.0006, OR = 0.1833, PC = 0.0006 and OR = 0.4061, PC = 0.0001 respectively). Conclusions. It was concluded that among the Egyptian families, HLA- DRB1*030101, and DRB1*130101 alleles associated with the risk of progression to CHC infection, while DRB1*040101, DRB1*040501, DRB1*7:01:01and DRB1*110101 act as protective alleles against HCV infection.

Key words. HCV susceptibility, HLA-DRB1 polymorphism, Virus clearance, Intrafamilial

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The Official Journal of the Mexican Association of Hepatology, the Latin-American Association for the Study of the Liver and the Canadian Association for the Study of the Liver

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