HBV genotype-dependent association of HLA Variants with the Serodecline of HBsAg in Chronic Hepatitis B Patients: a 14-year Follow-up Study

Author:

Chu Yu-Ju1,Yang Hwai-I1,Hu Hui-Han1,Liu Jessica1,Lin Yu-Ling1,Chang Chia-Ling1,Luo Wen-Sheng1,Jen Chin-Lan1,Chen Chien-Jen1

Affiliation:

1. Academia Sinica

Abstract

Abstract Background and Aims Seroclearance of hepatitis B surface antigen (HBsAg) is regarded as the functional cure of chronic hepatitis B (CHB). The relationship between human leukocyte antigen (HLA) variants, hepatitis B virus genotype, and longitudinal HBsAg serodecline remains to be explored. Methods A total of 2498 HBeAg-seronegative CHB patients of the community-based REVEAL-HBV cohort were genotyped for rs1710 (HLA-G) and rs2770 (HLA-B) using TaqMan assay. Cox proportional hazard regression and generalized linear mixed models were used to analyze the association of HLA genetic variants with the rate of HBsAg seroclearance and longitudinal HBsAg serodecline. Results Rs1710 G allele was differentially associated with the HBsAg seroclearance in genotype B [aRR (95% CI)=0.74 (0.56-0.98)] and genotype C [aRR (95%CI)=1.43 (1.08-1.88)] infection. Rs2770 G allele was associated with HBsAg seroclearance only in genotype B infection [aRR (95% CI)=0.69 (0.52-0.91)]. The alleles associated with HBsAg seroclearance were significant predictors for the serodecline of HBsAg levels in an HBV genotype-dependent manner (genotype B infection: rs1710, p=0.013; rs2770, p=0.0081; genotype C infection: rs1710, P=0.0452). Conclusions Our results suggest both spontaneous HBsAg seroclearance and serodecline are modified by the interaction between HLA variants and HBV genotype.

Publisher

Research Square Platform LLC

Reference32 articles.

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