PMID- 11124840 OWN - NLM STAT- MEDLINE DCOM- 20010201 LR - 20111117 IS - 0270-9139 (Print) IS - 0270-9139 (Linking) VI - 33 IP - 1 DP - 2001 Jan TI - HLA class II genes determine the natural variance of hepatitis C viral load. PG - 224-30 AB - The aim of this study was to investigate the relationship between human leukocyte antigen (HLA) class II genes and the natural fluctuations in hepatitis C viral load in a homogeneous patient population. The study group consisted of 57 viremic (hepatitis C virus [HCV] 1b) women for whom HLA class II DRB1 and DQB1 haplotyping, virologic, histologic, and biochemical markers of disease activity were available. All patients were infected with HCV 1b from the same source of hepatitis C-contaminated anti-D immunoglobulin during the period from May 1977 to November 1978. The mean slope of change of viral load was 0.34 (SD +/- 0.73) log(10) viral copies/mL/year, which is significantly different from zero, P < 10(-9). Analysis of the relationship between the slope of change of viral load and HLA class II haplotype indicated a significantly different slope of change of viral load between the alleles of (1) DRB1(*)15 and DRB1(*)0701, and (2) DQB1(*)0602 and DQB1(*)0201, P(c) =.036 and P(c) =.026 after Bonferroni correction for multiple comparisons, respectively. Significant differences for grade and stage of disease at liver biopsy were observed for DQB1(*)0501 and DQB1(*)0201 alleles; P =.019, r(s) =.64, and P =.047, r(s) =.57, respectively. In addition, significant differences in stage of disease were found to exist between DRB1(*)13 and DRB1(*)0701, P =.031, r(s) = -.71. Our results define an association between the slope of change of viral load and HLA class II haplotype in patients infected with genotype 1b of HCV. This suggests a role for host immunogenetic factors in HCV infection in this homogeneous group. FAU - Fanning, L J AU - Fanning LJ AD - Hepatitis C Unit, Department of Medicine, National University of Ireland, Cork. L.FANNING@UCC.IE FAU - Levis, J AU - Levis J FAU - Kenny-Walsh, E AU - Kenny-Walsh E FAU - Whelton, M AU - Whelton M FAU - O'Sullivan, K AU - O'Sullivan K FAU - Shanahan, F AU - Shanahan F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Hepatology JT - Hepatology (Baltimore, Md.) JID - 8302946 RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQB1 antigen) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) RN - 0 (Histocompatibility Antigens Class II) SB - IM MH - Adult MH - Alleles MH - Cohort Studies MH - Female MH - HLA-DQ Antigens/genetics MH - HLA-DQ beta-Chains MH - HLA-DR Antigens/genetics MH - HLA-DRB1 Chains MH - Haplotypes MH - Hepatitis C/*genetics/immunology/*virology MH - Histocompatibility Antigens Class II/*genetics MH - Humans MH - Viral Load MH - Viremia/genetics/immunology/virology EDAT- 2000/12/22 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/12/22 11:00 PHST- 2000/12/22 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/12/22 11:00 [entrez] AID - S0270-9139(01)49208-1 [pii] AID - 10.1053/jhep.2001.20642 [doi] PST - ppublish SO - Hepatology. 2001 Jan;33(1):224-30. doi: 10.1053/jhep.2001.20642.