PMID- 15653417 OWN - NLM STAT- MEDLINE DCOM- 20050322 LR - 20061115 IS - 1386-6532 (Print) IS - 1386-6532 (Linking) VI - 32 IP - 2 DP - 2005 Feb TI - Human leukocyte antigen phenotypes and hepatitis C viral load. PG - 144-50 AB - BACKGROUND: After hepatitis C virus (HCV) infection, 55% to 85% of patients become chronic carriers. HCV-RNA could be detected in the sera of these patients though the viral load varies. Various factors may be involved in determining the viral load. OBJECTIVES: In this study, we want to investigate the relationship between human leukocyte antigen phenotypes and hepatitis C viral load. STUDY DESIGN: One hundred and sixty HCV-RNA positive subjects were investigated in this study. RESULTS: We have analyzed 160 HCV-RNA positive subjects and found that lower HCV viral load is significantly associated with HBsAg-positivity (P = 0.017) but not age, gender, or mixed infection (infection with different HCV genotypes). One hundred and fifty-four HBsAg-negative subjects were further analyzed to explore the relationship between human leukocyte antigen (HLA) phenotypes and HCV viral load. Subjects with certain HLA alleles (A*34, B*56, DRB1*1502) have significantly lower viral load than those without these alleles (P = 0.0074, 0.0039 and 0.016, respectively) while those with HLA-B*4001 have significantly higher viral load (P = 0.0026). Furthermore, lower viral load was significantly associated with HLA-DRB1 heterozygosity in subjects with HLA-B heterozygosity (P = 0.048). CONCLUSIONS: Our data suggests a role for host immunogenetic factors in determining viral load during HCV infection. FAU - Wang, Li-Yu AU - Wang LY AD - Graduate Institute of Aboriginal Health, Tzu Chi University, Hualien, Taiwan. FAU - Lin, Hans Hsienhong AU - Lin HH FAU - Lee, Tsung-Dao AU - Lee TD FAU - Wu, Ya-Fang AU - Wu YF FAU - Hu, Chi-Tan AU - Hu CT FAU - Cheng, Mu-Liang AU - Cheng ML FAU - Lo, Shih-Yen AU - Lo SY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Clin Virol JT - Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology JID - 9815671 RN - 0 (HLA Antigens) RN - 0 (Oligonucleotide Probes) RN - 0 (RNA, Viral) SB - IM MH - Aged MH - Female MH - HLA Antigens/*classification MH - Hepacivirus/classification/genetics/*physiology MH - Hepatitis C/virology MH - Heterozygote MH - Homozygote MH - Humans MH - Male MH - Middle Aged MH - Nucleic Acid Hybridization MH - Oligonucleotide Probes MH - Phenotype MH - RNA, Viral/blood MH - *Viral Load EDAT- 2005/01/18 09:00 MHDA- 2005/03/23 09:00 CRDT- 2005/01/18 09:00 PHST- 2004/04/26 00:00 [revised] PHST- 2004/05/18 00:00 [accepted] PHST- 2005/01/18 09:00 [pubmed] PHST- 2005/03/23 09:00 [medline] PHST- 2005/01/18 09:00 [entrez] AID - S1386653204001647 [pii] AID - 10.1016/j.jcv.2004.05.011 [doi] PST - ppublish SO - J Clin Virol. 2005 Feb;32(2):144-50. doi: 10.1016/j.jcv.2004.05.011.