Relationship of HLA-DRB1 alleles with hepatocellular carcinoma development in chronic hepatitis B patients

Young-Joo Jin1, Ju Hyun Shim, Young-Hwa Chung

  • 1Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Insights

The HLA-DRB1*140101 allele may increase hepatocellular carcinoma (HCC) risk in chronic hepatitis B (CHB) patients. This finding was independent of viral activity and treatment response in this study.

Area of Science:

  • Immunogenetics
  • Hepatology
  • Oncology

Background:

  • Chronic hepatitis B (CHB) is a major risk factor for hepatocellular carcinoma (HCC).
  • Human leukocyte antigen (HLA) genes play a crucial role in immune response and disease susceptibility.
  • Specific HLA-DRB1 alleles have been implicated in various immune-mediated diseases.

Purpose of the Study:

  • To investigate the association between specific HLA-DRB1 alleles and the development of HCC in patients with CHB.
  • To identify potential genetic markers for HCC risk stratification in CHB patients.

Main Methods:

  • Retrospective analysis of 468 CHB patients treated with lamivudine for over 12 months.
  • HLA-DRB1 genotyping using sequence-based typing.
  • Regular surveillance for HCC using serum alpha fetoprotein and imaging studies.

Main Results:

  • The HLA-DRB1*140101 allele was significantly more frequent in patients who developed HCC compared to those who did not (19.4% vs. 8.1%, P=0.014).
  • Patients with the HLA-DRB1*140101 allele exhibited markedly higher cumulative rates of HCC development over 2, 4, and 6 years.
  • No other HLA-DRB1 alleles showed a significant association with HCC development.

Conclusions:

  • The HLA-DRB1*140101 allele may be a potential risk factor for HCC development in CHB patients.
  • This association appears to be independent of hepatitis B virus replication and antiviral treatment response.
Abstract