HLA association of amoxicillin-clavulanate--induced hepatitis
Summary
This summary is machine-generated.Amoxicillin-clavulanate-induced hepatitis is linked to a specific human leukocyte antigen (HLA) haplotype. This finding suggests immune system variations contribute to drug-induced liver injury, impacting hepatitis presentation.
Area Of Science
- Immunology
- Hepatology
- Pharmacogenomics
Background
- Drug-induced liver injury (DILI) affects a small patient subset due to idiosyncratic reactions.
- Immune system variations (immunologic idiosyncrasy) are suspected causes for DILI.
- Human Leukocyte Antigen (HLA) associations are hypothesized but require robust investigation.
Purpose Of The Study
- To investigate the association between HLA types and amoxicillin-clavulanate-induced hepatitis.
- To explore the role of immunologic idiosyncrasy in DILI pathogenesis.
Main Methods
- Studied 35 patients with biopsy-confirmed amoxicillin-clavulanate hepatitis.
- Performed HLA-A and -B typing using alloantisera.
- Utilized polymerase chain reaction-line probe assay for HLA-DRB and -DWB typing.
Main Results
- A significant association was found with the DRB1*1501-DRB5*0101-DQB1*0602 HLA haplotype (57.1% vs. 11.7% in controls, P < 0.000005).
- Patients with this haplotype were more likely to present with cholestatic or mixed hepatitis patterns.
- Hepatocellular patterns were less common in patients with the associated haplotype.
Conclusions
- Amoxicillin-clavulanate-induced hepatitis is strongly associated with the DRB1*1501-DRB5*0101-DQB1*0602 HLA haplotype.
- Data support HLA class II antigen involvement in the immune-mediated pathogenesis of DILI.
- The specific HLA association influences hepatitis expression but has a limited overall impact.
View abstract on PubMed