Abstract
BACKGROUND & AIMS: Minocycline hepatotoxicity can present with prominent autoimmune features in previously healthy individuals. The aim of this study was to identify genetic determinants of minocycline DILI in a well-phenotyped cohort of patients.
METHODS: Caucasian patients with minocycline DILI underwent genome-wide genotyping and were compared to unexposed population controls. Human leukocyte antigen (HLA) binding of minocycline was assessed using AutoDock Vina.
RESULTS: Amongst the 25 cases, 80% were female, median age was 19 years and median latency from drug start to DILI onset was 318 days. At presentation, 76% had acute hepatocellular liver injury, median ALT 1077 U/L (range: 63 to 2333), median bilirubin 4.5 mg/dl (range: 0.2 to 16.7), and 90% had a +ANA. During follow-up, 50% were treated with corticosteroids and no subjects died or required a liver transplant. A significant association was noted between HLA-B∗35:02 and risk for minocycline-DILI; a 16% carrier frequency in DILI cases compared to 0.6% in population controls (Odds Ratio: 29.6, 95% CI: 7.8-89.8, p=2.5 x 10(-8)). Verification of HLA-B∗35:02 imputation was confirmed by sequence-based HLA typing. HLA-B∗35:02 carriers had similar presenting features and outcomes compared to non-carriers. In silico modeling studies support the hypothesis that direct binding of minocycline to this novel HLA risk allele might be an important initiating event in minocycline-DILI.
CONCLUSION: HLA-B∗35:02 is a rare HLA allele that was more frequently identified in the 25 minocycline-DILI cases compared to population controls. If confirmed in other cohorts, this HLA allele may prove to be a useful diagnostic marker of minocycline DILI.
| Original language | English |
|---|---|
| Pages (from-to) | 137-144 |
| Number of pages | 8 |
| Journal | Journal of Hepatology |
| Volume | 67 |
| Issue number | 1 |
| Early online date | 18 Mar 2017 |
| DOIs | |
| Publication status | Published - Jul 2017 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- Autoimmunity
- Drug-induced liver injury
- Genetic association
- Human leukocyte antigen
- Single nucleotide polymorphism
ASJC Scopus subject areas
- Hepatology
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Dive into the research topics of 'Minocycline hepatotoxicity: Clinical characterization and identification of HLA-B*35:02 as a risk factor'. Together they form a unique fingerprint.Profiles
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Dillon, John
- Respiratory Medicine and Gastroenterology - Clinical Professor (Teaching and Research) of Hepatology and Gastroenterology
Person: Academic
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