Shared Genetic Risk Factors Across Carbamazepine-Induced Hypersensitivity Reactions

Paola Nicoletti, Sarah Barrett, Laurence McEvoy, Ann K Daly, Guruprasad Aithal, M Isabel Lucena, Raul J Andrade, Mia Wadelius, Pär Hallberg, Camilla Stephens, Einar S Bjornsson, Peter Friedmann, Kati Kainu, Tarja Laitinen, Anthony Marson, Mariam Molokhia, Elizabeth Phillips, Werner Pichler, Antonino Romano, Neil ShearGraeme Sills, Luciana K Tanno, Ashley Swale, Aris Floratos, Yufeng Shen, Matthew R Nelson, Paul B Watkins, Mark J Daly, Andrew P Morris, Ana Alfirevic, Munir Pirmohamed

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Abstract

Carbamazepine (CBZ) causes life-threating T-cell-mediated hypersensitivity reactions, including serious cutaneous adverse reactions (SCARs) and drug-induced liver injury (CBZ-DILI). In order to evaluate shared or phenotype-specific genetic predisposing factors for CBZ hypersensitivity reactions, we performed a meta-analysis of two genomewide association studies (GWAS) on a total of 43 well-phenotyped Northern and Southern European CBZ-SCAR cases and 10,701 population controls and a GWAS on 12 CBZ-DILI cases and 8,438 ethnically matched population controls. HLA-A*31:01 was identified as the strongest genetic predisposing factor for both CBZ-SCAR (odds ratio (OR) = 8.0; 95% CI 4.10-15.80; P = 1.2 × 10-9 ) and CBZ-DILI (OR = 7.3; 95% CI 2.47-23.67; P = 0.0004) in European populations. The association with HLA-A*31:01 in patients with SCAR was mainly driven by hypersensitivity syndrome (OR = 12.9; P = 2.1 × 10-9 ) rather than by Stevens-Johnson syndrome/toxic epidermal necrolysis cases, which showed an association with HLA-B*57:01. We also identified a novel risk locus mapping to ALK only for CBZ-SCAR cases, which needs replication in additional cohorts and functional evaluation.

Original languageEnglish
Pages (from-to)1028-1036
Number of pages9
JournalClinical Pharmacology and Therapeutics
Volume106
Issue number5
Early online date3 Jul 2019
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • Adult
  • Anaplastic Lymphoma Kinase/genetics
  • Carbamazepine/adverse effects
  • Chemical and Drug Induced Liver Injury/epidemiology
  • Drug Hypersensitivity/genetics
  • Drug Hypersensitivity Syndrome/genetics
  • Europe
  • Female
  • Genetic Predisposition to Disease
  • Genome-Wide Association Study
  • HLA-A Antigens/genetics
  • HLA-B Antigens/genetics
  • Humans
  • Male
  • Phenotype
  • Risk Factors
  • Stevens-Johnson Syndrome/genetics

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