PMID- 17505501 OWN - NLM STAT- MEDLINE DCOM- 20080701 LR - 20121115 IS - 1473-1150 (Electronic) IS - 1470-269X (Linking) VI - 8 IP - 3 DP - 2008 Jun TI - Genome-wide pharmacogenetic investigation of a hepatic adverse event without clinical signs of immunopathology suggests an underlying immune pathogenesis. PG - 186-95 AB - One of the major goals of pharmacogenetics is to elucidate mechanisms and identify patients at increased risk of adverse events (AEs). To date, however, there have been only a few successful examples of this type of approach. In this paper, we describe a retrospective case-control pharmacogenetic study of an AE of unknown mechanism, characterized by elevated levels of serum alanine aminotransferase (ALAT) during long-term treatment with the oral direct thrombin inhibitor ximelagatran. The study was based on 74 cases and 130 treated controls and included both a genome-wide tag single nucleotide polymorphism and large-scale candidate gene analysis. A strong genetic association between elevated ALAT and the MHC alleles DRB1(*)07 and DQA1(*)02 was discovered and replicated, suggesting a possible immune pathogenesis. Consistent with this hypothesis, immunological studies suggest that ximelagatran may have the ability to act as a contact sensitizer, and hence be able to stimulate an adaptive immune response. FAU - Kindmark, A AU - Kindmark A AD - AstraZeneca, R&D, Molndal, Sweden. FAU - Jawaid, A AU - Jawaid A FAU - Harbron, C G AU - Harbron CG FAU - Barratt, B J AU - Barratt BJ FAU - Bengtsson, O F AU - Bengtsson OF FAU - Andersson, T B AU - Andersson TB FAU - Carlsson, S AU - Carlsson S FAU - Cederbrant, K E AU - Cederbrant KE FAU - Gibson, N J AU - Gibson NJ FAU - Armstrong, M AU - Armstrong M FAU - Lagerstrom-Fermer, M E AU - Lagerstrom-Fermer ME FAU - Dellsen, A AU - Dellsen A FAU - Brown, E M AU - Brown EM FAU - Thornton, M AU - Thornton M FAU - Dukes, C AU - Dukes C FAU - Jenkins, S C AU - Jenkins SC FAU - Firth, M A AU - Firth MA FAU - Harrod, G O AU - Harrod GO FAU - Pinel, T H AU - Pinel TH FAU - Billing-Clason, S M E AU - Billing-Clason SM FAU - Cardon, L R AU - Cardon LR FAU - March, R E AU - March RE LA - eng PT - Journal Article DEP - 20070515 PL - United States TA - Pharmacogenomics J JT - The pharmacogenomics journal JID - 101083949 RN - 0 (Anticoagulants) RN - 0 (Azetidines) RN - 0 (Benzylamines) RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ alpha-Chains) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQA1 antigen) RN - 0 (HLA-DQB1 antigen) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) RN - 49HFB70472 (ximelagatran) RN - EC 2.6.1.2 (Alanine Transaminase) SB - IM MH - Alanine Transaminase/*blood MH - Anticoagulants/*adverse effects MH - Azetidines/*adverse effects MH - Benzylamines/*adverse effects MH - Case-Control Studies MH - HLA-DQ Antigens/genetics MH - HLA-DQ alpha-Chains MH - HLA-DQ beta-Chains MH - HLA-DR Antigens/genetics MH - HLA-DRB1 Chains MH - Humans MH - Liver/*drug effects MH - Lymphocyte Activation/drug effects MH - *Polymorphism, Single Nucleotide MH - Retrospective Studies EDAT- 2007/05/17 09:00 MHDA- 2008/07/02 09:00 CRDT- 2007/05/17 09:00 PHST- 2007/05/17 09:00 [pubmed] PHST- 2008/07/02 09:00 [medline] PHST- 2007/05/17 09:00 [entrez] AID - 6500458 [pii] AID - 10.1038/sj.tpj.6500458 [doi] PST - ppublish SO - Pharmacogenomics J. 2008 Jun;8(3):186-95. doi: 10.1038/sj.tpj.6500458. Epub 2007 May 15.