HLA-B*5701 genotype is a major determinant of drug-induced liver injury due to flucloxacillin.
Daly AK, Donaldson PT, Bhatnagar P, Shen Y, Pe'er I, Floratos A, Daly MJ, Goldstein DB, John S, Nelson MR, et al. Nat Genet. 2009 Jul; 41(7):816-9. Epub 2009 May 31.