PharmVar core alleles to be used by PharmGKB and CPIC
PharmVar has released core alleles - single, rule-based definitions per star allele distilled from the respective suballeles - for the cytochrome P450 genes CYP2C9, CYP2C19, and CYP2D6. Only sequence variations that change an amino acid or impact function by changing expression levels or interfere with splicing and are present in