CYP2D6 allele function update

The CYP2D6 allele functionality file has been re-evaluated and updated by experts involved in CYP2D6-related CPIC guidelines. CYP2D6 functions are now assigned up to star allele 163. 

Part of the re-evaluation focused on alleles that include 100C>T (P34S) (*10 key SNP). Furthermore, the activity value of several decreased function alleles, e.g. *9 and *41, was downgraded to 0.25. 

The updated file can be accessed through CYP2D6-related guidelines on the CPIC website and through the CYP2D6 resource page on PharmGKB. The updated functions are also displayed on the PharmVar CYP2D6 page .