Rs16947

The wild type (normal) allele at this SNP is (G). The (A) variant indicates the presence of a non-wild type CYP2D6 variant, but it appears in many different variants so it can not be used to determine the presence of any particular variant.

Inheriting a normal number of copies of this allele results in CYP2D6 function that is indistinguishable from wild-type (normal) activity. However, this variant has been seen present in higher copy numbers, and in these cases, can result in the ultrafast metabolizer phenotype.


 * is_associated_with_disease::Breast cancer