NCIt definition : Human CYP2D6*1 allele is located in the vicinity of 22q13.1 and is approximately 4
kb in length. This allele, a variant form of the CYP2D6 wild-type allele, encodes
cytochrome P450 2D6*1 protein. There are multiple haplotypes of the CYP2D6*1 allele.
The nucleotide sequence of CYP2D6*1A is identical to that of the wild-type allele
and exhibits no mutations. Four other haplotypes of the CYP2D6*1 allele exhibit SNPs
that have no effect on the enzymatic activity of the corresponding cytochrome P450
2D6*10 proteins.;