NCIt definition : Human CYP2C8*4 allele is located in the vicinity of 10q23.33 and is approximately
33 kb in length. This allele, a variant form of the CYP2C8 wild-type allele, encodes
cytochrome P450 2C8*4 protein. The CYP2C8*4 allele exhibits a SNP (c.792C G) in exon
5 that results in an I264M coding change. However, this alteration in protein sequence
has no significant effect on the enzymatic activity of the cytochrome P450 2C8*4 protein.;