TABLE 1.

Frequency of the CYP3A5 *1 allele in different populations, ¹⁴ including assumed activity relative to homozygous carriers of the *1 allele.

Population	Frequency of the CYP3A5 *1 allele, %	Assumed activity, %
Phenotype
Normal metabolizer	100.0	100.0
Poor metabolizer	0.0	0.0
Race and Ethnicity
African American	60.5	60.5
Asian	25.8	25.8
Latin American	20.2	20.2
Caucasian	7.8	7.8

Abbreviation: CYP, cytochrome P450.