Table 2. CYP2D6 genotypes and expected phenotypes.

CYP2D6 genotype	Expected phenotype	No. of EM alleles	No. of PM alleles	Frequency	%
*1/*1	EM/EM	2	0	3	7.1
*1/*2				6	14.3
*2/*2				2	4.8
*1/*10	EM/IM	1	0	14	33.3
*1/*49				1	2.4
*1/*52				1	2.4
*2/*10				5	12.0
*1/*5	EM/PM	1	1	1	2.4
					EM subtotal: 33 (78.6%)
*10/*10	IM/IM	0	0	4	9.5
*10/*41				1	2.4
*10/*49				1	2.4
*5/*10	IM/PM	0	1	3	7.1
					IM subtotal: 9 (21.4%)
Total				42	100.0

EM, extensive metabolizer; PM, poor metabolizer; IM, intermediate metabolizer.