Table 3.

OCT1 alleles and their frequencies.

Allele	Allele frequency
	Caucasian			African – American
	n †	Diplotype frequency	Genotype group frequency	n †	Diplotype frequency	Genotype group frequency
OCT1*1	166	0.735	0.735	49	0.875	0.875
OCT1*2	31	0.137		4	0.071
OCT1*3	13	0.058	0.265	2	0.036	0.125
OCT1*4	10	0.044		0	0.000
OCT1*5	6	0.027		1	0.018
Total	226	1		56	1

^†The number of alleles was calculated according to the genotypes.