Table 1. Distribution of SLCO1B1 single nucleotide polymorphisms in 12 healthy volunteers.

Characteristic	African American	Caucasian	Combined population
SLCO1B1c.388G→A (*1b)
GG (reference)	3 (50.0%)	1 (16.7%)	4 (33.3%)
GA	2 (33.3%)	5 (83.3%)	7 (58.3%)
AA	1 (16.7%)	0 (0%)	1 (8.3%)
Allelic frequency %	33.3%	41.6%	37.5%
P value*			0.4
SLCO1B1 rs4149032 (intron tSNP)
TT (reference)	2 (33.3%)	1 (16.7%)	3 (25.0%)
TC	2 (33.3%)	3 (50%)	5 (41.7%)
CC	2 (33.3%)	2 (33.3%)	4 (33.3%)
Allelic frequency %	50.0%	58.3%	54.2%
P value*			0.6
SLCO1B1 c.463C→A (*4)
CC (reference)	4 (66.7%)	2 (33.3%)	6 (50.0%)
CA	2 (33.3%)	4 (66.7%)	6 (50.0%)
AA	0 (0%)	0 (0%)	0 (0.0%)
Allelic frequency %	16.7%	33.3%	50.0.0%
P value*			0.2
SLCO1B1 c.521T→C (*5)
TT (reference)	5 (83.3%)	2 (33.3%)	7 (58.3%)
TC	0 (0.0%)	4 (66.7%)	4 (33.3%)
CC	1 (16.7%)	0 (0.0%)	1 (8.3%)
Allelic frequency %	8.3%	16.7%	25.0%
P value*			0.7

^*Chi square testing of Hardy-Weinberg equilibrium