Table 2.

Comparison of allele frequencies of CYP2C9 reported from different ethnic populations.

Population	n⋆	Ile359	Leu359	n⋆	Arg144	Cys144	Reference
Asian
Korean	1148	0.987	0.011	620	1	0	Present study
		(0.981–0.993)	(0.007–0.019)
Japanese	436	0.979	0.021	436	1	0	[8]
		(0.966–0.992)	(0.008–0.034)
Han Chinese	230	0.983	0.017	106	1	0	[10]
		(0.956–0.993)	(0.007–0.044)
Taiwan Chinese				164	1	0	[10]
Taiwan Chinese	196	0.974	0.026	196	1	0	[3]
		(0.942–0.989)	(0.011–0.058)
Caucasian
American	200	0.940	0.060	200	0.920	0.080	[3]
		(0.907–0.973)	(0.027–0.093)		(0.882–0.958)	(0.042–0.118)
British	200	0.915	0.085	200	0.875	0.125	[13]
		(0.876–0.954)	(0.046–0.124)		(0.829–0.921)	(0.079–0.171)
Swedish	860	0.926	0.074	860	0.893	0.107	[7]
		(0.906–0.941)	(0.056–0.091)		(0.872–0.913)	(0.086–0.127)
Turkish	998	0.900	0.100	998	0.894	0.106	[12]
		(0.880–0.917)	(0.079–0.123)		(0.873–0.911)	(0.089–0.127)
African
African-American	200	0.995	0.005	200	0.990	0.010	[3]
		(0.985–1.005)	(−0.005–0.015)	(0.976–1.004)	(−0.004–0.024)

^⋆Number of alleles studied.