Table 2.

OATP1B1 phenotypes based on SLCO1B1 diplotypes in Thais distributed among the five regions of Thailand.

OATP1B1 phenotypes	SLCO1B1 diplotypes	Phenotype frequencies (%)
		Worldwidea	Total	Northern	Central	North eastern	Southern	Bangkok
Normal function	*1a/*1a *1a/*1b *1b/*1b	55 – 88	75.85	76.70	73.27	74.14	84.91	72.86
Intermediate function	*1a/*5 *1a/*15 *1b/*5 *1b/*15	11 – 36	22.57	22.58	24.84	24.27	13.21	24.29
Low function	*5/*5 *5/*15 *15/*15	0 – 6	1.58	0.72	1.89	1.58	1.89	2.86

^a, Frequency of the polymorphism varies by ancestral group.