Table 4. Distribution of allele frequencies in the study population.

	SNP	Genotype			Allele frequency		HWE (p- value)
ABCC2 (MRP2)	rs2273697	GG	GA	AA	G	A
		50	30	4	0.77	0.23	0.92
	rs3740066	CC	CT	TT	C	T
		40	32	12	0.67	0.33	0.26
	rs717620*	CC	CT	TT	C	T
		58	22	3	0.82	0.17	0.85
	rs8187710	GG	GA	AA	G	A
		77	7	0	0.96	0.04	0.35
SLCO1B1 (OATP1B1)	rs4149056	TT	CT	CC	T	C
		54	27	3	0.80	0.20	0.88
	rs2306283	AA	GA	GG	A	G
		29	40	15	0.58	0.42	0.95
	rs11045819	CC	AC	AA	C	A
		63	20	1	0.87	0.13	0.92
ABCB1 (PGP)	rs1045642	TT	CT	CC	T	C
		21	43	20	0.51	0.49	0.94
	rs1128503	TT	CT	CC	T	C
		19	38	27	0.45	0.55	0.53
	rs2032582	TT	GT	GG	T	G
		22	38	24	0.49	0.51	0.48
COMT	rs4680	GG	GA	AA	G	A
		14	47	23	0.45	0.55	0.3
SULT1A1	rs750155	GG	GA	AA	C	T
		18	45	21	0.48	0.52	0.61
UGT1A1*28: (TA)7 repeat	rs8175347	(-)	(-/TA)	TA	(-)	TA
		37	37	10	0.66	0.34	0.95

*for one individual genotype could not be determined, SNP: single nucleotide polymorphism, HWE: Hardy-Weinberg Equilibrium