Table 2. Variants examined in the present study.

Gene	SNP	Minor allele	Frequency (%)		p-heterogeneity*
			Present study	Published studies [ref]
ADH1B	rs1229984	T	0.02	0.06 [17]	<0.01
ADH1C	rs698	C	0.33	0.44 [17]	<0.01
ADH7	rs1573496	C	0.04	0.11 [17]	<0.01
ALDH2	rs4767364	A	0.66	0.30 [17]	<0.01
CHRNA3	rs578776	A	0.51	0.40 [8]	<0.01
CHRNA5	rs16969968	A	0.18	0.34 [8]	<0.01

^*indicates heterogeneity of minor allele frequencies between the present study and previous European studies, minor allele calling was similar between Indians and Europeans.