Table 2.

Genotype of Study Participants

Gene/Locus	Reference	Mutation	−/−	+/−	+/+
AGTR1*	rs5186	A→C	7	7	7
AGTR1	rs4488792	C→T	10	11	0
TRPV-1	rs8065080	C→T	2	10	9

Gene/Locus	Reference	Mutation	Wild Type	Null
GSTM1	OMIM 138350	Deletion	11	10

^*rs5186 was the focus of subject recruitment and stratification.