Table 1.

Single-Nucleotide Polymorphisms (SNPs): ID Numbers (RS Number^a) and Their Location in COMT Gene.

SNP	Gene	Chromosome	Locationb	Variation	Amino Acid
RS6269	COMT	22	18,329,952	A/G	Promoter region
RS4633	COMT	22	18,330,235	C/T	His62/His
RS4818	COMT	22	18,331,207	C/G	Leu136/Leu
RS4680	COMT	22	18,331,271	A/G	Val158/Met

Abbreviation: COMT, catechol-O-methyltransferase.

^a Nackley et al.³²

^b Location is from ENSEMBL using Build 36.