Table 1. The results of estimating the frequency distribution of alleles and genotypes of the COMT, BDNF and HTR2A genes polymorphisms corresponded to the Hardy-Weinberg equilibrium.

Genes	SNP	Position	Minor/major allele	Genotype frequency			PHWE
				minor	heterozygous	dominant
COMT	rs4680	19963748	A/G	0,096	0,562	0,342	0,246
BDNF	rs6265	27658369	G/A	0,014	0,356	0,630	0,446
HTR2A	rs6311	46897343	G/A	0,260	0,397	0,343	0,232

PHWE – P-value for Hardy-Weinberg equilibrium.