| Localization | Gene | SNP, allele1/allele2 | Genotyping method |
| 4p12 | GABRA2 | rs279858, A/G | Allele-specific PCR. Primers: 5′-TGGAATTTTACCGTGTCTTGTGTC-3′, 5′-ACAGCTAGATTGGCTGGTTGTT-3′, 5′-ATATTATGAGCTACTGATTTT-3′, 5′-ATATTATGAGCTACTGATTTC-3′ |
| 5p15.33 | DAT1 | rs28363170 (VNTR), 3-16 repeats | AFLP-PCR. Primers: 5′- TGCGGTGTAGGGAACGGCCTGAG-3′, 5′-CTTCCTGGAGGTCACGGCTCAAGG-3′ |
| 11p14.1 | BDNF | rs6265, A/G | Allele-specific PCR, according to [7] |
| 11q23.2 | DRD2 | rs1800497, C/T | PCR-RFLP. Primers: 5′-GGCTTAGAACCACCCAGAGT-3′, 5′-GAGCACCTTCCTGAGTGTCA-3′ Restriction endonuclease Taq I |
| 13q14.2 | HTR2A | rs6313, C/T | Allele-specific PCR. Primers: 5′-TACAGTAATGACTTTAACTCC-3′, 5′-TACAGTAATGACTTTAACTCT-3′, 5′-AAGGAGAGACACGACGGTGA-3′ |
| 15q25.1 | CHRNA5 | rs16969968, A/G | Allele-specific PCR. Primers: 5′-TGGGGGAAGTGGAGAAGTGA-3′, 5′-ACATTGGAAGCTGCGCTCA-3′, 5′-ACATTGGAAGCTGCGCTCG-3′ |
| 19q13.2 | CYP2A6 | rs4105144, C/T | Allele-specific PCR. Primers: 5′-CAGATATCAATCGCTCTAATCCT-3′, 5′-CAGATATCAATCGCTCTAATCCC-3′, 5′-TTCCTAGTGCCAACCCCAGT-3′ |
| 20q11.21 | DNMT3B | rs910083, A/C | PCR-RFLP. Primers: 5′-GGAGACTAGAACATTCCCTGTGT-3′, 5′-GGCCATTCAGGGATGCTAATC-3′ Restriction endonuclease Sal I |
| 22q11.21 | COMT | rs4680, A/G | Real-time allele-specific PCR with the use of genotyping kit produced by LLC scientific and production company “LYTECH” |
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