Table 6. Genotypes of SNPs-related variation of dopamine concentration in DRD4
Genotype | SNP |
G292A | C147T |
GG (n = 8) | GA (n = 20) | AA (n = 3) | CC (n = 28) | CT (n = 3) |
Dopamine (ng/mL) | 8.1 ± 1.65b | 10.1 ± 1.50b | 4.8 ± 0.91a | 9.1 ± 1.19 | 8.5 ± 1.32 |
Means with different superscript letters are significantly different (p < 0.05).
SNP, single nucleotide polymorphism; DRD4, dopamine receptor D4 gene.