CCL21 and Anxiety: Analysis of the data did not demonstrate statistically significant differences in the levels of state anxiety (STAI X1) and trait anxiety (STAI X2) according to STAI depending on the distribution of genotypes of the 44-bp VNTR polymorphism in the 5-HTT (SLC 6A4) promoter region and the 30-bp VNTR polymorphism in the MAO-A promoter region (p > 0.05).