BDNF and mental disorder: For the rs6265 genetic variant in the BDNF gene, significant associations were shown for homozygotes and heterozygotes compared to non-carriers in the dominant model (OR = 0.76, 95% CI = 0.62–0.92, p = 0.0046, FDR = 0.009); allele T was less common in the group of patients with mental disorders, suggesting a protective effect.