For example, the ATAAT haplotype (5 SNP NTRK2) is associated with a reduced risk of schizophrenia in men, and the GTAGCC haplotype [5 SNP NTRK2 and 1 rs6265-C (V64V) SNP of the BDNF gene] is associated with a reduced risk of it in women (Suchanek-Raif et al., 2020). This evidence concerns the gene BDNF and schizophrenia.