Since large allelic frequencies variations of the rs6265 SNP have been reported in population of different ethnic origins, it has been proposed that a yet unidentified causal variant could possibly lie within or nearby BDNF. On the other hand, literature data about miR-26a and miR-26b pointed out some evidences about the role of these miRNAs in brain functions, such as stress response [70], and in schizophrenia susceptibility [71]–[72]. The gene discussed is BDNF; the disease is schizophrenia.