This more global role for miR-409-3p fits with one additional finding in the present study: one of miR-409-3p’s targets, a risk loci in Delta-catenin 1 gene (CTNND1), was identified in a GWAS as being shared between multiple mental health disorders, and it was one of the 23 loci with the highest number of cross-disorder associations (MDD, ADHD, Autism spectrum disorder, Obsessive-compulsive disorder and Schizophrenia) [51]. The gene discussed is CTNND1; the disease is attention deficit-hyperactivity disorder.