SORCS3 and major depressive disorder: One gene, Sortilin related VPS10 domain containing receptor 3 (SORCS3), was associated with schizophrenia and two of the additional disorders—ADHD and MDD (PSZ = 2.91 × 10−8, PADHD = 1.51 × 10−9, and PMDD = 5.66 × 10−8).