Furthermore, SGK1 participates in the regulation of dendrite growth (Lang et al., 2006) and long-term memory formation (Ma et al., 2006) and contributes to the pathophysiology of several neuronal diseases including Parkinson’s disease, Alzheimer’s disease, schizophrenia, and depression (Lang et al., 2010; Miyata et al., 2015). This evidence concerns the gene SGK1 and major depressive disorder.