Also, we were able to detect an overlap of six DEGs among the autism spectrum disorder, schizophrenia and bipolar disorder datasets: RAB2A (Member RAS Oncogene Family), RAD23B (RAD23 homolog B, nucleotide excision repair protein), LGALS8 (Galectin-8), PIAS1 (Protein Inhibitor of Activated STAT 1), PDP1 (Pyruvate Dehydrogenase Phosphatase Catalytic Subunit 1), and CHD9 (Chromodomain Helicase DNA Binding Protein 9). This evidence concerns the gene RAB2A and bipolar disorder.