AVP and attention deficit-hyperactivity disorder: PPM1H is associated with neurological disorders such as ADHD [39] and endocrine diseases, while AVPR1A (Arginine Vasopressin) is a 7-transmembrane domain G-protein polypeptide that was reported to be involved in many neurological functions, including aggression, bonding, sex behavior, autism, and schizophrenia [40].