Obsessive-Compulsive Personality Disorder, also known as obsessive-compulsive personality, is related to personality disorder and avoidant personality disorder. An important gene associated with Obsessive-Compulsive Personality Disorder is PIR (Pirin), and among its related pathways/superpathways are Selective Serotonin Reuptake Inhibitor Pathway, Pharmacodynamics and Neurotransmitter clearance. The drugs Dopamine and Risperidone have been mentioned in the context of this disorder. Affiliated tissues include subthalamic nucleus and brain.