However, across schizophrenia subtypes (residual, disorganized, and paranoid), these levels differed between the disorganized and paranoid subtypes and between disorganized schizophrenia and healthy subjects, prompting the authors to conclude that DRD3 mRNA could be used as a peripheral marker of schizophrenia subtype [236]. The gene discussed is DRD3; the disease is schizophrenia.