TAAR1 is responsive to a class of biogenic compounds called trace amines (TAs), such as tyramine (TYR), β-phenylethylamine (β-PEA), and 3-iodothyronamine (T1AM), whose dysregulation was correlated to the etiology of various diseases, like schizophrenia, depression, attention deficit hyperactivity disorder, substance abuse, metabolic syndrome, and Parkinson’s disease [3,6,7,8,9,10,11]. The gene discussed is TAAR1; the disease is schizophrenia.