PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 28443016-5 2017 Interestingly, (i) the expression of three of these six genes (COMT, DBH, NOS1) are highly variable; (ii) three of these six genes (COMT, DBH, TPH1) are involved in DA or serotonin metabolism, biosynthesis and/or neurotransmission; and (iii) five of these six genes (AR, BDNF, COMT, DBH, NOS1) have been implicated in the development, onset and/or propagation of schizophrenia. Serotonin 171-180 tryptophan hydroxylase 1 Homo sapiens 143-147