title: Replication study of association between ADCYAP1 gene polymorphisms and schizophrenia.
abstract: The adenylate cyclase-activating polypeptide 1 (ADCYAP1) gene encodes a neuropeptide with neurotransmission activity, which is known as the pituitary adenylate cyclase-activating polypeptide. Associations of two polymorphisms, rs1893154 and rs2856966 (Asp54Gly), in the ADCYAP1 gene with schizophrenia were reported earlier by a Japanese case-control study. In this study, we tried to confirm the association in 2027 Japanese patients with schizophrenia and 2058 controls. The power to detect an association was more than 0.9. However, we did not detect allelic associations of rs1893154 with schizophrenia (P=0.36). Although rs2856966 was nominally significant (P=0.045), the association was in the opposite direction from that reported earlier. Combined data and meta-analysis of the two studies comprising nearly 6000 Japanese case-control patients did not show significant associations (P=0.53-0.86). It is concluded that single-nucleotide polymorphisms, including Asp54Gly, of the ADCYAP1 gene are unlikely to play a sizeable role in the genetic susceptibility to schizophrenia.
authors.affiliation: Department of Medical Genetics, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
authors.forename: Minori
authors.initials: M
authors.lastname: Koga
authors.forename: Hiroki
authors.initials: H
authors.lastname: Ishiguro
authors.forename: Yasue
authors.initials: Y
authors.lastname: Horiuchi
authors.forename: Toshiya
authors.initials: T
authors.lastname: Inada
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ujike
authors.forename: Masanari
authors.initials: M
authors.lastname: Itokawa
authors.forename: Takeshi
authors.initials: T
authors.lastname: Otowa
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Watanabe
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Someya
authors.forename: Tadao
authors.initials: T
authors.lastname: Arinami
mesh_terms: D000483:Alleles; D044466:Asian People / Q000235:genetics; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D051219:Pituitary Adenylate Cyclase-Activating Polypeptide / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000235:genetics*
chemical_list: C495401:ADCYAP1 protein, human; D051219:Pituitary Adenylate Cyclase-Activating Polypeptide