PMID- 16854566 OWN - NLM STAT- MEDLINE DCOM- 20070126 LR - 20221207 IS - 0920-9964 (Print) IS - 0920-9964 (Linking) VI - 87 IP - 1-3 DP - 2006 Oct TI - No evidence for an association between the BDNF Val66Met polymorphism and schizophrenia or personality traits. PG - 45-7 AB - Brain-derived neurotrophic factor (BDNF) is a member of the nerve growth factor family, which plays a critical role in neurodevelopment. Based on the neurodevelopmental hypothesis, the BDNF gene has been a candidate locus for schizophrenia. In Caucasians, recent studies identified an association with the Val66Met polymorphism, which has been suggested to affect episodic memory and hippocampal function in humans. However, in other populations, the association has not been replicated. In the present study, we investigated the association between the Val66Met polymorphism of the gene and schizophrenia in 401 Japanese patients with schizophrenia and 569 controls. As a result, we did not observe a significant difference in genotypic distribution or allele frequencies between the patients and controls (chi2=0.56, df=2, p=0.76 and chi2=0.39, df=1, p=0.53, respectively). We also investigated the association between the polymorphism and personality traits in the controls; however, no significant association was observed. Thus, the present study did not provide evidence for an association between the BDNF gene and schizophrenia or personality traits in the Japanese population. FAU - Tochigi, Mamoru AU - Tochigi M AD - Department of Neuropsychiatry, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo113-8655, Japan. FAU - Otowa, Takeshi AU - Otowa T FAU - Suga, Motomu AU - Suga M FAU - Rogers, Mark AU - Rogers M FAU - Minato, Takanobu AU - Minato T FAU - Yamasue, Hidenori AU - Yamasue H FAU - Kasai, Kiyoto AU - Kasai K FAU - Kato, Nobumasa AU - Kato N FAU - Sasaki, Tsukasa AU - Sasaki T LA - eng PT - Journal Article DEP - 20060718 PL - Netherlands TA - Schizophr Res JT - Schizophrenia research JID - 8804207 RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Asian People/genetics MH - Brain-Derived Neurotrophic Factor/*genetics MH - Female MH - Gene Expression/*genetics MH - Humans MH - Male MH - Middle Aged MH - Personality Disorders/diagnosis/etiology/*genetics MH - Personality Inventory MH - Polymorphism, Genetic/*genetics MH - Schizophrenia/*genetics MH - *Schizophrenic Psychology EDAT- 2006/07/21 09:00 MHDA- 2007/01/27 09:00 CRDT- 2006/07/21 09:00 PHST- 2006/04/03 00:00 [received] PHST- 2006/06/13 00:00 [revised] PHST- 2006/06/18 00:00 [accepted] PHST- 2006/07/21 09:00 [pubmed] PHST- 2007/01/27 09:00 [medline] PHST- 2006/07/21 09:00 [entrez] AID - S0920-9964(06)00295-7 [pii] AID - 10.1016/j.schres.2006.06.029 [doi] PST - ppublish SO - Schizophr Res. 2006 Oct;87(1-3):45-7. doi: 10.1016/j.schres.2006.06.029. Epub 2006 Jul 18.