Volume 88, Issue 2 pp. 164-167
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14-3-3 protein η chain gene (YWHAH) polymorphism and its genetic association with schizophrenia

Kazuhiko Toyooka

Kazuhiko Toyooka

National Saigata Hospital, Saigata, Ogata, Japan

Department of Psychiatry, Niigata University School of Medicine, Asahimachi, Niigata, Japan

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Tatsuyuki Muratake

Corresponding Author

Tatsuyuki Muratake

National Saigata Hospital, Saigata, Ogata, Japan

Department of Psychiatry, Niigata University School of Medicine, Asahimachi, Niigata, Japan

Department of Psychiatry, Niigata University School of Medicine, Asahimachi, Niigata 951-8510, JapanSearch for more papers by this author
Toshihisa Tanaka

Toshihisa Tanaka

Department of Psychiatry, Niigata University School of Medicine, Asahimachi, Niigata, Japan

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Shuichi Igarashi

Shuichi Igarashi

Department of Neurology, Brain Research Institute, Niigata University, Asahimachi, Niigata, Japan

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Hiromi Watanabe

Hiromi Watanabe

National Saigata Hospital, Saigata, Ogata, Japan

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Hiromori Takeuchi

Hiromori Takeuchi

National Saigata Hospital, Saigata, Ogata, Japan

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Shigenobu Hayashi

Shigenobu Hayashi

National Saigata Hospital, Saigata, Ogata, Japan

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Masaya Maeda

Masaya Maeda

Department of Psychiatry, Niigata University School of Medicine, Asahimachi, Niigata, Japan

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Makoto Takahashi

Makoto Takahashi

Department of Psychiatry, Niigata University School of Medicine, Asahimachi, Niigata, Japan

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Shoji Tsuji

Shoji Tsuji

Department of Neurology, Brain Research Institute, Niigata University, Asahimachi, Niigata, Japan

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Toshiro Kumanishi

Toshiro Kumanishi

Department of Molecular Neuropathology, Brain Research Institute, Niigata University, Asahimachi, Niigata, Japan

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Yasuo Takahashi

Yasuo Takahashi

National Saigata Hospital, Saigata, Ogata, Japan

Department of Molecular Neuropathology, Brain Research Institute, Niigata University, Asahimachi, Niigata, Japan

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Abstract

Recent genetic analyses have suggested a linkage between schizophrenia and the chromosomal region 22q12–q13. 14-3-3 protein, abundant in the brain, mediates interactions between diverse molecules of biological activities; its gene was recently mapped to chromosome 22q12.1–q13.1. We therefore investigated allele frequencies of a variable number of tandem repeat (VNTR) in the 5′-noncoding region of the 14-3-3 η chain gene in controls and schizophrenics. The frequencies of the two-repeat allele were significantly higher (P < 0.05) in the schizophrenics, and particularly in those with onset before age 22 (early-onset schizophrenics, P < 0.02), than in the controls. The odds ratio was significantly increased in the early-onset schizophrenics homozygous for the two-repeat allele (OR = 3.3, 95% CI = 1.1—9.7). The 14-3-3 η chain gene is a potential susceptibility gene for schizophrenia, and particularly for early-onset schizophrenia. Am. J. Med. Genet. (Neuropsychiatr. Genet.) 88:164–167, 1999. © 1999 Wiley-Liss, Inc.

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