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Published in: European Archives of Psychiatry and Clinical Neuroscience 4/2021

01-06-2021 | Schizophrenia | Original Paper

Genetic risks of schizophrenia identified in a matched case–control study

Authors: Kengo Oishi, Tomihisa Niitsu, Nobuhisa Kanahara, Yasunori Sato, Yoshimi Iwayama, Tomoko Toyota, Tasuku Hashimoto, Tsuyoshi Sasaki, Masayuki Takase, Akihiro Shiina, Takeo Yoshikawa, Masaomi Iyo

Published in: European Archives of Psychiatry and Clinical Neuroscience | Issue 4/2021

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Abstract

It has been suggested that dopaminergic neurotransmission plays important roles for the psychotic symptoms and probably etiology of schizophrenia. In our recent preliminary study, we demonstrated that the specific allele combinations of dopamine-related functional single nucleotide polymorphisms (SNPs), rs10770141, rs4680, and rs1800497 could indicate risks for schizophrenia. The present validation study involved a total of 2542 individuals who were age- and sex-matched in a propensity score matching analysis, and the results supported the statistical significances of the proposed genetic risks described in our previous reports. The estimated odds ratios were 1.24 (95% CI 1.06–1.45, p < 0.001) for rs4680, 1.73 (95% CI 1.47–2.02, p < 0.0001) for rs1800497, and 1.79 (95% CI 1.35–2.36, p < 0.0001) for rs10770141. A significant relationship was also revealed among these three polymorphisms and schizophrenia, with corresponding coefficients (p < 0.0001). In this study, we also present a new scoring model for the identification of individuals with the disease risks. Using the cut-off value of 2, our model exhibited sensitivity for almost two-thirds of all of the schizophrenia patients: odds ratio 1.87, 95% CI 1.59–2.19, p < 0.0001. In conclusion, we identified significant associations of dopamine-related genetic combinations with schizophrenia. These findings suggest that some types of dopaminergic neurotransmission play important roles for development of schizophrenia, and this type of approach may also be applicable for other multifactorial diseases, providing a potent new risk predictor.
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Metadata
Title
Genetic risks of schizophrenia identified in a matched case–control study
Authors
Kengo Oishi
Tomihisa Niitsu
Nobuhisa Kanahara
Yasunori Sato
Yoshimi Iwayama
Tomoko Toyota
Tasuku Hashimoto
Tsuyoshi Sasaki
Masayuki Takase
Akihiro Shiina
Takeo Yoshikawa
Masaomi Iyo
Publication date
01-06-2021
Publisher
Springer Berlin Heidelberg
Keyword
Schizophrenia
Published in
European Archives of Psychiatry and Clinical Neuroscience / Issue 4/2021
Print ISSN: 0940-1334
Electronic ISSN: 1433-8491
DOI
https://doi.org/10.1007/s00406-020-01158-3

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