RGS4 is not a susceptibility gene for schizophrenia in Japanese: Association study in a large case-control population

H. Ishiguro, Y. Horiuchi, M. Koga, T. Inada, N. Iwata, N. Ozaki, H. Ujike, T. Muratake, T. Someya, T. Arinami

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The regulator of the G-protein signaling 4 (RGS4) has been implicated in the susceptibility to schizophrenia. RGS4 interacts with ErbB3 that acts as receptors for neuregulin 1 and these proteins may play a role in the pathogenesis of schizophrenia via glutamatergic dysfunction. Recently, two meta-analysis studies provided different interpretations for the genetic association between RGS4 and schizophrenia. We attempted to confirm this association in a case-control study of 1918 Japanese patients with schizophrenia and 1909 Japanese control subjects. Four widely studied single nucleotide polymorphisms (SNPs) were genotyped, and none showed association with schizophrenia. SNP 1 (rs10917670), p = 0.92; SNP 4 (rs951436), p = 0.91; SNP 7 (rs951439), p = 0.27; and SNP 18 (rs2661319), p = 0.43. A haplotype block constructed by these SNPs spans the 5′ flanking region to the 5′ mid-region of the RGS4 gene. Previous meta-analysis showed that both two major haplotypes of this block were risk haplotypes. The two common haplotypes were observed in the Japanese population. However, neither haplotype was significantly associated with schizophrenia. We conclude that the common haplotypes and SNPs of the RGS4 gene identified thus far are unlikely to contribute to the genetic susceptibility to schizophrenia in the Japanese population.

Original languageEnglish
Pages (from-to)161-164
Number of pages4
JournalSchizophrenia Research
Issue number1-3
Publication statusPublished - 01-01-2007


All Science Journal Classification (ASJC) codes

  • Psychiatry and Mental health
  • Biological Psychiatry

Cite this

Ishiguro, H., Horiuchi, Y., Koga, M., Inada, T., Iwata, N., Ozaki, N., Ujike, H., Muratake, T., Someya, T., & Arinami, T. (2007). RGS4 is not a susceptibility gene for schizophrenia in Japanese: Association study in a large case-control population. Schizophrenia Research, 89(1-3), 161-164. https://doi.org/10.1016/j.schres.2006.09.015