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Association between RGS4 variants and psychotic-like experiences in nonclinical individuals

European Archives of Psychiatry and Clinical Neuroscience volume 267, pages 19–24 (2017)Cite this article

Abstract

The psychosis phenotype is expressed across a continuum known as schizotypy, which ranges from personality variation through subclinical symptoms to severe psychopathology. The study of subclinical manifestations in non-affected individuals minimizes confounding factors associated with the clinical phenotype and facilitates the differentiation of dimension-specific etiological mechanisms. The aim of the present study was to investigate the association between the variation in the regulator of G-protein signaling 4 (RGS4) gene, a putative candidate gene for psychosis previously associated with schizophrenia endophenotypes, and psychotic-like experiences (PLEs). In total, 808 healthy individuals completed the community assessment of psychic experiences (CAPE) to measure positive and negative PLEs and provided a DNA sample. Two RGS4 single-nucleotide polymorphisms (SNPs) (rs951436 [SNP4] and rs2661319 [SNP18]) were genotyped. Analyses of covariance (ANCOVA) were used to explore the association of positive and negative PLEs with RGS4 variation. Our results showed associations of positive and negative PLEs with the two polymorphisms studied: subjects with the T allele (SNP4) and the A allele (SNP18) had higher scores on both the positive and the negative dimensions. Haplotypic analyses supported these results, showing the highest scores in those with the TA haplotype (SNP4-SNP18). The RGS4 variants might exert gene-specific modulating effects on psychosis proneness.

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Acknowledgments

This work was funded by the Ministerio de Economía y Competitividad (PSI2011-30321-C02-01 and C02-02, and Red de Excelencia PSI2014-56303-REDT PROMOSAM: Investigación en Procesos, Mecanismos y Tratamientos Psicológicos para la Promoción de la Salud Mental), Fundació La Marató de TV3 (091110) and the Comissionat per a Universitats i Recerca of the Generalitat de Catalunya (2014SGR1070 and 2014SGR1636). N. Barrantes-Vidal is funded by the Academia Research Award (Institució Catalana de Recerca i Estudis Avançats; ICREA) from the Catalan Government.

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Affiliations

  1. Unitat d’Antropologia, Departament de Biologia Animal, Facultat de Biologia, Universitat de Barcelona (UB), Av. Diagonal 643, 08028, Barcelona, Spain

    Marta de Castro-Catala, Elionora Peña & Araceli Rosa

  2. Departament de Psicologia Clínica i de la Salut, Facultat de Psicologia, Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain

    Paula Cristóbal-Narváez, Tamara Sheinbaum & Neus Barrantes-Vidal

  3. Department of Psychology, University of North Carolina at Greensboro, Greensboro, NC, USA

    Thomas R. Kwapil & Neus Barrantes-Vidal

  4. Sant Pere Claver - Fundació Sanitària, Barcelona, Spain

    Neus Barrantes-Vidal

  5. Centro de Investigaciones Biomédicas en Red de Salud Mental (CIBERSAM), Madrid, Spain

    Neus Barrantes-Vidal & Araceli Rosa

  6. Institut de Biomedicina de la Universitat de Barcelona (IBUB), Barcelona, Spain

    Araceli Rosa

Authors
  1. Marta de Castro-Catala
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  2. Paula Cristóbal-Narváez
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  3. Thomas R. Kwapil
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  6. Neus Barrantes-Vidal
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Correspondence to Araceli Rosa.

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de Castro-Catala, M., Cristóbal-Narváez, P., Kwapil, T.R. et al. Association between RGS4 variants and psychotic-like experiences in nonclinical individuals. Eur Arch Psychiatry Clin Neurosci 267, 19–24 (2017). https://doi.org/10.1007/s00406-016-0676-7

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  • DOI: https://doi.org/10.1007/s00406-016-0676-7

Keywords

  • Psychotic-like experiences
  • Schizotypy
  • Psychosis proneness
  • RGS4 gene