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Impact on the Risk and Severity of Childhood Onset Schizophrenia of Schizophrenia Risk Genetic Variants at the DRD2 and ZNF804A Loci

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Abstract

The study explored whether schizophrenia risk alleles of the DRD2 rs2514218 and ZNF804A rs1344706 polymorphisms also influenced the risk and severity of childhood-onset schizophrenia (COS) and differentiated it from autism spectrum disorders (ASD). We compared 75 children with COS to 75 children with ASD, 150 patients with adult-onset schizophrenia and 150 healthy individuals. Frequency of the DRD2 T-allele, assumed to be protective against schizophrenia overall, was higher in COS compared to adult-onset schizophrenia and healthy controls. The risk allele A of ZNF804A was associated with greater severity of negative symptoms in COS. The latter result is consistent with the involvement of ZNF804A in the development of severe forms of schizophrenia. The findings regarding DRD2 suggest that the same genetic variants may play different roles in schizophrenia with childhood and adult onset. This warrants further research, since D2 receptor blockade is a general pharmacodynamic property of antipsychotics.

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Authors and Affiliations

  1. Department of Clinical Genetics, Mental Health Research Center, Moscow, Russia

    Margarita V. Alfimova, Tatyana V. Lezheiko & Vera E. Golimbet

  2. Department of Child Psychiatry, Mental Health Research Center, Moscow, Russia

    Svetlana G. Nikitina & Nataliya V. Simashkova

Authors
  1. Margarita V. Alfimova
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  2. Svetlana G. Nikitina
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  3. Tatyana V. Lezheiko
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  4. Nataliya V. Simashkova
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  5. Vera E. Golimbet
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Correspondence to Margarita V. Alfimova.

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All procedures were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards

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Alfimova, M.V., Nikitina, S.G., Lezheiko, T.V. et al. Impact on the Risk and Severity of Childhood Onset Schizophrenia of Schizophrenia Risk Genetic Variants at the DRD2 and ZNF804A Loci. Child Psychiatry Hum Dev 54, 241–247 (2023). https://doi.org/10.1007/s10578-021-01245-z

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