1. Identification of rare mutations of the vasoactive intestinal peptide receptor 2 gene in schizophrenia.
- Author
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Chen CH, Cheng MC, Hu TM, Ping LY, Kushima I, and Aleksic B
- Subjects
- DNA Copy Number Variations, Genetic Predisposition to Disease, Humans, Mutation, Taiwan, Receptors, Vasoactive Intestinal Peptide, Type II genetics, Schizophrenia genetics
- Abstract
Objective: Studies showed that rare copy number variations (CNVs) encompassing the vasoactive intestinal peptide receptor 2 gene (VIPR2) were associated with schizophrenia, indicating VIPR2 is a risk gene for schizophrenia. We hypothesized that besides CNV, rare pathogenic single-nucleotide variant (SNV) or small insertion/deletion (Indel) of VIPR2 might be present in some patients and contribute to the pathogenesis of schizophrenia., Methods: We performed genome-wide CNV analysis to screen CNV at the VIPR2 locus and targeted sequencing of all the exons of VIPR2 to search for SNV and indel in a sample of patients with chronic schizophrenia from Taiwan., Results: We detected a 230-kb microduplication encompassing the VIPR2 in 1 out of 200 patients. Furthermore, we identified six ultrarare SNVs, including one splicing SNV and five missense SNVs, in 516 patients. In-silico analyses showed these SNVs had a damaging effect on the function of VIPR2., Conclusion: Our findings support the idea that besides CNV, rare pathogenic SNVs of VIPR2 might contribute to the pathogenesis of schizophrenia in some patients., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2022
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