Duplications of the neuropeptide receptor gene VIPR2 confer significant risk for schizophrenia.
Iakoucheva, Lilia M
Welsh, David K
Kelsoe, John R
Gershon, Elliot S
Leal, Suzanne M
Dell Aquila, Marie
Morris, Derek W
Insel, Paul A
Levy, Deborah L
DeLisi, Lynn E
AffiliationStanley Institute for Cognitive Genomics, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 12824, USA.
Chromosomes, Human, Pair 7
DNA Copy Number Variations
Genetic Predisposition to Disease
Genome-Wide Association Study
Receptors, Vasoactive Intestinal Peptide, Type II
Reproducibility of Results
MetadataShow full item record
CitationDuplications of the neuropeptide receptor gene VIPR2 confer significant risk for schizophrenia. 2011, 471 (7339):499-503 Nature
AbstractRare copy number variants (CNVs) have a prominent role in the aetiology of schizophrenia and other neuropsychiatric disorders. Substantial risk for schizophrenia is conferred by large (>500-kilobase) CNVs at several loci, including microdeletions at 1q21.1 (ref. 2), 3q29 (ref. 3), 15q13.3 (ref. 2) and 22q11.2 (ref. 4) and microduplication at 16p11.2 (ref. 5). However, these CNVs collectively account for a small fraction (2-4%) of cases, and the relevant genes and neurobiological mechanisms are not well understood. Here we performed a large two-stage genome-wide scan of rare CNVs and report the significant association of copy number gains at chromosome 7q36.3 with schizophrenia. Microduplications with variable breakpoints occurred within a 362-kilobase region and were detected in 29 of 8,290 (0.35%) patients versus 2 of 7,431 (0.03%) controls in the combined sample. All duplications overlapped or were located within 89 kilobases upstream of the vasoactive intestinal peptide receptor gene VIPR2. VIPR2 transcription and cyclic-AMP signalling were significantly increased in cultured lymphocytes from patients with microduplications of 7q36.3. These findings implicate altered vasoactive intestinal peptide signalling in the pathogenesis of schizophrenia and indicate the VPAC2 receptor as a potential target for the development of new antipsychotic drugs.
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