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Start Over Author "Jonsdottir GA" Topic gene silencing
2 results on '"Jonsdottir GA"'

1. Disruption of the neurexin 1 gene is associated with schizophrenia.

Author

Rujescu D, Ingason A, Cichon S, Pietiläinen OP, Barnes MR, Toulopoulou T, Picchioni M, Vassos E, Ettinger U, Bramon E, Murray R, Ruggeri M, Tosato S, Bonetto C, Steinberg S, Sigurdsson E, Sigmundsson T, Petursson H, Gylfason A, Olason PI, Hardarsson G, Jonsdottir GA, Gustafsson O, Fossdal R, Giegling I, Möller HJ, Hartmann AM, Hoffmann P, Crombie C, Fraser G, Walker N, Lonnqvist J, Suvisaari J, Tuulio-Henriksson A, Djurovic S, Melle I, Andreassen OA, Hansen T, Werge T, Kiemeney LA, Franke B, Veltman J, Buizer-Voskamp JE, Sabatti C, Ophoff RA, Rietschel M, Nöthen MM, Stefansson K, Peltonen L, St Clair D, Stefansson H, and Collier DA

Subjects
Adolescent, Adult, Calcium-Binding Proteins, Case-Control Studies, Cell Adhesion Molecules, Neuronal, Exons, Female, Gene Deletion, Gene Dosage, Gene Duplication, Genetic Predisposition to Disease, Humans, Male, Neural Cell Adhesion Molecules, White People genetics, Young Adult, Gene Silencing, Nerve Tissue Proteins genetics, Schizophrenia genetics
Abstract

Deletions within the neurexin 1 gene (NRXN1; 2p16.3) are associated with autism and have also been reported in two families with schizophrenia. We examined NRXN1, and the closely related NRXN2 and NRXN3 genes, for copy number variants (CNVs) in 2977 schizophrenia patients and 33 746 controls from seven European populations (Iceland, Finland, Norway, Germany, The Netherlands, Italy and UK) using microarray data. We found 66 deletions and 5 duplications in NRXN1, including a de novo deletion: 12 deletions and 2 duplications occurred in schizophrenia cases (0.47%) compared to 49 and 3 (0.15%) in controls. There was no common breakpoint and the CNVs varied from 18 to 420 kb. No CNVs were found in NRXN2 or NRXN3. We performed a Cochran-Mantel-Haenszel exact test to estimate association between all CNVs and schizophrenia (P = 0.13; OR = 1.73; 95% CI 0.81-3.50). Because the penetrance of NRXN1 CNVs may vary according to the level of functional impact on the gene, we next restricted the association analysis to CNVs that disrupt exons (0.24% of cases and 0.015% of controls). These were significantly associated with a high odds ratio (P = 0.0027; OR 8.97, 95% CI 1.8-51.9). We conclude that NRXN1 deletions affecting exons confer risk of schizophrenia.

Published
2009
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2. Disruption of the neurexin 1 gene is associated with schizophrenia

Author

Toulopoulou, T, Wiersma, D, Murray, R, Ruggeri, M, Tosato, S, Bonetto, C, Steinberg, S, Sigurdsson, E, Sigmundsson, T, Petursson, H, Gylfason, A, Olason, PI, Hardarsson, G, Jonsdottir, GA, Cahn, W, de Haan, L, Krabbendam, L, MyinGermeys, I, Werge, T, Kiemeney, LA, Franke, B, Pietiläinen, OPH, Picchioni, M, Vassos, E, Ettinger, U, Rietschel, M, Gustafsson, O, BuizerVoskamp, JE, Fossdal, R, Giegling, I, Sabatti, C, Ophoff, RA, Möller, HJ, Hartmann, AM, Hoffmann, P, Crombie, C, Rujescu, D, Veltman, J, Fraser, G, St Clair, D, Peltonen, L, Stefansson, K, Barnes, MR, Ingason, A, Stefansson, H, Nöthen, MM, Walker, N, Lonnqvist, J, Suvisaari, J, TuulioHenriksson, A, Djurovic, S, Collier, DA, Kahn, RS, Melle, I, Andreassen, OA, Hansen, T, Linszen, D, von Os, J, Bramon, E, Cichon, S, Bruggeman, R, ANS - Amsterdam Neuroscience, Adult Psychiatry, Germeys, Inez, Clinical Child and Family Studies, LEARN! - Brain, learning and development, and Faculteit Medische Wetenschappen/UMCG

Subjects
Male, Genetics and epigenetic pathways of disease [NCMLS 6], Gene Dosage, Aetiology, screening and detection [ONCOL 5], CARDIO-FACIAL SYNDROME, 0302 clinical medicine, Gene Duplication, Gene duplication, Perception and Action [DCN 1], HUMAN GENOME, Copy-number variation, European Continental Ancestry Group/genetics, Neural Cell Adhesion Molecules, POPULATION, Genetics (clinical), RISK, Genetics, 0303 health sciences, education.field_of_study, Schizophrenia/*genetics, REARRANGEMENTS, General Medicine, Exons, Nerve Tissue Proteins/*genetics, Penetrance, 3. Good health, Female, Molecular Sequence Numbers, Functional Neurogenomics [DCN 2], Adult, Psychosis, Adolescent, Cell Adhesion Molecules, Neuronal, Population, European Continental Ancestry Group, Nerve Tissue Proteins, COPY-NUMBER VARIATION, Biology, Gene dosage, Article, White People, STRUCTURAL VARIANTS, Genomic disorders and inherited multi-system disorders [IGMD 3], Molecular epidemiology [NCEBP 1], 03 medical and health sciences, Young Adult, Translational research [ONCOL 3], mental disorders, medicine, Humans, MICRODELETION, Genetic Predisposition to Disease, Gene Silencing, education, Molecular Biology, 030304 developmental biology, Genetic association, Hereditary cancer and cancer-related syndromes [ONCOL 1], AUTISM SPECTRUM DISORDER, Calcium-Binding Proteins, Case-Control Studies, Gene Deletion, Breakpoint, ADVANCING PATERNAL AGE, medicine.disease, Schizophrenia, 030217 neurology & neurosurgery
Abstract

Deletions within the neurexin 1 gene (NRXN1; 2p16.3) are associated with autism and have also been reported in two families with schizophrenia. We examined NRXN1, and the closely related NRXN2 and NRXN3 genes, for copy number variants (CNVs) in 2977 schizophrenia patients and 33 746 controls from seven European populations (Iceland, Finland, Norway, Germany, The Netherlands, Italy and UK) using microarray data. We found 66 deletions and 5 duplications in NRXN1, including a de novo deletion: 12 deletions and 2 duplications occurred in schizophrenia cases (0.47%) compared to 49 and 3 (0.15%) in controls. There was no common breakpoint and the CNVs varied from 18 to 420 kb. No CNVs were found in NRXN2 or NRXN3. We performed a Cochran-Mantel-Haenszel exact test to estimate association between all CNVs and schizophrenia (P = 0.13; OR = 1.73; 95% CI 0.81-3.50). Because the penetrance of NRXN1 CNVs may vary according to the level of functional impact on the gene, we next restricted the association analysis to CNVs that disrupt exons (0.24% of cases and 0.015% of controls). These were significantly associated with a high odds ratio (P = 0.0027; OR 8.97, 95% CI 1.8-51.9). We conclude that NRXN1 deletions affecting exons confer risk of schizophrenia. © The Author 2008. Published by Oxford University Press. All rights reserved., link_to_OA_fulltext

Published
2009

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