Investigation of Turner syndrome in schizophrenia |
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Authors: | Prior T I Chue P S Tibbo P |
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Affiliation: | Department of Psychiatry, University of Alberta, Edmonton, Canada. tprior@gpu.srv.ualberta.ca |
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Abstract: | Both Turner syndrome and schizophrenia are relatively infrequent conditions. Consequently, individuals having both illnesses are rare. Previous reviews of sex chromosome abnormalities in schizophrenia have focused primarily on the presence of supernumerary X-chromosomes. After identifying two female patients with schizophrenia and Turner syndrome, we reevaluated the available literature that survey female schizophrenics for the presence of chromosomal abnormalities. Eleven patients with Turner syndrome were identified among 6,483 females with schizophrenia in non-case-report studies. These survey results indicate that Turner syndrome occurs approximately three-fold more frequently in schizophrenic females than in the general female population (P < 0.02). Including 6 other case reports and our 2 cases, a total of 19 females with both schizophrenia and Turner syndrome were reported. Interestingly, whereas most Turner syndrome patients have the 45,X karyotype, the majority (18/19) of women with both illnesses have a mosaic karyotype (P < 0.0002). Given the potential role of genes on the X-chromosome in the pathogenesis of schizophrenia, the study of unique populations with abnormalities in this chromosome, such as women with Turner syndrome, may offer clues into this illness. |
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