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- W2912449204 abstract "<ns5:p><ns5:bold>Background: </ns5:bold>Sleep abnormalities are common in schizophrenia, often appearing before psychosis onset; however, the mechanisms behind this are uncertain. We investigated whether genetic risk for schizophrenia is associated with sleep phenotypes.</ns5:p><ns5:p> <ns5:bold>Methods: </ns5:bold>We used data from 6,058 children and 2,302 mothers from the Avon Longitudinal Study of Parents and Children (ALSPAC). We examined associations between a polygenic risk score for schizophrenia and sleep duration in both children and mothers, and nightmares in children, along with genetic covariances between these traits.</ns5:p><ns5:p> <ns5:bold>Results: </ns5:bold>Polygenic risk for schizophrenia was associated with increased risk of nightmares (OR=1.07, 95% CI: 1.01, 1.14, p=0.02) in children, and also with less sleep (β=-44.52, 95% CI: −88.98, −0.07; p=0.05). We observed a similar relationship with sleep duration in mothers, although evidence was much weaker (p=0.38). Finally, we found evidence of genetic covariance between schizophrenia risk and reduced sleep duration in children and mothers, and between schizophrenia risk and nightmares in children.</ns5:p><ns5:p> <ns5:bold>Conclusions:</ns5:bold> These molecular genetic results support recent findings from twin analysis that show genetic overlap between sleep disturbances and psychotic-like experiences. They also show, to our knowledge for the first time, a genetic correlation between schizophrenia liability and risk of nightmares in childhood.</ns5:p>" @default.
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- W2912449204 date "2019-08-20" @default.
- W2912449204 modified "2023-10-15" @default.
- W2912449204 title "Schizophrenia liability shares common molecular genetic risk factors with sleep duration and nightmares in childhood" @default.
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- W2912449204 doi "https://doi.org/10.12688/wellcomeopenres.15060.2" @default.
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