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Applying polygenic risk scoring for psychiatric disorders to a large family with bipolar disorder and major depressive disorder
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2018 (English)In: Communications Biology, ISSN 2399-3642, Vol. 1, article id 163Article in journal (Refereed) Published
Abstract [en]

Psychiatric disorders are thought to have a complex genetic pathology consisting of interplay of common and rare variation. Traditionally, pedigrees are used to shed light on the latter only, while here we discuss the application of polygenic risk scores to also highlight patterns of common genetic risk. We analyze polygenic risk scores for psychiatric disorders in a large pedigree (n ~ 260) in which 30% of family members suffer from major depressive disorder or bipolar disorder. Studying patterns of assortative mating and anticipation, it appears increased polygenic risk is contributed by affected individuals who married into the family, resulting in an increasing genetic risk over generations. This may explain the observation of anticipation in mood disorders, whereby onset is earlier and the severity increases over the generations of a family. Joint analyses of rare and common variation may be a powerful way to understand the familial genetics of psychiatric disorders.

Place, publisher, year, edition, pages
Nature Publishing Group, 2018. Vol. 1, article id 163
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Psychiatry
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URN: urn:nbn:se:umu:diva-157800DOI: 10.1038/s42003-018-0155-yISI: 000461126500163PubMedID: 30320231OAI: oai:DiVA.org:umu-157800DiVA, id: diva2:1301715
Available from: 2019-04-02 Created: 2019-04-02 Last updated: 2019-04-02Bibliographically approved

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Adolfsson, RolfNordin Adolfsson, Annelie

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Mattheisen, ManuelAndlauer, Till F. M.Buttenschon, Henriette N.Grove, JakobMbarek, HamdiPosthuma, DanielleQvist, PerViktorin, AlexanderWebb, Bradley T.Domenici, EnricoKloiber, StefanDjurovic, SrdjanGrigoroiu-Serbanescu, MariaAdolfsson, RolfNordin Adolfsson, AnnelieMcQuillin, Andrew
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CiteExportLink to record
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  • apa
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