Applying polygenic risk scoring for psychiatric disorders to a large family with bipolar disorder and major depressive disorder



de Jong, Simone, Abdalla Diniz, Mateus Jose, Saloma, Andiara, Gadelha, Ary, Santoro, Marcos L, Ota, Vanessa K, Noto, Cristiano, Curtis, Charlesg, Newhouse, Stephen J, Patel, Hamel
et al (show 362 more authors) (2018) Applying polygenic risk scoring for psychiatric disorders to a large family with bipolar disorder and major depressive disorder. COMMUNICATIONS BIOLOGY, 1 (1). 163-.

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Abstract

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 (<i>n</i> ~ 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.

Item Type: Article
Uncontrolled Keywords: Major Depressive Disorder and Bipolar Disorder Working Groups of the Psychiatric Genomics Consortium
Depositing User: Symplectic Admin
Date Deposited: 06 Dec 2019 11:24
Last Modified: 19 Jan 2023 00:13
DOI: 10.1038/s42003-018-0155-y
Open Access URL: https://doi.org/10.1038/s42003-018-0155-y
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3065166