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Mapping Pathways by Which Genetic Risk Influences Adolescent Externalizing Behavior: The Interplay Between Externalizing Polygenic Risk Scores, Parental Knowledge, and Peer Substance Use.
Kuo, Sally I-Chun; Salvatore, Jessica E; Barr, Peter; Aliev, Fazil; Anokhin, Andrey; Bucholz, Kathleen K; Chan, Grace; Edenberg, Howard J; Hesselbrock, Victor; Kamarajan, Chella; Kramer, John R; Lai, Dongbing; Mallard, Travis T; Nurnberger, John I; Pandey, Gayathri; Plawecki, Martin H; Sanchez-Roige, Sandra; Waldman, Irwin; Palmer, Abraham A; Dick, Danielle M
Journal Title
Behavior genetics
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2021-06-12
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51
Publication Issue
5
Publication Begin
543
Publication End
558
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nihms-1729271.pdf
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Abstract
Genetic predispositions and environmental influences both play an important role in adolescent externalizing behavior; however, they are not always independent. To elucidate gene-environment interplay, we examined the interrelationships between externalizing polygenic risk scores, parental knowledge, and peer substance use in impacting adolescent externalizing behavior across two time-points in a high-risk longitudinal sample of 1,200 adolescents (764 European and 436 African ancestry; M = 12.99) from the Collaborative Study on the Genetics of Alcoholism. Results from multivariate path analysis indicated that externalizing polygenic scores were directly associated with adolescent externalizing behavior but also indirectly via peer substance use, in the European ancestry sample. No significant polygenic association nor indirect effects of genetic risk were observed in the African ancestry group, likely due to more limited power. Our findings underscore the importance of gene-environment interplay and suggest peer substance use may be a mechanism through which genetic risk influences adolescent externalizing behavior.
Citation
Kuo SI, Salvatore JE, Barr PB, Aliev F, Anokhin A, Bucholz KK, Chan G, Edenberg HJ, Hesselbrock V, Kamarajan C, Kramer JR, Lai D, Mallard TT, Nurnberger JI Jr, Pandey G, Plawecki MH, Sanchez-Roige S, Waldman I, Palmer AA; Externalizing Consortium, Dick DM. Mapping Pathways by Which Genetic Risk Influences Adolescent Externalizing Behavior: The Interplay Between Externalizing Polygenic Risk Scores, Parental Knowledge, and Peer Substance Use. Behav Genet. 2021 Sep;51(5):543-558. doi: 10.1007/s10519-021-10067-7. Epub 2021 Jun 12. PMID: 34117972; PMCID: PMC8403154.