ArticlemedRxiv : the preprint server for health sciences2025
Symptoms of problematic alcohol use differ in their genetic associations with comorbid internalizing, externalizing, and neurodevelopmental psychiatric disorders.
Article in medRxiv : the preprint server for health sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and Aims: Certain symptoms of problematic alcohol use (PAU) show associations with comorbid internalizing and externalizing disorders even after controlling for their common PAU factor. Outsized associations between PAU indicators and comorbid psychopathology may reflect distinct etiologic pathways or measurement characteristics that, if unaccounted for, could bias comorbidity estimates with PAU. Although these issues could represent a source of bias in estimates of genetic correlation with PAU, no studies have yet extended this work using genomic data. Design: Genomic structural equation modeling and the Qtrait function identified PAU indicators that showed appreciable residual genetic correlations with eleven comorbid psychiatric disorders and whose associations did not operate strictly through the latent PAU factor. Setting: Genome-wide association studies (GWAS) were conducted in a variety of international locations. Participants: GWAS used in this study were conducted on 86,979 to 425,166 individuals of European ancestry. Measurements: The primary measurements were GWAS summary statistics for various forms of internalizing, externalizing, and neurodevelopmental psychiatric disorders and nine indicators from the Alcohol Use Disorder Identification Test. Findings: PAU indicators assessing alcohol-related consequences (i.e., Conclusions: Alcohol-related consequences share unique genetic underpinnings with multiple psychiatric conditions apart from what is shared with their latent problematic alcohol use factor. Thus, alcohol-related consequences may unduly reflect dysfunction from comorbid psychiatric conditions or related third variables.
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