Trios GWAS

This study aims to understand how genetic factors influence various human traits by comparing genetic associations observed within families to those seen in broader populations. Genetic associations identified in typical large-scale studies may reflect factors like parental influence, assortative mating (where individuals select partners with similar traits), and broader demographic effects. These factors can bias results, making it challenging to interpret the true genetic causes of traits.
To tackle this, researchers are using genetic data from parent-child groups (trios and duos) across multiple studies to conduct Genome-Wide Association Studies (GWAS). They will analyse a range of traits, including physical characteristics (height, weight), cognitive abilities (educational performance), psychological aspects (personality traits, emotional wellbeing), and lifestyle behaviours (smoking, alcohol use).
The research will specifically compare results from analyses performed without adjusting for parental genetics to those controlling for parental genetic influences. By doing this, researchers hope to distinguish between genetic effects directly inherited by children and those indirectly influenced by parental and family environments.
Participating studies will use standardized methods and scripts provided by the research team to ensure consistency. The genetic data used must meet specific quality standards, including being comprehensively genotyped and accurately imputed to reference genetic panels.
Ultimately, this study aims to clarify the extent to which familial and demographic factors affect genetic association results, which can improve our understanding of genetic influences on human health and behaviour.