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Article Abstract
Whether all obesity-related variants contribute to the onset of obesity or one or a few variants cause obesity in genetically heterogeneous populations remains obscure. Here, we investigated the genetic architecture of obesity by clustering the Japanese and British populations with obesity using obesity-related factors. In Step-1, we conducted a genome-wide association study (GWAS) with body mass index (BMI) as the outcome for eligible participants. In Step-2, we assigned participants with obesity (BMI ≥25 kg/m) to five clusters based on obesity-related factors. Subsequently, participants from each cluster and those with a BMI <25 kg/m were combined. A GWAS was conducted for each cluster. Several previously identified obesity-related genes were verified in Step-1. Of the genes detected in Step-1, unique obesity-related genes were detected separately for each cluster in Step-2. Our novel findings suggest that a smaller sample size with increased homogeneity may provide insights into the genetic architecture of obesity.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11379603 | PMC |
| http://dx.doi.org/10.1016/j.heliyon.2024.e36023 | DOI Listing |
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