ArticlePediatric pulmonology2025
Identifying the Genetic Ancestry of the Pediatric Obesity-Related Asthma Variant (rs6494395) at Rps27l.
Article in Pediatric pulmonology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Authors and funding
6 authors.
Funding
Abstract
backgroundObesity-related asthma (OA) is a severe asthma endotype that disproportionately affects children from minority ethnic groups. We previously identified downregulation of RPS27L (40S ribosomal protein S27-like) in CD4+ (T-helper) cells from children with OA compared to cells from healthy-weight asthma that was associated with the C allele at the rs6494395 locus. Consistent with elevated allele frequencies in populations with Latino and African ancestries, we found a higher allele frequency of rs6494395 in Hispanic/Latino and African American children with OA.
aimsWe tested the hypothesis that rs6494395 alleles have ancestry-specific origins. MATERIALS AND
methodsWe performed global genomic ancestry analysis using the program ADMIXTURE to characterize the proportions of continental genetic ancestry in each individual. Subsequently, we performed local genomic ancestry analysis using the program RFMix, to identify the ancestry of the genomic region containing the variant rs6494395 in the same multi-ethnic pediatric cohort where the effect of the variant on obese-related asthma was discovered.
resultsOur results indicate that rs6494395 has an African genetic ancestral origin.
conclusionsUnderstanding the genetic underpinnings of pediatric OA in diverse populations can improve precision medicine approaches and address health disparities in asthma outcomes.
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