Health Disparities

Asthma is a common, complex, and chronic disease that is characterized by inflammation of the airways, airway hyperresponsiveness, and bronchospasms. It has major health disparities, and unfortunately populations that bear the greatest burden of disease are minimally represented in genomics research. The Consortium on Asthma among African-ancestry Populations in the Americas (CAAPA) seeks to discover genes and mechanisms conferring risk to asthma in populations of African ancestry, utilizing multi-omic data. A multi-omics approach in nasal epithelium using RNASeq and DNA methylation in CAAPA led to the confirmation of well-known T2 mechanisms in asthma risk, but also identified novel wound healing and medication response signatures, providing new information about the biological mechanisms underlying asthma in the underrepresented African ancestry populations. We have a greatly expanded opportunity including serum proteomics, RNASeq on PBMCs, and additional DNA methylation to test if an expanded systems biology / integrative omics approach can further refine axes of dysregulation in CAAPA and develop models to predict asthma endotypes that are derived off ‘local’ and ‘systemic’ signatures of asthma pertaining to the nasal epithelium and serum/PBMCs, respectively.