Moving on to inflammation, we found several studies covering this subject; for example, Manell et al. employed the proximity extension assay (PEA) to quantify 113 inflammation-related proteins, identifying IL-33, IL-17C, and FGF-23 as potential biomarkers in adolescents with both asthma and obesity [104]. The gene discussed is FGF23; the disease is obesity due to melanocortin 4 receptor deficiency.