There were no significant findings after adjusting for covariates in four observational studies measuring IL concentrations (IL-6 or IL-10) in non-Hispanic black type 2 diabetic and non-diabetic adults(30), Asian participants with rheumatoid arthritis(33), black adults with HIV(34) and black adults hospitalised with COVID-19(37). The gene discussed is IL10; the disease is rheumatoid arthritis.