Kuschert et al. (1999) Glycosaminoglycans activate chemokines, triggering them to mobilise and recruit various immune cells. Chemokine receptors belong to the G protein coupled receptor superfamily and recruit dendritic cells. Murdoch and Finn (2000) The findings from our pathway analysis implicate that certain chemokine receptors are common between T2D and COVID-19, namely, CCR2 and CCR3. Previous studies have shown that some chemokine receptors, including CCR2, are involved in the pathogenesis of COVID-19 and of T2D. (Coperchini et al., 2020; Lim et al., 2021). This evidence concerns the gene CCR2 and type 2 diabetes mellitus.