CCL2 and diabetes mellitus: Inflammatory cytokines and chemokines, including IL-1β, IL-2, IL-4, IL-6, IL-7, IL-10, IL-12, IL-17, TNF-α, interferon- γ (IFNγ), interferon gamma-induced protein 10 (IP10) and monocyte chemoattractant protein-1 (MCP-1), were significantly elevated in COVID-19 patients (29–34), some of which overlap with the cytokine panel in diabetes.