IL6 and COVID-19: So far, the cytokine profile including IL‐2, IL‐6, IL‐7, granulocyte colony‐stimulating factor, interferon‐γ, inducible protein 10, monocyte chemoattractant protein 1, macrophage inflammatory protein 1‐α, and tumor necrosis factor‐α has been considered to be associated with the severity of COVID‐19.18