Similarly, no differences in ACE2 or TMPRSS2 expressions were found in A549 human lung epithelial cancer cells, Caco-2 human colon epithelial cancer cells, and mouse Lewis lung carcinoma cells after a 24-h GPR4 antagonist treatment (Supplementary Figures S7B-D). The gene discussed is ACE2; the disease is Carcinoma, Lewis Lung.