ACE2 and lung carcinoma: We also analyzed the expression of ACE2 in resection margin tissues of lung cancer survivors and normal lung tissues from general individuals using TCGA (n = 110) and GTEx (n = 288) databases and found that the mRNA expression of ACE2 was higher in lung cancer patients than in general individuals (Wilcoxon’s rank-sum test, P = 0.013) (Figure 1H).