CLEC4M was successfully knocked down in the human lung cancer cell lines A549 and H1299 (Figure 2A, 2B, 2E and 2F); we also observed a remarkable increase in CLEC4M expression at both the mRNA and protein levels, which demonstrated that CLECM was successfully overexpressed (Figure 2C, 2D, 2G and 2H). This evidence concerns the gene CLEC4M and lung carcinoma.