VSNL1 and non-small cell lung carcinoma: To determine whether the absence of VILIP-1 expression in NSCLC cells, which have high degree of DNA methylation in the proximal 2 kb VILIP-1 promoter, could be changed, we treated cells with 5′-Aza-dC for 5 days and evaluated the expression of VILIP-1 (Figure 3D).