Fig. 9From: Identification and validation of smoking-related genes in lung adenocarcinoma using an in vitro carcinogenesis model and bioinformatics analysisCorrelation analysis between promoter methylation and mRNA expression levels in lung cancer. The promoter methylation levels of these three genes obtained from UALCAN online tool, including GYPC (a), NME1 (b), and SLIT2 (c). Pearson correlation analysis shows a significant positive correlation between gene expression and promoter methylation levels in LUAD, including GYPC (d), NME1 (e), and SLIT2 (f), the red line represents linear regression of dataBack to article page