Fifteen EMT genes (MMP3, ITGAV, KRT14, PLEK2, SNAI2, GSK3B, ITGB1, MAP1B, TCF3, VPSA13, SMAD2, MMP2, SPARC, WNT5A, and ITGA5) were differently expressed, mainly in SCLC. Here, SNAI2 is linked to small cell lung carcinoma.