A–D TFAP2A transcript levels between normal tissues and tumor tissues in LUAD datasets (GSE10072, GSE32863, GSE43458 and TCGA-LUAD). E IHC staining for TFAP2A protein levels in four paired normal tissues and tumor tissues in LUAD-TMA. F TFAP2A IHC scoring of 127 paired normal and tumor tissues in LUAD-TMA. G Statistical analysis of TFAP2A protein level (IHC scoring) in LUAD-TMA. *p < 0.05; **p < 0.01; ***p < 0.001. Data are presented through boxplots.