The 20 most frequently selected genes were TCF21, TBX5, EMX20S, EMX2, PA2G4P4, HNF1B, ATP5EP2, NACA2, PTTG3P, FTH1P3, SFTPA1, HSPB1P1, GATA3, NAPSA, ANXA2P3, IGPB1P1, HOXA9, STFA3, RPL19P12, and SFTPA2. A heatmap representation of the relative expression levels of the top 50 genes across all 9096 tumor samples is shown in Fig. 3. This evidence concerns the gene NACA2 and neoplasm.