Among the 100 top-ranked discriminative genes for “normal” samples using GA/KNN, only 18 were in common with the top 100 discriminative genes from tumor samples (C11orf9, EMX2, EMX20S, ESR1, FOXF1, FTHL3, GAL3ST1, HAND2, HOXA11, HOXA11AS, HOXA9, IRX5, NACA2, NBLA00301, PA2G4P4, SFTPD, TBX5, and TCF21). This evidence concerns the gene PA2G4P4 and neoplasm.