Genes PRKCZ (Protein Kinase C Zeta), FGR (Src family protein), KDM4B, MPO, COL11A1, FUT4 (Fucosyltransferase IV), and APEH (acylpeptide hydrolase) are directly associated with tumor aggressiveness, growth, and migration, and invasiveness, resulting in poor clinical outcome in cancer patients41,46–50. The gene discussed is MPO; the disease is cancer.