The top 20 genes were regarded as melanoma genes (CDKN2A, MC1R, NRAS, MITF, PTEN, TERT, POT1, BRAF, TP53, TYR, CDK4, MLANA, PMEL, IL2, ERCC2, IFNG, TNF, PTGS2, CDKN2B, TYRP1). The gene discussed is CDKN2A; the disease is melanoma.