Nine p53 target genes were analyzed in TSC2+/−Eμ-Myc and p53−/− Eμ-Myc lymphomas, INK4A−/− and p53−/− MEFs, and HCT116 p53+/+ and p53−/− cells, six days after transduction with control or DHX9 shRNAs. The gene discussed is CDKN2A; the disease is lymphoma.