Several mechanisms have been shown to downregulate or inactivate type I IFN responses in cancer cells, including IFN signaling inhibition by MEK/extracellular signal-regulated kinase (ERK) signaling (72) or epigenetic silencing of the IFN-responsive transcription factor interferon regulatory factor 7 (IRF7) or IRF5 (73). This evidence concerns the gene MAP2K7 and cancer.