DDX6 and T-cell non-Hodgkin lymphoma: In this regard, we identified five known or candidate cancer genes—Ddx6, Ets1, Hinfp, Mll, and Pafah1b2—whose expression is significantly upregulated in 9qA4-5.3 amplicon-bearing T cell lymphomas from Rag2−/−p53−/− mice.