HNF4A and neoplasm: Inhibition of Hnf4 in oenocytes of Yki flies (Esg-LexA>yki3SA; PromE>Hnf4-i) for 3 days showed a decrease in pH3+ staining compared to controls (Esg> UAS-yki3SA), and a slower growth rate for tumor (Figure 1G).