Given previous results that RNAi-mediated reduction of dpp expression by the c587-Gal4 driver, a driver active in ECs and early follicle cells, suppressed the ovarian tumor phenotype induced by H3K4 demethylase 1-RNAi29, we next evaluated the effect of dpp knockdown in egg mutant background using the dpp-RNAi transgene and the c587-Gal4 driver. Here, LGALS4 is linked to ovarian neoplasm.