Based on the finding of a relevant fraction of ERG/Sp1 co-regulated genes among the ERG activated targets in ERG-fusion positive tumor, we tested the activity of a novel DNA binding and Sp1 interfering compound, demycarosyl-3D-β-D-digitoxosyl-mithramycin SK (EC-8042), in ERG positive models (47). This evidence concerns the gene SP1 and neoplasm.