Effective co-delivery of siRNA–VEGF andetoposide resulted in suppression of angiogenesis and metastasis oflung cancer cells.361 Another oncogenein lung cancer cells is the enhancer of zeste homologue 2 (EZH2) belongingto the family of the Polycomb Group (PcG) gene. The gene discussed is EZH2; the disease is lung carcinoma.