Indeed, EZH2 inhibition by siRNAs, or depletion of PRC2 components by the drug 3-deazaneplanocin A (DZNep), exerted antioncogenic effects, by blocking cell proliferation and/or inducing apoptosis [2]–[7], [11], [37], [38], by counteracting invasion and metastasis [9], [10], and by inhibiting tumor angiogenesis [8]. This evidence concerns the gene EZH2 and neoplasm.