EED226

EED226 is a potent, selective, and orally bioavailable EED inhibitor. induces robust and sustained tumor regression in EZH2MUT preclinical DLBCL model. EED226 induces a conformational change upon binding EED, leading to loss of PRC2 activity. EED226 shows similar activity to SAM-competitive inhibitors in blocking H3K27 methylation of PRC2 target genes and inducing regression of human lymphoma xenograft tumors. Interestingly, EED226 also effectively inhibits PRC2 containing a mutant EZH2 protein resistant to SAM-competitive inhibitors. EED226 inhibits PRC2 activity via an allosteric mechanism and offers an opportunity for treatment of PRC2-dependent cancers. demonstrated very impressive antitumor activities in mouse xenograft model.