– EEDi-5273 is an exceptionally potent and orally efficacious embryonic ectoderm development (EED) inhibitor with IC50 of 0.2 nM and inhibits the KARPAS422 cell growth with IC50 of 1.2 nM. EEDi-5273 demonstrates an excellent PK and ADME profile, and its oral administration leads to complete and persistent tumor regression in the KARPAS422 xenograft model with no signs of toxicity.