 Presentations highlight potential of the oral MDM2 inhibitor, milademetan, in advanced cancers with MDM2 amplification, GATA3 mutant ER-positive breast cancer, and Merkel cell carcinoma Presentations highlight potential of the oral MDM2 inhibitor, milademetan, in advanced cancers with MDM2 amplification, GATA3 mutant ER-positive breast cancer, and Merkel cell carcinoma 