Purpose: Dedifferentiated liposarcoma (DDLPS) is an aggressive malignancy that can recur locally or disseminate even after multidisciplinary care. Genetically amplified and expressed MDM2, often referred to as a "hallmark" of DDLPS, mostly sustains a wild-type p53 genotype, substantiating the MDM2:p53 axis as a potential therapeutic target for DDLPS. Here, we report on the preclinical effects of SAR405838, a novel and highly selective MDM2 small-molecule inhibitor, in both in vitro and in vivo DDLPS models.
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