Monte Rosa Therapeutics Announces Compelling Clinical Activity of MRT-2359 in Combination with Enzalutamide in Heavily Pretreated Metastatic Castration-Resistant Prostate Cancer Patients with Androgen Receptor Mutations

In mCRPC patients with androgen receptor (AR) mutations, treatment with MRT-2359 in combination with enzalutamide led to a 100% PSA response rate (4 of 4 patients) and a 100% disease control rate, including 2 patients with RECIST responses and 2 with stable disease Combination of MRT-2359 and enzalutamide was generally well-tolerated with primarily Grade 1-2 adverse events Company plans to initiate a new, signal-confirming Phase 2 study of MRT-2359 targeting AR mutant and AR signaling-dependent patients i ...