
Panelists discuss recent phase 3 trials of novel endocrine agents in advanced breast cancer, highlighting benefits—especially in patients with ESR1 mutations—from proteolysis-targeting chimeras (PROTACs) and oral selective estrogen receptor degraders (SERDs), including early switching based on molecular monitoring and combination strategies with CDK4/6 inhibitors; they emphasize the favorable safety profiles and the promise of personalized regimens, while also looking ahead to ongoing studies evaluating these agents earlier in treatment to improve cure rates and reduce recurrence in hormone receptor–positive breast cancer.











