ESR1-Mutated Metastatic Breast Cancer Market Expected to Grow Rapidly at 9.6% CAGR During the Forecast Period (2026–2036) Due to the Emergence of Novel Oral SERDs and Targeted Agents | DelveInsight

The ESR1-mutated metastatic breast cancer market is projected to grow at 9.6% CAGR through 2036, driven by rising prevalence of endocrine-resistant HR-positive/HER2-negative breast cancer and adoption of precision oncology. Novel oral SERDs and targeted agents from major pharmaceutical companies are reshaping the treatment landscape. The market was valued at USD 1.5 billion in 2025, with the US representing the largest market share. Recent FDA approvals include VEPPANU (vepdegestrant), the first PROTAC therapy, while several emerging therapies are in clinical development.