Leptomeningeal Metastases in HER2+ Breast Cancer

Data from the phase 3 INAVO120 trial support the approval of inavolisib-based treatment for patients with PIK3CA+, ER+/HER2– disease in the EU.

Leading experts in the breast cancer field highlight the use of CDK4/6 inhibitors, antibody-drug conjugates, and other treatment modalities.

The regulatory decision is based on data from the phase 3 DESTINY-Breast09 results presented at the 2025 ASCO Annual Meeting.

Findings highlight a need to incorporate diverse populations when developing guideline-concordant breast cancer care to achieve efficacy for all patients.