A letter to members of the UCSD Moores Cancer Center

The phase III HER2CLIMB-05 trial of first-line combination therapy with the tyrosine kinase inhibitor Tukysa in patients with human epidermal growth factor receptor 2-positive metastatic breast cancer has met its primary endpoint. 

Positive high-level results showed Enhertu (fam-trastuzumab deruxtecan-nxki) demonstrated a highly statistically significant and clinically meaningful improvement in invasive disease-free survival versus trastuzumab emtansine in patients with HER2-positive early breast cancer with residual invasive disease in the breast or axillary lymph nodes after neoadjuvant treatment and a high-risk of disease recurrence, according to a planned interim analysis of the DESTINY-Breast05 phase III trial. 

Positive high-level results from the Tropion-Breast02 phase III trial showed Datroway (datopotamab deruxtecan-dlnk) demonstrated a statistically significant and clinically meaningful improvement for the dual primary endpoints of overall survival and progression-free survival compared to investigator’s choice of chemotherapy as first-line treatment for patients with locally recurrent inoperable or metastatic triple-negative breast cancer for whom immunotherapy was not an option.