ESMO 2025: Further findings on Enhertu in early breast cancer

18 October 2025

More positive data has been presented at the ESMO Congress on Enhertu (trastuzumab deruxtecan), a specifically engineered HER2 directed DXd antibody drug conjugate (ADC) discovered by Daiichi Sankyo (TSE: 4568) and being jointly developed and commercialized by the Japanese company and AstraZeneca (LSE: AZN).

The results from the DESTINY-Breast11 Phase III trial show that Enhertu (trastuzumab deruxtecan) followed by paclitaxel, trastuzumab and pertuzumab (THP) in the neoadjuvant setting demonstrated a statistically significant and clinically meaningful improvement in the pathologic complete response (pCR) rate when compared with dose-dense doxorubicin and cyclophosphamide followed by THP (ddAC-THP) in high-risk, locally advanced HER2 positive early-stage breast cancer.

 The data were presented alongside the Enhertu results from the DESTINY-Breast05 study.

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