Therapeutic Response Statement (Sensitivity)

This therapeutic response statement supports the relationship that HER2-positive status confers therapeutic sensitivity to Capecitabine, Trastuzumab, Tucatinib in patients with Invasive Breast Carcinoma.

Health Canada approved tucatinib in combination with trastuzumab and capecitabine for treatment of patients with locally advanced unresectable or metastatic HER2-positive breast cancer, including patients with brain metastases, who have received prior treatment with trastuzumab, pertuzumab, and trastuzumab emtansine, separately or in combination.

This statement is based on a regulatory approval from the Health Canada:

TUKYSA (tucatinib) is indicated in combination with trastuzumab and capecitabine for treatment of patients with locally advanced unresectable or metastatic HER2-positive breast cancer, including patients with brain metastases, who have received prior treatment with trastuzumab, pertuzumab, and trastuzumab emtansine, separately or in combination.

Citation

Seagen Inc. Tukysa (tucatinib) [product monograph]. Health Canada website. https://pdf.hres.ca/dpd_pm/00062119.PDF. Revised July 2021. Accessed June 2025.