Study of Tucatinib and Doxil in Participants With Human Epidermal Growth Factor Receptor 2 Positive (HER2+) Metastatic Breast Cancer
Trial Parameters
Brief Summary
This clinical trial is evaluating tucatinib in combination with Doxil in participants with human epidermal growth factor 2 positive (HER2+) locally advanced or metastatic breast cancer. The main goals of this study are to: * Learn how well the combination of tucatinib and Doxil works * Learn more about the side effects of the combination of tucatinib and Doxil
Eligibility Criteria
Inclusion Criteria: * Written informed consent, according to local guidelines, signed and dated by the patient or by a legal guardian prior to the performance of any study-specific procedures, sampling, or analyses * At least 18 years-of-age at the time of signature of the informed consent form (ICF) * Eastern Cooperative Oncology Group (ECOG) Performance Status score of 0 or 1 * Have a confirmed diagnosis of locally advanced/metastatic HER2+ breast cancer (based on local laboratory testing per American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP) guidelines immunohistochemistry 3+ (IHC3+) or fluorescence in situ hybridization + (FISH+)) * Have had prior treatment with at least 1 line of anti-HER2 therapy for locally advanced/metastatic disease or relapsed within 6 months of completion of adjuvant anti-HER2 therapy. Prior treatment with tucatinib in the metastatic setting is allowed * Measurable disease as measured by Response Evaluation Criteria in Solid