Phase I/II Study of U3-1402 in Subjects With Human Epidermal Growth Factor Receptor 3 (HER3) Positive Metastatic Breast Cancer
Metastatic Breast Cancer
About this trial
This is an interventional treatment trial for Metastatic Breast Cancer focused on measuring Oncology, HER3, Antibody drug conjugate, Developmental Phase I/II
Eligibility Criteria
Inclusion Criteria:
- Is 18 Years and older in the United States or 20 Years and older in Japan
- Has a pathologically documented advanced/unresectable or metastatic breast cancer
- Documented HER3-positive disease measured by immunohistochemistry (IHC)
- Has disease that is refractory to or intolerable with standard treatment, or for which standard treatment no longer is available
- Has an Eastern Cooperative Oncology Group Performance Status 0-1
- Has Left Ventricular Ejection Fraction ≥ 50%
Has measurable disease based on Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1
Additional Inclusion Criteria for Dose Finding Part and Dose Expansion Part:
Has received 2-6 prior chemotherapy regimens for breast cancer, at least 2 of which were administered for treatment of advanced/unresectable or metastatic disease. At least 1 prior chemotherapeutic regimen must have included a taxane, administered in the neoadjuvant, adjuvant, or advanced setting. (With exception of Dose Expansion Part TNBC cohort. See additional inclusion criteria for Dose Expansion Part TNBC cohort.)
Additional Inclusion Criteria for Dose Expansion Part Only:
- Is able to submit a fresh tumor biopsy sample prior to starting study treatment if not already submitted for HER3 expression
Has documented hormone (estrogen and/or progesterone) receptor (HR)-positive and HER2 negative expression according to American Society of Clinical Oncology - College of American Pathologists (ASCO-CAP) guidelines. (With exception of Dose Expansion Part TNBC cohort. See additional inclusion criteria for Dose Expansion Part TNBC cohort.)
Additional Inclusion Criteria for Dose Expansion Part TNBC cohort Only:
- Has documented hormone (estrogen and progesterone) receptor (HR)-negative and HER2 negative expression according to American Society of Clinical Oncology - College of American Pathologists (ASCO-CAP) guidelines
- Has progressed after receiving 1 to 2 prior chemotherapy regimens for advanced/unresectable or metastatic breast cancer.
Exclusion Criteria:
- Prior treatment with a HER3 antibody
- Prior treatment with an antibody-drug conjugate (ADC) which consists of an exatecan derivative that is a topoisomerase I inhibitor (eg, DS-8201)
- Has a medical history of symptomatic congestive heart failure (New York Heart Association classes II-IV) or serious cardiac arrhythmia requiring treatment
- Has a medical history of myocardial infarction or unstable angina
- Has a corrected QT prolongation to > 450 millisecond (ms) in males and > 470 ms in females
- Has a medical history of clinically significant lung diseases (eg, interstitial pneumonia, pneumonitis, pulmonary fibrosis, and radiation pneumonitis) or who are suspected to have these diseases by imaging at screening period
Has clinically significant corneal disease
Additional Exclusion Criteria for Dose Expansion Part:
- Prior treatment with an govitecan derivative (eg, IMMU-132).
Sites / Locations
- Southeastern Regional Medical Center
- Northwestern University
- Massachusetts General Hospital
- Dana Farber Cancer Institute
- Albert Einstein College of Medicine
- Memorial Sloan Kettering Cancer Center
- Texas Oncology, P.A.
- UT Southwestern Medical Center
- University of Texas MD Anderson Cancer Center
- Mays Cancer Center
- National Hospital Organization Hokkaido Cancer Center
- National Cancer Center Hospital East
- Fukushima Medical University Hospital
- Local Independent Administrative Corporation Hiroshima City Hospital Organization Hiroshima City Hiroshima Citizens Hospital
- Hakuaikai Social Medical Corporation Sagara Hospital
- Kanagawa Cancer Center
- Kumamoto University Hospital
- Aichi Cancer Center Hospital
- Nagoya City University Hospital
- National Hospital Organization Osaka National Hospital
- Osaka International Cancer Institute
- Kindai University Hospital
- Saitama Medical University International Medical Center
- Saitama Cancer Center
- National Cancer Center Hospital
- The Cancer Institute Hospital of Japanese Foundation for Cancer Research
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Experimental
Dose Escalation Part
Dose Finding Part
Dose Expansion Part
Participants receive U3-1402 from 1.6 mg/kg to 9.6 mg/kg, administered via intravenous (IV) solution at 3-week intervals.
Participants receive 1 of 5 different U3-1402 dosing regimens, administered via IV solution at 2 or 3-week intervals at doses at or lower than those studied in the Dose Escalation Part.
Participants with HER3 high, HER2 negative, HR positive status receive 4.8 mg/kg or 6.4 mg/kg of U3-1402 administered via intravenous (IV) solution at 3-week intervals. Participants with HER3 low, HER2 negative, HR positive status receive 6.4 mg/kg of U3-1402 administered via intravenous (IV) solution at 3-week intervals. Participants with HER3 high, HER2 negative, HR negative status receive 6.4 mg/kg of U3-1402 administration via intravenous (IV) solution at 3-week intervals.