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This trial studies the best dose and side effects of utomilumab (4-1BB agonist monoclonal antibody PF-05082566) with trastuzumab emtansine or trastuzumab in treating patients with HER2-positive breast cancer that has spread to other places in the body. Monoclonal antibodies, such as utomilumab, trastuzumab emtansine, and trastuzumab may interfere with the ability of tumor cells to grow and spread.
Full description
PRIMARY OBJECTIVE:
Estimate the maximum tolerated dose (MTD) and determine the recommended dose (RP2D) of utomilumab in combination with ado-rastuzumab emtansine (T-DM1) or trastuzumab in subjects with HER2-positive advanced breast cancer.
SECONDARY OBJECTIVES:
OUTLINE: Patients are randomized to 1 of 2 cohorts.
COHORT 1: Dose 1: Utomilumab 20 mg IV + ado-trastuzumab emtansine (T-DM1) 3.6 mg/kg IV every 3 weeks. Dose 2: Dose Level 2 - Utomilumab 100 mg IV + ado-trastuzumab emtansine 3.6 mg/kg IV every 3 weeks
COHORT 2: Dose 1: Utomilumab 20 mg IV + trastuzumab 6 mg/kg IV every 3 weeks. Dose Level 2 - Utomilumab 100 mg IV + trastuzumab 6 mg/kg IV every 3 weeks.
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18 participants in 4 patient groups
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Data sourced from clinicaltrials.gov
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