Margetuximab Plus Chemotherapy vs Trastuzumab Plus Chemotherapy in the Treatment of HER2+ Metastatic Breast Cancer
The purpose of this study is to determine whether patients treated with margetuximab plus chemotherapy have longer progression free survival and overall survival than patients treated with trastuzumab plus chemotherapy.
A Phase 3, Randomized Study of Margetuximab Plus Chemotherapy vs Trastuzumab Plus Chemotherapy in the Treatment of Patients With HER2+ Metastatic Breast Cancer Who Have Received Prior Anti-HER2 Therapies and Require Systemic Treatment
An evaluation of efficacy, as measured by progression-free survival (PFS) assessed by independent review and overall survival (OS), of margetuximab plus chemotherapy compared with trastuzumab plus chemotherapy in patients with advanced HER2+ breast cancer who have received at least 2 prior lines of anti-HER2 directed therapy in the metastatic setting, or in case of having received (neo)adjuvant pertuzumab, at least 1 prior line of anti-HER2 directed therapy in the metastatic setting, and who have received at least one, and no more than three, lines of therapy overall in the metastatic setting. A non-randomized sub-study cohort of approximately 78 patients will be enrolled to evaluate the safety of a reduced margetuximab infusion rate in patients receiving margetuximab either as monotherapy or in combination with chemotherapy.
HER-2 Positive Breast Cancer Metastatic Neoplasm Breast Neoplasms Neoplasm Metastasis Gemcitabine Capecitabine Vinorelbine Trastuzumab
You can join if…
Open to people ages 18 years and up
- Histologically-proven metastatic or locally-advanced relapsed/refractory HER2+ breast cancer based on the most recently available tumor biopsy collected from the patient.Tumors may be estrogen receptor (ER)/progesterone receptor (PgR) positive or negative.
- Have received at least 2 prior lines of anti-HER2 directed therapy in the metastatic setting, or in case of having received (neo)adjuvant pertuzumab, at least 1 prior line of anti-HER2 directed therapy in the metastatic setting. In either case, patients must have received prior treatment with pertuzumab, in the (neo)adjuvant or metastatic setting. Prior radiotherapy, hormonal therapies, and other anti-HER2 therapies are allowed.
- Prior treatment with at least one, and no more than three, lines of therapy overall in the metastatic setting. Patients must have progressed on or following, the most recent line of therapy.
- Resolution of all chemotherapy or radiation-related toxicities to ≤ Grade 1
- Life expectancy ≥ 12 weeks
- Acceptable laboratory parameters
- Women of childbearing potential must have negative pregnancy test performed within 14 days of randomization and on the first day of treatment. All subjects must agree to use an effective form of contraception for the duration of study treatment and for 7 months after the last dose of study drug.
Infusion sub-study prior therapy requirements: Same as above, except:
- Must have received 4 or more prior lines or therapy in the metastatic setting
- Must have received prior trastuzumab, pertuzumab, and T-DM1
You CAN'T join if...
- Known, untreated brain metastasis. Patients with signs or symptoms of brain metastasis must have a CT or MRI performed within 4 weeks prior to randomization to specifically exclude the presence of radiographically-detected brain metastases
- History of uncontrolled seizures within 6 months of randomization
- History of prior allogeneic bone marrow, stem-cell, or solid organ transplantation
- History of clinically significant cardiovascular disease
- Clinically-significant pulmonary compromise, including a requirement for supplemental oxygen use to maintain adequate oxygenation
- Any condition that would be a contraindication to receiving trastuzumab as described in the approved local label or a condition that would prevent treatment with the physician's choice of chemotherapy
- University of California, San Francisco Helen Diller Family Comprehensive Cancer Center accepting new patients
San Francisco, California, 94115, United States
- Stanford University Medical Center accepting new patients
Stanford, California, 94305, United States
- Kaiser Permenente Medical Center accepting new patients
Vallejo, California, 94589, United States
- UC Davis Comprehensive Cancer Center accepting new patients
Sacramento, California, 95817, United States
- Central Coast Medical Oncology withdrawn
Santa Maria, California, 93454, United States
- East Valley Hematology And Oncology accepting new patients
Burbank, California, 91505, United States
- Comprehensive Hematology Oncology Center withdrawn
Los Angeles, California, 90033, United States
- Long Beach Memorial Medical Center withdrawn
Long Beach, California, 90806, United States
- Pacific Cancer Medical Center, Inc. accepting new patients
Anaheim, California, 92801, United States
Please contact me about this study
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If you do not hear from the study team, please call 888-689-8273 and tell them you’re interested in study number NCT02492711.