At a glance
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A Randomized, Multicenter, Open-Label, Phase III Trial Comparing Trastuzumab Plus Pertuzumab Plus a Taxane Following Anthracyclines Versus Trastuzumab Emtansine Plus Pertuzumab Following Anthracyclines as Adjuvant Therapy in Patients With Operable HER2-Positive Primary Breast Cancer
In Brief
A Phase 3 clinical trial evaluating Trastuzumab Emtansine, Trastuzumab, and 7 other interventions for Breast Cancer. Completed, enrolled 1,846 participants across 295 sites in 36 countries.
Detailed Summary
This two-arm, randomized, open-label, multicenter study will evaluate the efficacy and safety of trastuzumab emtansine in combination with pertuzumab versus trastuzumab in combination with pertuzumab and a taxane as adjuvant therapy in participants with human epidermal growth (HER) factor 2 (HER2)-positive primary invasive breast cancer. Following surgery and anthracycline-based chemotherapy, participants will receive either trastuzumab emtansine at a dose of 3.6 milligrams per kilogram (mg/kg) and pertuzumab at a dose of 420 milligrams (mg) intravenously (IV) every 3 weeks (q3w) or trastuzumab at a dose of 6 mg/kg and pertuzumab at a dose of 420 mg IV q3w in combination with a taxane.
Study Details
Timeline
Interventions
Trastuzumab emtansine IV infusion (duration 90 minutes) will be administered at 3.6 mg/kg q3w for up to 18 cycles (1 cycle = 21 days).
Trastuzumab IV infusion (duration 90 minutes) will be administered at 8 mg/kg loading dose followed by 6 mg/kg IV q3w for up to 18 cycles (1 cycle = 21 days).
Pertuzumab infusion (duration 60 minutes) will be administered at 840 mg loading dose followed by 420 mg IV q3w for up to 18 cycles (1 cycle = 21 days).
IV infusion of paclitaxel 80 mg/m\^2 once weekly may be administered concurrently with trastuzumab in combination with pertuzumab for 12 weeks.
3 to 4 cycles (1 cycle = 21 days) of standard of care anthracycline-based chemotherapy using epirubicin may be administered in both Arms 1 and 2 as per discretion of the investigator and local prescribing information/institutional guidelines.
3 to 4 cycles (1 cycle = 21 days) of standard of care anthracycline-based chemotherapy using doxorubicin may be administered in both Arms 1 and 2 as per discretion of the investigator and local prescribing information/institutional guidelines.
IV infusion either docetaxel every 3 weeks (q3w) (at 100 milligram per square meter \[mg/m\^2\] for 3 cycles (1 cycle = 21 days); at 75 mg/m2 for 4 cycles; or start at 75 mg/m\^2 in the first cycle and escalate to 100 mg/m\^2 if no dose limiting toxicity occurs, for a total of 3 cycles at minimum) may be administered concurrently with trastuzumab in combination with pertuzumab.
3 to 4 cycles (1 cycle = 21 days) of standard of care anthracycline-based chemotherapy using cyclophosphamide (FEC) may be administered in both Arms 1 and 2 as per discretion of the investigator and local prescribing information/institutional guidelines.
3 to 4 cycles (1 cycle = 21 days) of standard of care anthracycline-based chemotherapy using 5-fluorouracil, may be administered in both Arms 1 and 2 as per discretion of the investigator and local prescribing information/institutional guidelines.