A Phase III Trial For Patients With Metastatic Breast Cancer

Study Summary

This is a phase III randomized study between the docetaxel/gemcitabine and docetaxel/ capecitabine doublets, with crossover to the alternate agent. The experimental arm will receive gemcitabine 1000 mg/m2 intravenous (IV) over 30 minutes days 1 and 8 and docetaxel 75 mg/m2 IV day 1 over 1 hour repeated every three weeks. The comparator arm will receive docetaxel 75 mgm/m2 IV day 1 over 1 hour and oral capecitabine 1000 mg/m2 twice daily, days 1 through 14 repeated every three weeks. Patients who progress on the experimental arm, will be treated with capecitabine as dosed on the comparator arm. Patients who progress on the comparator arm will be treated with gemcitabine as dosed on the experimental arm.

Primary Outcome

Time to disease progression (TTDP) at initial treatment was defined as the number of months between date of randomization and the date of first documented disease progression or the date of death due to disease under study, whichever came first. TTDP censored at earliest of: 1) date of death not due to disease; or 2) date of last contact for participants alive without disease progression; or 3) start date of other anti-tumor therapy; or 4) first dose date of crossover treatment.

Interventions

• DRUG docetaxel
• DRUG gemcitabine
• DRUG capecitabine