Safety Study of Pertuzumab (in Combination With Trastuzumab and Docetaxel) in Indian Participants With Breast Cancer

Participants will receive docetaxel in line with locally approved Prescribing Information. After Cycle 6 (cycle length = 21 days), continuation of docetaxel treatment will be at the discretion of the investigator. Docetaxel will be administered after pertuzumab and trastuzumab.

Participants will receive pertuzumab at an initial dose of 840 milligrams (mg) as a 60-minute intravenous infusion on Cycle 1 Day 1 (cycle length = 21 days), followed by every 3 weeks at a dose of 420 mg as a 30 to 60-minute intravenous infusion until disease progression, unacceptable toxicity, withdrawal of consent or death, whichever occurs first.

Participants will receive trastuzumab at an initial dose of 8 milligrams per kilogram (mg/kg) as a 90-minute intravenous infusion on Cycle 1 Day 1 (cycle length = 21 days), followed by every 3 weeks at a dose of 6 mg/kg as a 30 to 90-minute intravenous infusion until disease progression, unacceptable toxicity, withdrawal of consent or death, whichever occurs first.