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A 44-year-old female asked:

Stage 3 breast cancer her2 positive how many herceptin (trastuzumab) cycle she must undergo?

2 doctor answers9 doctors weighed in
Dr. Romeo Mandanas
Hematology and Oncology 39 years experience
Up to 1 year's worth: Herceptin (trastuzumab) can be given together with initial chemotherapy for the first 4-6 months then subsequently by itself for a total of 1 year. If chemotherapy was given first without Herceptin (trastuzumab) then Herceptin (trastuzumab) can be given for a full year by itself. The usual cycle runs every 3 weeks (17-18 cycles in one full year).
Dr. Joseph Woods
Pathology 29 years experience
The optimal treatment duration is currently unknown. Trials are being done to see if short term therapy is just as beneficial with less side effects, like cardiac dysfunction. For now, one year of treatment is accepted as the time period of therapy.
Aug 17, 2012
Dr. Christian Schultheis
Hematology and Oncology 25 years experience
1 year: The standard of care for stage 1, 2, 3 breast cancer is a year of herceptin (trastuzumab). It is probably the most important drug in her 2 positive breast cancer!
Last updated Mar 1, 2019

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