In the adjuvant setting, Herceptin has also been investigated as a weekly regimen (an initial loading dose of 4 mg/ kg followed by 2 mg/ kg every week for one year) concomitantly with paclitaxel (administered weekly (80 mg/ m2) or every 3 weeks (175 mg/ m2) for a total of 12 weeks) following 4 cycles of AC (doxorubicin 60 mg/ m2 IV push concurrently with cyclophosphamide 600 mg/ m2 over 20– 30 minutes).