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Feasibility of AC/EC followed by weekly paclitaxel in node-positive breast cancer in Japan.

UNLABELLED
The feasibility and efficacy of adriamycin or epirubicin in combination with cyclophosphamide followed by weekly paclitaxel (AC/EC-weekly PAC) as adjuvant chemotherapy for breast cancer was investigated.


PATIENTS AND METHODS
Node-positive breast cancer was treated with AC/ EC-weekly PAC, namely AC at 60/600 mg/m(2) or EC at 90/600 mg/m(2) x4 at three-week intervals, followed by weekly PAC (80 mg/m(2)) x 12, namely four cycles of single weekly administration for three weeks followed by a one-week rest (3 x 4 PAC) or single weekly administration for 12 consecutive weeks (12 PAC).


RESULTS
One hundred and three of 109 consecutive patients enrolled were analyzed, of whom 96 (93.2%) completed the regimen. Grade 3/4 neutropenia occurred in 52.4% receiving AC/EC, and 10.9% of 55 receiving 12 PAC but only 2.1% of 48 receiving 3 x 4 PAC. Neuropathy disorders occurred in more than half receiving PAC, which did not improve after one-week rest in 3 x 4 PAC.


CONCLUSION
AC/EC-weekly PAC is feasible and without serious complications.