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Gan To Kagaku Ryoho. 2011 Sep;38(9):1467-70.

[Chemotherapy of a 2-week S-1 administration followed by 1-week rest for advanced and metastatic breast cancer].

[Article in Japanese]

Author information

1
Dept. of Surgery, Division of Breast and Endocrine Surgery, Aichi Medical University.

Abstract

When treating advanced and metastatic breast cancer patients with chemotherapy, it is mandatory to maintain the patients quality of life while keeping an acceptable level of antitumor activity. For these purposes, oral administration of S-1, fluorinated pyrimidine, is a good choice of treatment. Conventionally, a 4-week administration followed by a 2-week rest has been the treatment of choice with S-1. However, we applied a new regimen for 16 patients with advanced and metastatic breast cancer, in which one course consisted of a 2 week-administration followed by a week of rest, repeated twice. The median age of the patients who received this treatment was 59 years old(range 46. 8-80. 6). The response rate was 31. 2%, and the median values of time to progression and overall survival were 5. 1 and 17. 9 months, respectively. One case of thrombocytopenia as an adverse event was recognized. Our new S-1 regimen is likely to show an acceptable anti-tumor effect with minimal adverse events. The fidings suggest that this new regimen is clinically applicable for advanced and metastatic breast cancer patients.

PMID:
21918343
[Indexed for MEDLINE]
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