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Japanese Journal of Clinical Oncology 9:239-246 (1979)
© 1979 Foundation for Promotion of Cancer Research


research-article

Antitumor Activity of Ifosfamide against Nude Mice Xenograft and Results of Clinical Investigation

INOUE KATSUHIRO, M.D., HIROSHI UEOKA, M.D., SHUICHI FUJIMOTO, M.S., JIRO INAGAKI, M.D., NOBORU HORIKOSHI, M.D., YASUO TAKANO, M.D., EIICHI NAGURA, M.D., SHIRO MUROSAKI, M.D., TADASHI KOBAYASHI, M.D. and MAKOTO OGAWA, M.D.

Department of Clinical Oncology, Cancer Institute Hospital and Division of Clinical Chemotherapy, Cancer Chemotherapy Center Tokyo

Reprint requests: Katsuhiro Inoue, M.D., Department of Clinical Oncology, Cancer Institute Hospital and Division of Clinical Chemotherapy, Cancer Chemotherapy Center, 1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo 170, Japan.

Received July 18, 1979; An evaluation of the effectiveness of ifosfamide against a xenograft of a mammary breast carcinoma and clinical evaluation in patients with advanced malignant tumors refractory to previous chemo- and radiotherapy was performed. Ifosfamide showed high antitumor activity against the xenograft of mammary breast carcinoma MX-1, but the antitumor activity of cyclophosphamide was higher.

Combination chemotherapy with ifosfamide was investigated in 26 patients. Except in one case, ifosfamide was given in combination with other anticancer agents as follows: regimen 1 (vincristine at 1 mg/body weekly, ifosfamide at 1.2g/m2/d and prednisolone at 40 mg/m2/d on days 1 to 5); regimen II (vincristine at 1 to 1.5 mg/body weekly, ifosfamide at 2.0 g/m2/d and prednisolone at 40 mg/m2/d on days 1 to 5); and regimen III (Bischlorethyl nitrosourea, BCNU at 100mg/m2 at six-week intervals, ifosfamide at 2.0 g/m2/d and prednisolone at 60 mg/m2/d on days 1 to 5). For four patients, ifosfamide at 1.2 g/m2/d on days 1 to 5 was given with vinblastine, actinomycin-D, Cis-dichloro-diammine platinum (cis-DDP) or bleomycin. In patients with advanced malignant tumors refractory to previous chemo-and radiotherapy, the response to all regimens was minimal. In regimen II and III, there was increased hematological, genitourinary and central nervous system toxicity due to dose escalation of ifosfamide, as compared with regimen I. Therefore, dose escalation of more than 1.2g/m2/d is not recommended.


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