Japanese Journal of Clinical Oncology 34:104-106 (2004)
© 2004 Foundation for Promotion of Cancer Research
Application of a Continual Reassessment Method to a Phase I Clinical Trial of Capecitabine in Combination with Cyclophosphamide and Epirubicin (CEX) for Inoperable or Recurrent Breast Cancer
1 Department of Epidemiological and Clinical Research Information Management, Kyoto University, Kyoto, 2 Department of Surgery, Tokyo Metropolitan Komagome Hospital, Tokyo, 3 Department of Hematology and Oncology, Jikei University School of Medicine, Tokyo, 4 Department of Clinical Chemotherapy, Cancer Institute Hospital, Tokyo, 5 Department of Surgery, Jichi Medical School, Kawachi-gun, Tochigi, 6 Department of Breast Surgery, National Kyushu Cancer Center, Fukuoka and 7 Department of Breast Surgery, Aichi Cancer Center Hospital, Aichi-gun, Aichi, Japan
A phase I clinical trial was started in order to determine the recommended doses of capecitabine and epirubicin, when administered in combination with a fixed dose of cyclophosphamide (600 mg/m2 day 1 q3 weeks) in patients with inoperable or recurrent breast cancer. This study consists of five dose levels with combinations of three levels of epirubicin (75, 90 and 100 mg/m2 day 1 q3 weeks) and three levels of capecitabine (1255, 1657 and 1800 mg/m2/day consecutive administration for 2 weeks followed by 1 week of rest). Dose escalation and de-escalation decisions are based on a continual reassessment method (CRM). We conducted a survey of the clinical oncologists participating in this trial to determine the dose escalation/de-escalation rule, including a prior distribution for model parameters used in the CRM.
+ For reprints and all correspondence: Satoshi Morita, Department of Epidemiological and Clinical Research Information Management, Kyoto University Graduate School of Medicine, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan. E-mail: smorita{at}pbh.med.kyoto-u.ac.jp