Phase II clinical trial of liposomal-encapsulated doxorubicin citrate and docetaxel, associated with trastuzumab, as neoadjuvant treatment in stages II and IIIA HER2-overexpressing breast cancer patients. GEICAM 2003-03 study
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2011Título de revista
ANNALS OF ONCOLOGY
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Resumen
BACKGROUND:
we previously reported a phase I trial of liposome-encapsulated doxorubicin citrate (LD), docetaxel and trastuzumab as neoadjuvant in stages II and IIIA human epidermal growth factor receptor 2-overexpressing breast cancer patients. This study evaluates the efficacy of this regimen in a phase II trial.
PATIENTS AND METHODS:
patients were treated with LD 50 mg/m(2) and docetaxel 60 mg/m(2) every 21days associated with standard trastuzumab dose and pegfilgrastim support.
RESULTS:
fifty-nine patients were enrolled; median age: 48 years (range 24-71 years); premenopausal patients: 36 (61%); 19 patients (32%) presented stage IIIA disease and 40 patients (67%) stage II; histological grades 2-3 tumors: 50 patients (84%) and estrogen receptor-progesterone receptor negative: 28 patients (47%). In all, 27% achieved a pathological complete response in breast and axilla (grade 5-Miller and Payne classification); 15% of patients achieved grade 4. Clinical and radiological response rates were 86% and 81%, respectively. Forty-two patients (71%) underwent breast-conserving surgery. The main grades 3-4 toxic effects were non-febrile neutropenia (29%) and fatigue (8%). Grade 2 left ventricular ejection fraction decline was observed in nine patients. No congestive heart failure was observed.
CONCLUSIONS:
LD plus docetaxel combination associated with trastuzumab as neoadjuvant is active in breast cancer and entails a favorable cardiotoxicity profile. This regimen is a new treatment option in these patients.
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