1. Phase II study of gefitinib in combination with docetaxel as first-line therapy in metastatic breast cancer.
- Author
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Ciardiello, F., Troiani, T., Caputo, F., De Laurentiis, M., Tortora, G., Palmieri, G., De Vita, F., Diadema, M. R., Orditura, M., Colantuoni, G., Gridelli, C., Catalano, G., De Placido, S., and Bianco, A. R.
- Subjects
CANCER treatment ,EPIDERMAL growth factor ,TYROSINE ,CYTOKINES ,BREAST cancer ,SELECTIVE estrogen receptor modulators - Abstract
We have evaluated the activity and safety of gefitinib, a small-molecule epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, in combination with docetaxel as first-line treatment of women with metastatic breast cancer (MBC). In total, 41 patients with MBC were enrolled in a first-line combination therapy study with oral gefitinib (250 mg day(-1)) and intravenous docetaxel (75 mg m(-2), the first 14 patients; or 100 mg m(-2), the following 27 patients, on day 1 of a 3-week cycle). Out of 41 patients, 38 received at least one cycle of therapy. There were no differences in activity or tolerability between the two docetaxel doses. G3/4 toxicities were neutropenia (49%), diarrhoea (10%), acne-like rash (5%), and anaemia (2%). Complete plus partial responses (CR+PR) were observed in 22 out of 41 patients with a 54% response rate (95% confidence interval (CI) 45-75%). The 22 patients that achieved a response following six cycles of docetaxel plus gefitinib continued gefitinib monotherapy (median duration, 24 weeks; range, 2-108+ weeks). Two patients with PR following combination therapy achieved a CR during gefitinib monotherapy. Complete plus partial responses correlated with oestrogen receptor (ER) status, since they occurred in 19 out of 27 (70%) patients with ER-positive tumours as compared to three out of 14 (21%) patients with ER-negative tumours (P=0.01). [ABSTRACT FROM AUTHOR]
- Published
- 2006
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