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Eligible patients must receive vinorelbine plus capecitabine, with or without trastuzumab, until disease progression or unbearable toxicity. Cycles will be administered every 3 weeks. HER2 status must be locally assessed by immunohistochemistry (IHC). All 3+ patients are eligible. In 2+ patients, HER2 status must be confirmed by fluorescence in situ hybridization (FISH).
Principal outcome is clinical benefit (complete + partial responses + stable disease). Sample size in each arm has been estimated with the Fleming method. Previous data show a clinical benefit rate of vinorelbine plus capecitabine around 50%. The researchers assume trastuzumab can increase it by 20%. With an alpha error of 0.05 and 80% power, 37 patients per arm are needed.
This is a randomised phase II trial. With a minimum expected benefit rate of 50%, at least 36 patients are needed to choose, with a 90% of probability to be right, the best treatment arm, providing it increases benefit rate at least by 15%.
Assuming a drop-out rate of 10%, the total number of patients needed is 82, 41 per treatment arm.
Patients will be stratified as per investigational site, and presence of visceral metastatic lesion (liver, lung, pleura, heart, peritoneum, suprarenal glands). All patients must receive 2 cycles. If no disease progression is detected, treatment must continue until progression or unbearable toxicity.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
trastuzumab, vinorelbine, capecitabine
Spanish Breast Cancer Research Group (GEICAM)
San Sebastián de los Reyes
Spanish Breast Cancer Research Group
Published on BioPortfolio: 2014-07-23T21:51:02-0400
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A randomized phase II trial of trastuzumab plus capecitabine versus lapatinib plus capecitabine in patients with HER2-positive metastatic breast cancer previously treated with trastuzumab and taxanes: WJOG6110B/ELTOP.
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A deoxycytidine derivative and fluorouracil PRODRUG that is used as an ANTINEOPLASTIC ANTIMETABOLITE in the treatment of COLON CANCER; BREAST CANCER and GASTRIC CANCER.
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Abnormal accumulation of lymph in the arm, shoulder and breast area associated with surgical or radiation breast cancer treatments (e.g., MASTECTOMY).
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In a clinical trial or interventional study, participants receive specific interventions according to the research plan or protocol created by the investigators. These interventions may be medical products, such as drugs or devices; procedures; or change...