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  • Title: Intense dose-dense sequential chemotherapy with epirubicin, paclitaxel, and cyclophosphamide compared with conventionally scheduled chemotherapy in high-risk primary breast cancer: mature results of an AGO phase III study.
    Author: Moebus V, Jackisch C, Lueck HJ, du Bois A, Thomssen C, Kurbacher C, Kuhn W, Nitz U, Schneeweiss A, Huober J, Harbeck N, von Minckwitz G, Runnebaum IB, Hinke A, Kreienberg R, Konecny GE, Untch M.
    Journal: J Clin Oncol; 2010 Jun 10; 28(17):2874-80. PubMed ID: 20458045.
    Abstract:
    PURPOSE: Patients with primary breast cancer who have extensive axillary lymph node involvement have a poor prognosis after conventional adjuvant therapy. We compared intense dose-dense (IDD) adjuvant chemotherapy with conventionally scheduled adjuvant chemotherapy in patients with high-risk primary breast cancer. PATIENTS AND METHODS: In this randomized, phase III trial, a total of 1,284 eligible patients with four or more involved axillary lymph nodes were randomly assigned to receive IDD sequential epirubicin, paclitaxel, and cyclophosphamide (IDD-ETC) every 2 weeks or conventionally scheduled epirubicin/cyclophosphamide followed by paclitaxel every three weeks. The primary end point was event-free survival (EFS). RESULTS: At a median follow-up of 62 months, 5-year event-free survival rates were 62% in the conventional arm and 70% in the IDD-ETC arm, representing a 28% reduction of the relative risk of relapse (P < .001). This benefit was independent of menopausal, hormone receptor, or human epidermal growth factor receptor 2 status. The 5-year overall survival rates were 77% versus 82%, representing a 24% reduction of the relative risk of death (P = .0285). IDD therapy was associated with significantly more nonhematologic and hematologic toxicities, but no treatment-related death occurred. Four occurrences of acute myeloid leukemia or myelodysplastic syndrome (MDS) were observed in the IDD-ETC arm. No severe congestive heart failure was reported. CONCLUSION: IDD-ETC was less well tolerated compared with conventional chemotherapy but significantly improved event-free and overall survivals in patients with high-risk primary breast cancer who had four or more positive axillary lymph nodes.
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