Adjuvant Docetaxel or Vinorelbine with or without Trastuzumab for Breast Cancer

University of Helsinki, Helsinki, Uusimaa, Finland
New England Journal of Medicine (Impact Factor: 55.87). 02/2006; 354(8):809-20. DOI: 10.1056/NEJMoa053028
Source: PubMed


We compared docetaxel with vinorelbine for the adjuvant treatment of early breast cancer. Women with tumors that overexpressed HER2/neu were also assigned to receive concomitant treatment with trastuzumab or no such treatment.
We randomly assigned 1010 women with axillary-node-positive or high-risk node-negative cancer to receive three cycles of docetaxel or vinorelbine, followed by (in both groups) three cycles of fluorouracil, epirubicin, and cyclophosphamide. The 232 women whose tumors had an amplified HER2/neu gene were further assigned to receive or not to receive nine weekly trastuzumab infusions. The primary end point was recurrence-free survival.
Recurrence-free survival at three years was better with docetaxel than with vinorelbine (91 percent vs. 86 percent; hazard ratio for recurrence or death, 0.58; 95 percent confidence interval, 0.40 to 0.85; P=0.005), but overall survival did not differ between the groups (P=0.15). Within the subgroup of patients who had HER2/neu-positive cancer, those who received trastuzumab had better three-year recurrence-free survival than those who did not receive the antibody (89 percent vs. 78 percent; hazard ratio for recurrence or death, 0.42; 95 percent confidence interval, 0.21 to 0.83; P=0.01). Docetaxel was associated with more adverse effects than was vinorelbine. Trastuzumab was not associated with decreased left ventricular ejection fraction or cardiac failure.
Adjuvant treatment with docetaxel, as compared with vinorelbine, improves recurrence-free survival in women with early breast cancer. A short course of trastuzumab administered concomitantly with docetaxel or vinorelbine is effective in women with breast cancer who have an amplified HER2/neu gene. (International Standard Randomised Controlled Trial number, ISRCTN76560285.).

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    • "Gene amplification or protein overexpression of the human epidermal growth factor receptor type 2 (HER2) has been reported in w20% of invasive breast cancer (BC) and is usually associated with worse prognosis (Slamon et al., 1987, 1989). The monoclonal antibody trastuzumab has dramatically increased survival in patients with HER2-overexpressing metastatic disease (Hudis, 2007; Slamon et al., 2001) and has often proved curative when used in combination with chemotherapy in the adjuvant setting (Joensuu et al., 2006; Piccart- Gebhart et al., 2005; Romond et al., 2005; Smith et al., 2007). "
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    ABSTRACT: Introduction: Current methods to determine HER2 (human epidermal growth factor receptor 2) status are affected by reproducibility issues and do not reliably predict benefit from anti-HER2 therapy. Quantitative measurement of HER2 may more accurately identify breast cancer (BC) patients who will respond to anti-HER2 treatments. Methods: Using selected reaction monitoring mass spectrometry (SRM-MS), we quantified HER2 protein levels in formalin-fixed, paraffin-embedded (FFPE) tissue samples that had been classified as HER2 0, 1+, 2+ or 3+ by immunohistochemistry (IHC). Receiver operator curve (ROC) analysis was conducted to obtain optimal HER2 protein expression thresholds predictive of HER2 status (by standard IHC or in situ hybridization [ISH]) and of survival benefit after anti-HER2 therapy. Results: Absolute HER2 amol/μg levels were significantly correlated with both HER2 IHC and amplification status by ISH (p < 0.0001). A HER2 threshold of 740 amol/μg showed an agreement rate of 94% with IHC and ISH standard HER2 testing (p < 0.0001). Discordant cases (SRM-MS-negative/ISH-positive) showed a characteristic amplification pattern known as double minutes. HER2 levels >2200 amol/μg were significantly associated with longer disease-free survival (DFS) and overall survival (OS) in an adjuvant setting and with longer OS in a metastatic setting. Conclusion: Quantitative HER2 measurement by SRM-MS is superior to IHC and ISH in predicting outcome after treatment with anti-HER2 therapy.
    Molecular oncology 09/2015; DOI:10.1016/j.molonc.2015.09.002 · 5.33 Impact Factor
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    • "Enrichment designs have been widely discussed to establish treatment benefit in a selected (enriched) subpopulation [1] [2] [3] [4] [5] [6] [7] and are closely related to FDA's initiative on personalized medicine [8]. One purpose to select such enriched population is for better treatment response potential, for example the trastuzumab benefit on HER2+ breast cancer patients [9] [10] [11] [12]. "
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    Contemporary Clinical Trials 03/2015; 42. DOI:10.1016/j.cct.2015.02.010 · 1.94 Impact Factor
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    • "The approval was based on evidence of a significant prolongation in disease-free survival in women receiving trastuzumab and chemotherapy compared to those receiving chemotherapy alone. Table 2 shows five pivotal trials involving more than 10,000 women which demonstrated that one year of trastuzumab therapy provided significant clinical benefit [63–66]. These trials demonstrated that inclusion of trastuzumab produces roughly a 50% improvement in disease-free survival and 33% improvement in overall survival, regardless of the chemotherapy regimen or sequence of trastuzumab delivery. "
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    ABSTRACT: Human epidermal growth factor receptor 2 (HER2) is a member of the epidermal growth factor receptor family having tyrosine kinase activity. Dimerization of the receptor results in the autophosphorylation of tyrosine residues within the cytoplasmic domain of the receptors and initiates a variety of signaling pathways leading to cell proliferation and tumorigenesis. Amplification or overexpression of HER2 occurs in approximately 15-30% of breast cancers and 10-30% of gastric/gastroesophageal cancers and serves as a prognostic and predictive biomarker. HER2 overexpression has also been seen in other cancers like ovary, endometrium, bladder, lung, colon, and head and neck. The introduction of HER2 directed therapies has dramatically influenced the outcome of patients with HER2 positive breast and gastric/gastroesophageal cancers; however, the results have been proved disappointing in other HER2 overexpressing cancers. This review discusses the role of HER2 in various cancers and therapeutic modalities available targeting HER2.
    09/2014; 2014:852748. DOI:10.1155/2014/852748
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