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Journal Article
Review
Pertuzumab for the treatment of human epidermal growth factor receptor type 2-positive metastatic breast cancer.
American Journal of Health-system Pharmacy : AJHP 2013 September 16
PURPOSE: The pharmacology, pharmacokinetics, clinical efficacy, safety, and administration of pertuzumab in patients with metastatic human epidermal growth factor receptor type 2 (HER2)-positive breast cancer are reviewed.
SUMMARY: Disease progression in HER2-positive breast cancer is often due to resistance to or a lack of efficacy of trastuzumab-based anti-HER2 therapy. Pertuzumab is the first humanized monoclonal antibody in a new class of drugs, the HER dimerization inhibitors, approved by the Food and Drug Administration for the first-line treatment of patients with metastatic HER2-positive breast cancer who have not received prior anti-HER2 therapy or chemotherapy for metastatic disease. Since pertuzumab binds to a different epitope than trastuzumab, combination therapy with pertuzumab and trastuzumab results in a more complete blockade of HER2 signaling than trastuzumab monotherapy. The efficacy of adding pertuzumab to trastuzumab-docetaxel dual therapy was demonstrated in a pivotal randomized multicenter Phase III trial, which showed a significant benefit in terms of progression-free survival, with improved overall survival, in favor of the triple therapy as an initial regimen in treatment-naive patients with metastatic HER2-positive breast cancer. The combination of pertuzumab and trastuzumab has been found to have a tolerable toxicity profile. As clinical trials of pertuzumab for adjuvant, neoadjuvant, and metastatic-disease treatment continue, its role in the treatment of HER2-positive breast cancer will continue to evolve.
CONCLUSION: Pertuzumab, a novel HER2 dimerization inhibitor, has been shown to be effective in the treatment of metastatic HER2-positive breast cancer when used in combination with trastuzumab and docetaxel and is recommended for first-line therapy.
SUMMARY: Disease progression in HER2-positive breast cancer is often due to resistance to or a lack of efficacy of trastuzumab-based anti-HER2 therapy. Pertuzumab is the first humanized monoclonal antibody in a new class of drugs, the HER dimerization inhibitors, approved by the Food and Drug Administration for the first-line treatment of patients with metastatic HER2-positive breast cancer who have not received prior anti-HER2 therapy or chemotherapy for metastatic disease. Since pertuzumab binds to a different epitope than trastuzumab, combination therapy with pertuzumab and trastuzumab results in a more complete blockade of HER2 signaling than trastuzumab monotherapy. The efficacy of adding pertuzumab to trastuzumab-docetaxel dual therapy was demonstrated in a pivotal randomized multicenter Phase III trial, which showed a significant benefit in terms of progression-free survival, with improved overall survival, in favor of the triple therapy as an initial regimen in treatment-naive patients with metastatic HER2-positive breast cancer. The combination of pertuzumab and trastuzumab has been found to have a tolerable toxicity profile. As clinical trials of pertuzumab for adjuvant, neoadjuvant, and metastatic-disease treatment continue, its role in the treatment of HER2-positive breast cancer will continue to evolve.
CONCLUSION: Pertuzumab, a novel HER2 dimerization inhibitor, has been shown to be effective in the treatment of metastatic HER2-positive breast cancer when used in combination with trastuzumab and docetaxel and is recommended for first-line therapy.
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