Journal
EXPERT OPINION ON PHARMACOTHERAPY
Volume 13, Issue 3, Pages 395-406Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1517/14656566.2012.651127
Keywords
albumin-bound paclitaxel; metastatic breast cancer; nab-paclitaxel; nanotechnology
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Introduction: Docetaxel and paclitaxel are among the most active agents for the treatment of breast cancer. These first-generation taxanes are extremely hydrophobic; therefore, solvents are needed for its parenteral administration. Albumin nanoparticle technology allows for the transportation of such hydrophobic drugs without the need of potentially toxic solvents. Nab-paclitaxel can be administered without premedication, in a shorter infusion time and without the need for a special infusion set. Moreover, this technology allows the selective delivery of larger amounts of anticancer drug to tumors, by exploiting endogenous albumin pathways. Areas covered: An overview of the albumin nanoparticle technology, from a clinical perspective, is reported in this paper. The preclinical and clinical development of nab-paclitaxel is reviewed, in the context of available therapies for advanced breast cancer, with a focus on safety data. Preclinical and clinical data on the prognostic and predictive role of SPARC (secreted protein, acidic and rich in cysteine) are also reported. Expert opinion: Nab-paclitaxel is approved at present for the treatment of metastatic breast cancer, after the failure of first-line standard therapy, when anthracyclines are not indicated. Efficacy and safety data, along with a more convenient administration, confirm the potential for nab-paclitaxel to become a reference taxane in breast cancer treatment.
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