Treatment of HER2-positive breast cancer: current status and future perspectives.

Arteaga CL, Sliwkowski MX, Osborne CK, Perez EA, Puglisi F, Gianni L
Nat Rev Clin Oncol. 2011 9 (1): 16-32

PMID: 22124364 · DOI:10.1038/nrclinonc.2011.177

The advent of HER2-directed therapies has significantly improved the outlook for patients with HER2-positive early stage breast cancer. However, a significant proportion of these patients still relapse and die of breast cancer. Trials to define, refine and optimize the use of the two approved HER2-targeted agents (trastuzumab and lapatinib) in patients with HER2-positive early stage breast cancer are ongoing. In addition, promising new approaches are being developed including monoclonal antibodies and small-molecule tyrosine kinase inhibitors targeting HER2 or other HER family members, antibodies linked to cytotoxic moieties or modified to improve their immunological function, immunostimulatory peptides, and targeting the PI3K and IGF-1R pathways. Improved understanding of the HER2 signaling pathway, its relationship with other signaling pathways and mechanisms of resistance has also led to the development of rational combination therapies and to a greater insight into treatment response in patients with HER2-positive breast cancer. Based on promising results with new agents in HER2-positive advanced-stage disease, a series of large trials in the adjuvant and neoadjuvant settings are planned or ongoing. This Review focuses on current treatment for patients with HER2-positive breast cancer and aims to update practicing clinicians on likely future developments in the treatment for this disease according to ongoing clinical trials and translational research.

MeSH Terms (19)

Angiogenesis Inhibitors Antibodies, Monoclonal Antibodies, Monoclonal, Humanized Antineoplastic Agents Breast Neoplasms Cancer Vaccines Disease Progression Female Gene Amplification Genes, erbB-2 Heat-Shock Proteins Humans Lapatinib Prognosis Protein-Tyrosine Kinases Protein Kinase Inhibitors Quinazolines Receptor, IGF Type 1 Trastuzumab

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