Which medications in the drug class Tyrosine Kinase Inhibitors are used in the treatment of Breast Cancer?

Updated: Dec 27, 2019
  • Author: Pavani Chalasani, MD, MPH; Chief Editor: John V Kiluk, MD, FACS  more...
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Answer

Tyrosine Kinase Inhibitors

Tyrosine kinase inhibitors play an important role in the modulation of growth factor signaling. They are commonly combined with other forms of chemotherapy or radiation therapy.

Lapatinib (Tykerb)

Lapatinib is a 4-anilinoquinazoline kinase that inhibits the intracellular tyrosine kinase domains of epidermal growth factor receptor (EGFR [ErbB1]) and HER2 (ErbB2). This agent is indicated in combination with capecitabine for advanced or metastatic breast cancer in patients with tumors that overexpress HER2 and for which previous therapy (ie, anthracycline, taxane, and trastuzumab) was not effective.

This agent is also used in combination with letrozole for the treatment of postmenopausal women with hormone receptor–positive metastatic breast cancer tumors that overexpress the HER2 receptor, for whom hormonal therapy is indicated. [145]

Neratinib (Nerlynx)

Tyrosine kinase inhibitor indicated for extended adjuvant therapy following trastuzumab-based therapy with early stage HER2 overexpressed/amplified breast cancer. It irreversibly binds to EGFR, HER2, and HER4. In vitro, inhibition reduces EGFR and HER2 autophosphorylation, subsequently inhibits signal transduction pathways and demonstrates antitumor activity in overexpressed EGFR and/or HER2 carcinoma cells; neratinib human metabolites (M3, M6, M7, and M11) inhibits EGFR, HER2 and HER4 activity.


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