Cardiac toxicity of ErbB2-targeted therapies

What do we know?

Edith A. Perez

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

The potential for cardiac toxicity in association with targeted biologic agents was first observed with trastuzumab, a monoclonal antibody that targets the ErbB2/HER2 receptor. In the pivotal trial of trastuzumab in ErbB2-positive metastatic cancer, an increased incidence of serious cardiac events was observed, particularly when trastuzumab was administered in combination with anthracyclines. The ErbB2 receptor is expressed on cardiomyocytes, in addition to tumor tissue, where it exerts a protective effect on cardiac function; thus, interference with ErbB2-signaling may block this protective effect. However, in contrast to anthracycline-induced cardiac toxicity, trastuzumab-related cardiac dysfunction does not appear to increase with cumulative dose or to be associated with ultrastructural changes in the myocardium and is generally reversible. When used in adjuvant regimens for the treatment of ErbB2-positive early-stage breast cancer, trastuzumab has been shown to significantly improve disease-free and overall survival. The incidence of class III/IV congestive heart failure (CHF) ranged from 0.4%-3.8% in the major adjuvant trastuzumab trials. More recently, small-molecule tyrosine kinase inhibitors such as lapatinib have been investigated for the treatment of ErbB2-positive metastatic breast cancer. In a comprehensive analysis of cardiac safety data from all lapatinib trials completed to date, which included 3558 healthy volunteers and patients with a variety of solid cancers on 43 trials, the overall incidence of left ventricular ejection fraction declines was 1.6%, with 0.2% of patients experiencing symptomatic CHF. Risk factors that might predict for cardiac dysfunction with ErbB2-targeted therapy are actively under investigation and will aid in the identification of at-risk populations and in the development of strategies for risk minimization in the future. It is important to note that, while careful cardiac monitoring is required for all patients receiving ErbB2-targeted therapy in any disease setting, the overall impact of these agents on the outcomes of patients with ErbB2-positive breast cancer has been dramatic and positive.

Original languageEnglish (US)
JournalClinical Breast Cancer
Volume8
Issue numberSUPPL. 3
DOIs
StatePublished - 2008

Fingerprint

Anthracyclines
Breast Neoplasms
Incidence
Therapeutics
Heart Failure
Neoplasms
Biological Factors
Cardiac Myocytes
Stroke Volume
Protein-Tyrosine Kinases
Disease-Free Survival
Cardiotoxicity
Trastuzumab
Myocardium
Healthy Volunteers
Monoclonal Antibodies
Safety
lapatinib

Keywords

  • Brain natriuretic peptide
  • Lapatinib
  • Trastuzumab
  • Troponin I

ASJC Scopus subject areas

  • Cancer Research

Cite this

Cardiac toxicity of ErbB2-targeted therapies : What do we know? / Perez, Edith A.

In: Clinical Breast Cancer, Vol. 8, No. SUPPL. 3, 2008.

Research output: Contribution to journalArticle

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abstract = "The potential for cardiac toxicity in association with targeted biologic agents was first observed with trastuzumab, a monoclonal antibody that targets the ErbB2/HER2 receptor. In the pivotal trial of trastuzumab in ErbB2-positive metastatic cancer, an increased incidence of serious cardiac events was observed, particularly when trastuzumab was administered in combination with anthracyclines. The ErbB2 receptor is expressed on cardiomyocytes, in addition to tumor tissue, where it exerts a protective effect on cardiac function; thus, interference with ErbB2-signaling may block this protective effect. However, in contrast to anthracycline-induced cardiac toxicity, trastuzumab-related cardiac dysfunction does not appear to increase with cumulative dose or to be associated with ultrastructural changes in the myocardium and is generally reversible. When used in adjuvant regimens for the treatment of ErbB2-positive early-stage breast cancer, trastuzumab has been shown to significantly improve disease-free and overall survival. The incidence of class III/IV congestive heart failure (CHF) ranged from 0.4{\%}-3.8{\%} in the major adjuvant trastuzumab trials. More recently, small-molecule tyrosine kinase inhibitors such as lapatinib have been investigated for the treatment of ErbB2-positive metastatic breast cancer. In a comprehensive analysis of cardiac safety data from all lapatinib trials completed to date, which included 3558 healthy volunteers and patients with a variety of solid cancers on 43 trials, the overall incidence of left ventricular ejection fraction declines was 1.6{\%}, with 0.2{\%} of patients experiencing symptomatic CHF. Risk factors that might predict for cardiac dysfunction with ErbB2-targeted therapy are actively under investigation and will aid in the identification of at-risk populations and in the development of strategies for risk minimization in the future. It is important to note that, while careful cardiac monitoring is required for all patients receiving ErbB2-targeted therapy in any disease setting, the overall impact of these agents on the outcomes of patients with ErbB2-positive breast cancer has been dramatic and positive.",
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