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Cardiac dysfunction associated with trastuzumab

Karen Lisa Smith1, Chau Dang, Andrew D Seidman

  • 1Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021, USA.

Expert Opinion on Drug Safety
|August 16, 2006
PubMed

Insights

Trastuzumab, an antibody targeting HER2-positive breast cancer, improves survival but can cause cardiac toxicity. Cardiac monitoring is now standard in clinical trials to manage this side effect.

Area of Science:

  • Oncology
  • Cardiology
  • Pharmacology

Background:

  • HER2/neu gene amplification occurs in ~25% of breast cancers, driving tumor progression.
  • Trastuzumab is a HER2-targeted therapy improving outcomes in HER2-positive breast cancer.
  • Cardiac toxicity is an identified adverse event associated with trastuzumab therapy.

Purpose of the Study:

  • To review cardiac toxicity findings in key trastuzumab clinical trials.
  • To describe the clinical characteristics of trastuzumab-associated cardiac toxicity.

Main Methods:

  • Review of pivotal Phase III clinical trials of trastuzumab.
  • Analysis of reported cardiac toxicity data.
  • Characterization of clinical presentation and risk factors.

Main Results:

  • Trastuzumab significantly improves survival and reduces recurrence in HER2-overexpressing breast cancer.
  • Cardiac toxicity emerged as an unexpected adverse event in early trials.
  • Prospective cardiac monitoring is now integrated into trastuzumab trials.

Conclusions:

  • Trastuzumab is effective for HER2-positive breast cancer but requires cardiac monitoring.
  • Understanding trastuzumab-associated cardiac toxicity is crucial for patient management.
  • Ongoing research and monitoring are essential for safe and effective HER2-targeted therapy.

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