Cardiotoxicity associated with the cancer therapeutic agent sunitinib malate

M L Telli1, R M Witteles, G A Fisher

  • 1Division of Medical Oncology, Department of Medicine, Stanford University, 875 Blake Wilbur Drive, Stanford, CA 94305, USA.

Abstract

Insights

Sunitinib treatment for metastatic renal cell carcinoma can cause symptomatic heart failure in 15% of patients. Risk factors include prior heart failure and coronary artery disease, necessitating further research into sunitinib cardiotoxicity.

Area of Science:

  • Cardiology
  • Oncology

Background:

  • Sunitinib is used for metastatic renal cell carcinoma.
  • A phase III trial reported reversible left ventricular ejection fraction decline in 21% of patients.
  • A high incidence of symptomatic heart failure prompted this institutional review.

Purpose of the Study:

  • To analyze the incidence and risk factors of sunitinib-induced cardiotoxicity.
  • To evaluate symptomatic heart failure in patients treated with sunitinib.

Main Methods:

  • Retrospective analysis of patients treated with sunitinib at Stanford University (2004-2007).
  • Identification of patients with symptomatic grade 3/4 left ventricular systolic dysfunction.
  • Analysis of potential cardiac risk factors.

Main Results:

  • Seven out of 48 assessable patients (15%) developed symptomatic grade 3/4 left ventricular dysfunction.
  • Cardiac dysfunction occurred 22-435 days after sunitinib initiation.
  • History of congestive heart failure, coronary artery disease, and lower BMI were associated with increased risk.

Conclusions:

  • Sunitinib treatment resulted in symptomatic heart failure in 15% of patients at this institution.
  • Three patients experienced persistent cardiac dysfunction despite treatment.
  • Further research on sunitinib cardiotoxicity is crucial given its expanding oncologic use.

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