Dose-dense adjuvant doxorubicin and cyclophosphamide is not associated with frequent short-term changes in left ventricular ejection fraction

Patrick G. Morris, Maura Dickler, Heather L. McArthur, Tiffany Traina, Steven Sugarman, Nancy Lin, Beverly Moy, Steven Come, Laura Godfrey, Benjamin Nulsen, Carol Chen, Richard Steingart, Hope Rugo, Larry Norton, Eric Winer, Clifford A. Hudis, Chau T. Dang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Purpose: Doxorubicin and cyclophosphamide (AC) every 3 weeks has been associated with frequent asymptomatic declines in left ventricular ejection fraction (LVEF). Dose-dense (dd) AC followed by paclitaxel (P) is superior to the same regimen given every third week. Herein, we report the early cardiac safety of three sequential studies of ddAC alone or with bevacizumab (B). Patients and Methods: Patients with HER2-positive breast cancer were treated on two trials: ddAC followed by P and trastuzumab (T) and ddAC followed by PT and lapatinib. Patients with HER2-normal breast cancer were treated with B and ddAC followed by B and nanoparticle albumin-bound P. Prospective LVEF measurement by multigated radionuclide angiography scan before and after every 2 week AC for 4 cycles and at month 6 from all three trials were aggregated to determine the early risks of cardiac dysfunction. Results: From January 2005 to May 2008, 245 patients were enrolled. The median age was 47 years (range, 27 to 75 years). Median LVEF pre-ddAC was 68% (range, 52% to 82%). LVEF post-ddAC was available in 241 patients (98%) and the median was unchanged at 68% (range, 47% to 81%). Per protocol no patients were ineligible for subsequent targeted biologic therapy based on LVEF decline post-ddAC. In addition, LVEF was available in 222 patients (92%) at 6 months, at which time the median LVEF was similar at 65% (range, 24% to 80%). Within 6 months of initiating chemotherapy, three patients (1.2%; 95% CI, 0.25% to 3.54%) developed CHF, all of whom received T. Conclusion: Dose-dense AC with or without concurrent bevacizumab is not associated with frequent acute or short-term declines in LVEF.

Original languageEnglish (US)
Pages (from-to)6117-6123
Number of pages7
JournalJournal of Clinical Oncology
Volume27
Issue number36
DOIs
StatePublished - Dec 20 2009
Externally publishedYes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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