Health Effects After Anthracycline and Radiation Therapy (HEART): Dexrazoxane and Prevention of Anthracycline-related Cardiomyopathy
Given the critical role anthracyclines have in many effective cancer treatments and the risk
for subsequent cardiotoxicity associated with this class of agents, development of an
effective cardioprotective strategy is of great importance. Although adult studies have
shown that dexrazoxane (DRZ) is effective in minimizing cardiomyopathy/heart failure (CHF)
after anthracycline therapy, short and long-term data in children are much more limited.
Furthermore, concerns regarding DRZ's interaction with cancer therapies and possible
association with an increased risk of second cancers have limited its use among children
despite possible protection against premature CHF. To address these gaps in knowledge, using
a cross-sectional study design, we propose to ascertain echocardiographic and serum
biomarkers of cardiac injury in a cohort of long-term pediatric T-cell leukemia and Hodgkin
lymphoma survivors enrolled on 3 front-line Children's Oncology Group (COG) clinical trials
(POG 9404, 9425, 9426) between 1996-2001 that featured upfront DRZ randomization and a range
of anthracycline exposures commonly used in contemporary therapy (100-360 mg/m2
doxorubicin). Our primary aim will be to determine whether patients randomized to the
experimental DRZ arms have decreased markers of myocardial injury compared with patients
treated without DRZ. Specifically, this will include a one-time measurement of an
echocardiographic index of pathologic left ventricular (LV) remodeling (wall
thickness-dimension ratio), complemented by serum biomarkers and a physical examination for
signs and symptoms of CHF. We will also evaluate whether DRZ's cardioprotective effect is
modified by anthracycline dose, chest radiation, and selected demographic factors (age at
cancer diagnosis, current age, sex). In secondary analysis, we will also update the overall-
and event-free survival rates between patients on the DRZ and non-DRZ arms. Finally, we will
determine whether projected quality-adjusted life years differed by randomization status,
accounting for premature cardiac disease, primary disease relapse, and second cancers.
Observational
Observational Model: Case Control, Time Perspective: Prospective
Left ventricular (LV) thickness-to-dimension ratio
A decrease in echocardiographically derived measure of pathologic left ventricle (LV) remodeling which has been shown to be an important earlier surrogate measure of subsequent heart failure in both anthracycline-exposed pediatric cancer survivors5 and in the general pediatric and adult cardiomyopathy/heart failure population. This ratio can be derived from standard measurements.
2 years
No
Eric J Chow, MD, MPH
Study Chair
Fred Hutchinson Cancer Research Center
United States: Federal Government
ALTE11C2
NCT01790152
March 2013
Name | Location |
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Children's Oncology Group | Arcadia, California 91006-3776 |