Childhood cancer
As survival rates from childhood cancer have improved, there is a need to address the increased risk of cardiovascular-related mortality (estimated at 8-10 times higher than the general population) as well as cancer relapse, according to the writing group.
Among patients recruited to the Childhood Cancer Survivor Study, there was a 9-fold increase in cerebrovascular accident, 10-fold increased risk of coronary artery disease, and 15-fold increase in heart failure for childhood cancer survivors, compared with their siblings who were cancer free.
Cancer treatments such as radiation exposure are linked to increased rates of myocardial infarction, heart failure, valvular abnormalities, and pericardial disease at a twofold to sixfold higher rate when administered at a greater than 1,500 centigray dose, compared to cancer survivors who did not receive radiation, the authors wrote.
Anthracycline treatment is associated with a dose-dependent increase in the risk of dilated cardiomyopathy, while hematopoietic stem cell transplantation may increase the risk of CVD-related mortality from heart failure, cerebrovascular accident, cardiomyopathy, coronary artery disease, and rhythm disorders.
In treating childhood cancer survivors for CVD risk factors, “a low threshold should be used when considering the initiation of pharmacological agents because of the high risk of these youth,” and standard pharmacotherapies can be used, the authors said. “Treatment of cardiovascular risk factors should consider the cancer therapies the patient has received previously.”
In the AHA statement, Dr. de Ferranti and her colleagues also outlined epidemiology, screening, and treatment data for other cardiovascular risk factors such as familial hypercholesterolemia, Lipoprotein(a), hypertension, chronic kidney disease, congenital heart disease, Kawasaki disease, and heart transplantation.
Some members of the writing group reported research grants from Amgen, Sanofi, the Wisconsin Partnership Program, and the National Institutes of Health. One author reported unpaid consultancies with Novo Nordisk, Orexigen, and Vivus.
SOURCE: de Ferranti SD et al. Circulation. 2019 Feb 25. doi: 10.1161/CIR.0000000000000618.