Abstract
Late cardiac complications from thoracic radiation of patients with Hodgkin lymphoma are of great concern. The authors investigated whether cardiac biomarkers could identify patients with early cardiac damage from thoracic radiation. Following completion of anthracycline-based chemotherapy, 14 patients with stage I-IIIA mediastinal Hodgkin lymphoma were enrolled on an IRB-approved prospective trial and agreed to serum evaluation of troponin, CK-MB, and BNP before beginning radiation, after completing radiation, and every 3 to 6 months for 5 years, during follow-up or until relapse. Among the 14 patients, median follow-up for the entire cohort was 5 years. No evidence in abnormal values in troponin or CK-MB was observed among the patient cohort. BNP levels demonstrated statistically significant higher values at various follow-up time points. Higher levels of BNP were observed among patients receiving higher anthracycline doses (>250 mg), but not among patients with higher mean heart radiation doses. In the first 5 years after treatment, no rise in CK-MB or troponin was identified. BNP levels significantly increased following treatment, with larger increases among patients who received higher doses of anthracyclines. Further investigation is warranted.
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