Abstract
Background The aim of this study was to determine the probable cardiotoxicity following radionuclide therapy (RNT), specifically peptide receptor radionuclide therapy (PRRT) with 177Lu-DOTATATE and radioligand therapy (RLT) with 177Lu-PSMA by evaluation of serum troponin I and cardiac profile change during a follow-up time.
Materials and Methods Patients with prostate cancer and neuroendocrine tumours (NETs) referred for PRRT and RLT, respectively, were enrolled in this study. The cardiac profiles of the patients were evaluated by a cardiologist and a cardiac history was obtained from all patients. Also, troponin I was measured before and 48 hours after treatment.
Results In this retrospective study for assessment of RLT associated cardiotoxicity, 24 patients were evaluated with a median age of 64 years (27–99 years) including 13 NET patients and 11 prostate cancer patients. Patients were followed up for 4 to 31 months which no cardiovascular problem was observed. In evaluation of troponin I, 39 RNT cycles were evaluated. In all patients, the value of troponin I was in normal range. In all patients, the median values of serum troponin I before and after treatment were 0.2 ± 0.02 (range: 0.00–0.42) and 0.28 ± 0.02 (range: 0.00–0.46) ng/ml, respectively (p > 0.05). In the prostate cancer patients, the median values of serum troponin I before and after treatment were 0.26 ± 0.04 (0.04–0.42) and 0.30 ± 0.04 (0.00–0.41) ng/ml, respectively (p > 0.05). In the NET patients, the median values of serum troponin I before and after treatment were 0.18 ± 0.03 (0.00–0.42) and 0.17 ± 0.03 (0.00–0.46) ng/ml, respectively (p > 0.05).
Conclusion PRRT with 177Lu-DOTATATE and RLT with 177Lu-PSMA as emerging therapeutic modalities have no significant cardiotoxicity. However, further well-designed studies are recommended.
Zusammenfassung
Hintergrund Ziel dieser Studie war die Bestimmung der voraussichtlichen Kardiotoxizität nach Radionuklidtherapie (RNT), speziell der Peptidrez