A J A T Braat1, H Ahmadzadehfar2, S C Kappadath3, C L Stothers4, A Frilling5, C M Deroose6, P Flamen7, D B Brown4, D Y Sze8, A Mahvash9, M G E H Lam10. 1. Department of Radiology and Nuclear Medicine, Imaging Division, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands. a.j.a.t.braat@umcutrecht.nl. 2. Department of Nuclear Medicine, University Hospital Bonn, Bonn, Germany. 3. Department of Imaging Physics, University of Texas MD Anderson Cancer Center, Houston, TX, USA. 4. Department of Radiology and Radiologic Sciences, Vanderbilt University, Nashville, TN, USA. 5. Department of Surgery and Cancer, Imperial College London, London, UK. 6. Nuclear Medicine, University Hospital Leuven, Leuven, Belgium. 7. Department of Nuclear Medicine, Jules Bordet Institute, Brussels, Belgium. 8. Division of Interventional Radiology, Stanford University, Palo Alto, CA, USA. 9. Department of Interventional Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, USA. 10. Department of Radiology and Nuclear Medicine, Imaging Division, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
Abstract
PURPOSE: Peptide receptor radionuclide therapy (PRRT) and radioembolization are increasingly used in neuroendocrine neoplasms patients. However, concerns have been raised on cumulative hepatotoxicity. The aim of this sub-analysis was to investigate hepatotoxicity of yttrium-90 resin microspheres radioembolization in patients who were previously treated with PRRT. METHODS: Patients treated with radioembolization after systemic radionuclide treatment were retrospectively analysed. Imaging response according to response evaluation criteria in solid tumours (RECIST) v1.1 and clinical response after 3 months were collected. Clinical, biochemical and haematological toxicities according to common terminology criteria for adverse events (CTCAE) v4.03 were also collected. Specifics on prior PRRT, subsequent radioembolization treatments, treatments after radioembolization and overall survival (OS) were collected. RESULTS: Forty-four patients were included, who underwent a total of 58 radioembolization procedures, of which 55% whole liver treatments, at a median of 353 days after prior PRRT. According to RECIST 1.1, an objective response rate of 16% and disease control rate of 91% were found after 3 months. Clinical response was seen in 65% (15/23) of symptomatic patients after 3 months. Within 3 months, clinical toxicities occurred in 26%. Biochemical and haematological toxicities CTCAE grade 3-4 occurred in ≤ 10%, apart from lymphocytopenia (42%). Radioembolization-related complications occurred in 5% and fatal radioembolization-induced liver disease in 2% (one patient). A median OS of 3.5 years [95% confidence interval 1.8-5.1 years] after radioembolization for the entire study population was found. CONCLUSION: Radioembolization after systemic radionuclide treatments is safe, and the occurrence of radioembolization-induced liver disease is rare. LEVEL OF EVIDENCE: 4, case series.
PURPOSE: Peptide receptor radionuclide therapy (PRRT) and radioembolization are increasingly used in neuroendocrine neoplasmspatients. However, concerns have been raised on cumulative hepatotoxicity. The aim of this sub-analysis was to investigate hepatotoxicity of yttrium-90 resin microspheres radioembolization in patients who were previously treated with PRRT. METHODS:Patients treated with radioembolization after systemic radionuclide treatment were retrospectively analysed. Imaging response according to response evaluation criteria in solid tumours (RECIST) v1.1 and clinical response after 3 months were collected. Clinical, biochemical and haematological toxicities according to common terminology criteria for adverse events (CTCAE) v4.03 were also collected. Specifics on prior PRRT, subsequent radioembolization treatments, treatments after radioembolization and overall survival (OS) were collected. RESULTS: Forty-four patients were included, who underwent a total of 58 radioembolization procedures, of which 55% whole liver treatments, at a median of 353 days after prior PRRT. According to RECIST 1.1, an objective response rate of 16% and disease control rate of 91% were found after 3 months. Clinical response was seen in 65% (15/23) of symptomatic patients after 3 months. Within 3 months, clinical toxicities occurred in 26%. Biochemical and haematological toxicities CTCAE grade 3-4 occurred in ≤ 10%, apart from lymphocytopenia (42%). Radioembolization-related complications occurred in 5% and fatal radioembolization-induced liver disease in 2% (one patient). A median OS of 3.5 years [95% confidence interval 1.8-5.1 years] after radioembolization for the entire study population was found. CONCLUSION: Radioembolization after systemic radionuclide treatments is safe, and the occurrence of radioembolization-induced liver disease is rare. LEVEL OF EVIDENCE: 4, case series.
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