Grace Kong1,2, Simona Grozinsky-Glasberg3, Michael S Hofman1,2, Jason Callahan1, Amichay Meirovitz4, Ofra Maimon4, David A Pattison1,2, David J Gross3, Rodney J Hicks1,2,5. 1. Centre for Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia. 2. Neuroendocrine Service, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia. 3. Neuroendocrine Tumour Unit, Endocrinology and Metabolism Service, Hadassah-Hebrew University Medical Centre, 91220 Jerusalem, Israel. 4. Oncology Department and Radiation Therapy Unit, Hadassah-Hebrew University Medical Center, 91120 Jerusalem, Israel. 5. The Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria 3010, Australia.
Abstract
Purpose: Treatment options for unresectable paraganglioma (PGL)/pheochromocytoma (PCC), especially with uncontrolled secondary hypertension (HTN), are limited. Preliminary studies with peptide receptor radionuclide therapy (PRRT) suggest efficacy, but data on HTN control and survival are lacking. We assessed PRRT outcomes in such patients from two referral centers. Methods: Twenty consecutive patients (13 men; age range, 21 to 77 years) with high somatostatin receptor (SSTR) expression treated with 177Lu-DOTA-octreotate, nine with radiosensitizing chemotherapy, were retrospectively reviewed. Median cumulative activity was 22 GBq (median 4 cycles). Fourteen patients were treated for uncontrolled HTN and six for progressive or symptomatic metastatic disease or local recurrence. Results: Three months after PRRT, 8 of 14 patients treated for HTN required reduced medication doses, 5 had no change in anti-HTN doses, and 1 was lost to follow-up. Eighty-six percent had serum chromogranin-A reduction. Of the entire cohort, 36% had disease regression (29% partial and 7% minor response) on computed tomography, with stable findings in 50%. Three other patients had bony disease evaluable only on SSTR imaging (2 partial response and 1 stable). Median progression-free survival was 39 months; median overall survival was not reached (5 deaths; median follow-up, 28 months). Four patients had grade 3 lymphopenia; 2 had grade 3 thrombocytopenia. Renal impairment in 2 patients was attributed to underlying disease processes. Conclusions: PRRT achieves worthwhile clinical and biochemical responses with low toxicity and encouraging survival in PGL/PCC. Because PRRT has logistic and radiation-safety advantages compared to 131I-MIBG therapy, further prospective evaluation is warranted.
Purpose: Treatment options for unresectable paraganglioma (PGL)/pheochromocytoma (PCC), especially with uncontrolled secondary hypertension (HTN), are limited. Preliminary studies with peptide receptor radionuclide therapy (PRRT) suggest efficacy, but data on HTN control and survival are lacking. We assessed PRRT outcomes in such patients from two referral centers. Methods: Twenty consecutive patients (13 men; age range, 21 to 77 years) with high somatostatin receptor (SSTR) expression treated with 177Lu-DOTA-octreotate, nine with radiosensitizing chemotherapy, were retrospectively reviewed. Median cumulative activity was 22 GBq (median 4 cycles). Fourteen patients were treated for uncontrolled HTN and six for progressive or symptomatic metastatic disease or local recurrence. Results: Three months after PRRT, 8 of 14 patients treated for HTN required reduced medication doses, 5 had no change in anti-HTN doses, and 1 was lost to follow-up. Eighty-six percent had serum chromogranin-A reduction. Of the entire cohort, 36% had disease regression (29% partial and 7% minor response) on computed tomography, with stable findings in 50%. Three other patients had bony disease evaluable only on SSTR imaging (2 partial response and 1 stable). Median progression-free survival was 39 months; median overall survival was not reached (5 deaths; median follow-up, 28 months). Four patients had grade 3 lymphopenia; 2 had grade 3 thrombocytopenia. Renal impairment in 2 patients was attributed to underlying disease processes. Conclusions: PRRT achieves worthwhile clinical and biochemical responses with low toxicity and encouraging survival in PGL/PCC. Because PRRT has logistic and radiation-safety advantages compared to 131I-MIBG therapy, further prospective evaluation is warranted.
Authors: Abhishek Jha; Alexander Ling; Corina Millo; Garima Gupta; Bruna Viana; Frank I Lin; Peter Herscovitch; Karen T Adams; David Taïeb; Adam R Metwalli; W Marston Linehan; Alessandra Brofferio; Constantine A Stratakis; Electron Kebebew; Maya Lodish; Ali Cahid Civelek; Karel Pacak Journal: Eur J Nucl Med Mol Imaging Date: 2017-12-04 Impact factor: 9.236
Authors: Ivana Jochmanova; April Melody T Abcede; Ruby Jane S Guerrero; Chandy Lou P Malong; Robert Wesley; Thanh Huynh; Melissa K Gonzales; Katherine I Wolf; Abhishek Jha; Marianne Knue; Tamara Prodanov; Naris Nilubol; Leilani B Mercado-Asis; Constantine A Stratakis; Karel Pacak Journal: J Cancer Res Clin Oncol Date: 2020-02-15 Impact factor: 4.553