Treatment With the Radiolabeled Somatostatin Analog [177Lu-DOTA0,Tyr3]Octreotate: Toxicity, Efficacy, and Survival

American Society of Clinical Oncology (ASCO) - Tập 26 Số 13 - Trang 2124-2130 - 2008
Dik J. Kwekkeboom1, Wouter W. de Herder2, Boen L.R. Kam2, Casper H.J. van Eijck2, Marc van Essen2, P.P.M. Kooij2, Richard A. Feelders2, Maarten O. van Aken2, Eric P. Krenning2
1Department of Nuclear Medicine, Erasmus Medical Center, Dr Molewaterplein 40, 3015 GD Rotterdam, the Netherlands. [email protected]
2From the Departments of Nuclear Medicine, Internal Medicine, and Surgery, Erasmus Medical Center, Rotterdam, the Netherlands

Tóm tắt

Purpose Despite the fact that most gastroenteropancreatic neuroendocrine tumors (GEPNETs) are slow-growing, median overall survival (OS) in patients with liver metastases is 2 to 4 years. In metastatic disease, cytoreductive therapeutic options are limited. A relatively new therapy is peptide receptor radionuclide therapy with the radiolabeled somatostatin analog [177Lu-DOTA0,Tyr3]octreotate. Here we report on the toxicity and efficacy of this treatment, performed in over 500 patients. Patients and Methods Patients were treated up to a cumulative dose of 750 to 800 mCi (27.8-29.6 GBq), usually in four treatment cycles, with treatment intervals of 6 to 10 weeks. Toxicity analysis was done in 504 patients, and efficacy analysis in 310 patients. Results Any hematologic toxicity grade 3 or 4 occurred after 3.6% of administrations. Serious adverse events that were likely attributable to the treatment were myelodysplastic syndrome in three patients, and temporary, nonfatal, liver toxicity in two patients. Complete and partial tumor remissions occurred in 2% and 28% of 310 GEPNET patients, respectively. Minor tumor response (decrease in size > 25% and < 50%) occurred in 16%. Median time to progression was 40 months. Median OS from start of treatment was 46 months, median OS from diagnosis was 128 months. Compared with historical controls, there was a survival benefit of 40 to 72 months from diagnosis. Conclusion Treatment with [177Lu-DOTA0,Tyr3]octreotate has few adverse effects. Tumor response rates and progression-free survival compare favorably to the limited number of alternative treatment modalities. Compared with historical controls, there is a benefit in OS from time of diagnosis of several years.

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