In:
BMC Cancer, Springer Science and Business Media LLC, Vol. 22, No. 1 ( 2022-12-22)
Abstract:
Although neuroendocrine tumors (NET) are classed as rare, they have a high prevalence and their incidence is increasing. Effective treatment with lutetium 17 -[177Lu]Lu-oxodotreotide (Lutathera®) is possible in patients with well-differentiated NET, improving progression-free survival (PFS), overall survival (OS), and quality of life (QoL). However, progression does occur. Retreatment with additional Lutathera® cycles is an option to extend PFS and OS. Two retreatment cycles are usually proposed. We aim to compare four versus two Lutathera® retreatment cycles in patients with new progression of a well-differentiated intestinal NET. Methods This will be a multicenter, randomized, controlled, open-label, phase II study in France (ReLUTH). The aim is to evaluate the efficacy of retreatment with Lutathera® in patients with progressive intestinal NET (determined by somatostatin-receptor positive imaging) after previous treatment with two cycles of Lutathera®. Before randomization, all patients will have already received two Lutathera® retreatment cycles (7.4 GBq infusion each, 8 weeks apart). A total of 146 patients will be randomized (1:1) to two additional cycles of Lutathera® (7.4 GBq infusion each, separated by 8 weeks) or to no treatment (active surveillance). Primary objective: efficacy of two additional Lutathera® retreatment cycles compared to active surveillance over 6 months. Primary endpoint: disease control rate at 6 months from randomization (defined as Complete Response, Partial Response, and Stable Disease in the Response Evaluation Criteria In Solid Tumours) with an evaluation every 2 months. A secondary objective will be the safety, as well as the PFS, OS, and QoL. It is expected that the efficacy of retreatment will increase after two additional Lutathera® cycles, with no increased safety concerns. Discussion Our prospective, randomized controlled study may lead to new recommendations for the use of Lutathera® in patients with intestinal progressive NET, and should confirm that four cycles will be more effective than two, with limited adverse impact on safety. Four Lutathera® treatment cycles have the potential to prolong life and improve quality of life in patients. Trial registration ClinicalTrials.gov: NCT04954820.
Type of Medium:
Online Resource
ISSN:
1471-2407
DOI:
10.1186/s12885-022-10443-4
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2022
detail.hit.zdb_id:
2041352-X
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