Abstract
Purpose
The objective of this phase IIa, open-label, single-centre, single-arm, two-stage clinical trial was to evaluate the safety and activity of 177-lutetium DOTATATE (LuDO) molecular radiotherapy in neuroblastoma.
Methods
Children with relapsed or refractory metastatic high-risk neuroblastoma were treated with up to four courses of LuDO. The administered activity was 75 to 100 MBq kg−1 per course, spaced at 8- to 12-week intervals. Outcomes were assessed by the International Neuroblastoma Response Criteria (primary outcome), progression-free survival (PFS), and overall survival (OS).
Results
The trial recruited 21 patients; eight received the planned four courses. There was dose-limiting haematologic toxicity in one case, but no other significant haematologic or renal toxicities. None of 14 evaluable patients had an objective response at 1 month after completion of treatment (Wilson 90% CI 0.0, 0.16; and 95% CI is 0.0, 0.22). The trial did not therefore proceed to the second stage. The median PFS was 2.96 months (95% CI 1.71, 7.66), and the median OS was 13.0 months (95% CI 2.99, 21.52).
Conclusion
In the absence of any objective responses, the use of LuDO as a single agent at the dose schedule used in this study is not recommended for the treatment of neuroblastoma. There are several reasons why this treatment schedule may not have resulted in objective responses, and as other studies do show benefit, the treatment should not be regarded as being of no value. Further trials designed to overcome this schedule’s limitations are required.
Trial registration
ISRCTN98918118; URL: https://www.isrctn.com/search?q=98918118
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Abbreviations
- AE:
-
Adverse event
- CT:
-
Computed tomography
- CTCAE:
-
Common Terminology Criteria for Adverse Events
- FDG:
-
Fluorodeoxyglucose
- GaDO:
-
68-Gallium DOTATATE
- GFR:
-
Glomerular filtration rate
- Gy:
-
Gray
- h:
-
Hour
- INRC:
-
International Neuroblastoma Response Criteria
- kg:
-
Kilogram
- kVp:
-
Kilovoltage peak
- l:
-
Litre
- L:
-
Levo
- LuDO:
-
177-Lutetium DOTATATE
- m:
-
Metre
- mA:
-
Milliamperes
- MBq:
-
Megabecquerel
- mIBG:
-
Meta-iodobenzylguanidine
- MRI:
-
Magnetic resonance imaging
- OS:
-
Overall survival
- PET:
-
Positron emission tomography
- PFS:
-
Progression-free survival
- PRRT:
-
Peptide receptor radionuclide therapy
- SAE:
-
Serious adverse event
- SIOPEN:
-
International Society of Paediatric Oncology European Neuroblastoma clinical research group
- SPECT:
-
Single-photon emission computed tomography
- SUVmax :
-
Maximum standardized uptake value
- UK:
-
United Kingdom
- USA:
-
United States of America
- USAN:
-
United States Adopted Name
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Funding
This trial was funded by the Cancer Research UK (reference C17807/A14091) and Joining Against Cancer in Kids, and supported by researchers at the National Institute for Health Research University College London Hospitals Biomedical Research Centre.
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Contributions
Conception and design: Jennifer E. Gains, Veronica Moroz, Matthew D. Aldridge, Jamshed B. Bomanji, Keith Wheatley, Mark N. Gaze
Clinical care of patients: Jennifer E. Gains, Connie Peet, Matthew D. Aldridge, S Wan, Jamshed B. Bomanji, Mark N. Gaze
Collection and assembly of data: Connie Peet, Matthew D. Aldridge, Jennifer Laidler
Data analysis and interpretation: Jennifer E. Gains, Veronica Moroz, Simon Wan, Jamshed B. Bomanji, Matthew D. Aldridge, Keith Wheatley, Mark N. Gaze
Manuscript writing: all authors
Final approval of the manuscript: all authors
Accountable for all aspects of work: all authors
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Gains, J.E., Moroz, V., Aldridge, M.D. et al. A phase IIa trial of molecular radiotherapy with 177-lutetium DOTATATE in children with primary refractory or relapsed high-risk neuroblastoma. Eur J Nucl Med Mol Imaging 47, 2348–2357 (2020). https://doi.org/10.1007/s00259-020-04741-x
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DOI: https://doi.org/10.1007/s00259-020-04741-x