177Lutetium-DOTATATE in Children With Primary Refractory or Relapsed High-risk Neuroblastoma

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177Lutetium-DOTATATE in Children With Primary Refractory or Relapsed High-risk Neuroblastoma

Study Purpose

The LuDO-N Trial is a multi-centre phase II clinical trial on 177Lu-DOTATATE treatment of recurrent or relapsed high-risk neuroblastoma in children. The LuDO-N Trial builds on the experience from the previous LuDO Trial and utilises an intensified dosing schedule to deliver 2 doses over a 2-week period, in order to achieve a maximal effect on the often rapidly progressing disease. This strategy requires a readiness for autologous stem cell transplantation in all patients, but is not anticipated to increase the risk of long-term sequelae, since the cumulative radiation dose remains unchanged. The primary aim of the study is to assess the response to 177Lu-DOTATATE treatment at 1 and 4 months after ende of treatment. Secondary aims are to assess survival and treatment-related toxicity. Additional aim are to correlate tumour dosimetry with response, correlate SSTR-2 expression with 68Ga-DOTATATE uptake and to correlate the uptake with the treatment response.

Recruitment Criteria

Accepts Healthy Volunteers Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms	No
Study Type An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes. An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes. Searching Both is inclusive of interventional and observational studies.	Interventional
Eligible Ages	18 Months - 18 Years
Gender	All

More Inclusion & Exclusion Criteria

Inclusion Criteria:

1. Pathology 1.1. Histologically confirmed diagnosis of neuroblastoma 1.2. Immunohistochemical staining for somatostatin receptors (SSTR) performed from primary tumor tissue when available. 2. Relapsed or primary refractory high-risk neuroblastoma: International Neuroblastoma Staging System (INSS) stage 4 disease or International Neuroblastoma Risk Group Staging System (INRGSS) stage M disease. 3. Age >18 months and < 18 years of age at the time of enrolment into this study. 4. Life expectancy of greater than 3 months. 5. Performance Status 5.1. Karnofsky > 50% (for patients > 12 years of age) 5.2. Lansky > 50% (for patients ≤ 12 years of age) 6. Prior treatment 6.1. Two-week washout from any prior treatment 6.2. Patients must have recovery of hematological toxicity following previous therapy 6.3. Adequate recovery from major surgery prior to receiving study treatment. 7. Diagnostic imaging 7.1. Uptake in the primary tumor or metastatic tumour deposits on 68Ga-DOTATATE PET/CT at least higher than the liver uptake and performed within two months prior to registration 7.2. 123I-mIBG scintigraphy to be performed within two months prior to registration 7.3. CT or MRI of the primary tumor and bulky metastatic sites within two months prior to registration. 8. Laboratory requirements to be performed within 7 days prior to commencing trial treatment 8.1. Hematology: 8.1.1. Hemoglobin, If Hb is <120 g/L then patient will receive a blood transfusion prior to commencing trial treatment 8.1.2. Absolute neutrophil count > 1.0 x 109/L 8.1.3. Absolute Platelets > 100 x 109/L 8.2. Biochemistry: 8.2.1. Bilirubin within 1.5 x ULN 8.2.2. ALT within 2.5 x ULN 8.2.3. AST within 2.5 x ULN 8.2.4. GGT within 5 x ULN 8.2.5. ALP within 5 x ULN 8.2.6. Glomerular filtration rate >50mL/min/1.73m2 assessed by a recognised method, such as inulin, 51Cr-EDTA, 99mTc-DTPA or iohexol clearance and performed within 2 months prior to registration 8.2.7. Urinary catecholamine metabolites measured within 2 months prior to registration. 9. Peripheral blood stem cells (PBSC) 9.1. A minimum of 4 x106 CD34+ cells/kg (optimally 6 x106 CD34+ cells/kg) must be available for each study subject prior to registering. 10. Written informed consent from patient and/or parent(s) or legal guardian(s) in accordance with national regulations, prior to registration or any trial-related screening procedures.

Exclusion Criteria:

1. Not fit enough to undergo proposed study treatment, as assessed by national PI, considering precautions defined in the latest version of the Lutathera SmPC. 2. Pregnant or lactating patient. 3. Concurrent treatment with any anti-tumor agents. 4. Prior treatment with other radiolabeled somatostatin analogues. 5. Any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule; those conditions should be discussed with the patient or legal guardian before registration in the trial. 6. Hypersensitivity to any component of the investigational drug Lutathera® 7. Treatment with long-acting somatostatin analogues within 30 days prior the administration of Lutathera®

Trial Details

Trial ID: This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.	NCT04903899
Phase Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans. Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data. Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs. Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.	Phase 2
Lead Sponsor The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.	Jakob Stenman
Principal Investigator The person who is responsible for the scientific and technical direction of the entire clinical study.	Jakob Stenman, MD PhD
Principal Investigator Affiliation	Karolinska University Hospital
Agency Class Category of organization(s) involved as sponsor (and collaborator) supporting the trial.	Other, Industry
Overall Status	Recruiting
Countries	Denmark, Finland, Lithuania, Netherlands, Norway, Sweden
Conditions The disease, disorder, syndrome, illness, or injury that is being studied.	Neuroblastoma Recurrent, Neuroblastoma

Arms & Interventions

Arms

Experimental: 177Lu-DOTATATE

A total of two doses of 177Lu-DOTATATE will be administered intravenously. The minimum time between treatments is 2 weeks.

Interventions

Combination Product: - 177Lu-DOTATATE

A weight-based activity of 200 MBq kg-1 will be used for the first dose. The activity of the second dose will be calculated based on whole body activity scans as well as SPECT CT scans to determine the absorbed kidney dose. The aim is to administer 177Lu-DOTATATE corresponding to a whole-body dose of 1,2 Gy, with a cumulative whole-body dose of about 2,4 Gy over two courses, and not exceeding a cumulative renal dose of 23 Gy, in order to avoid renal toxicity.

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