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

Phase 2

Recruiting

• Conditions: Neuroblastoma; Neuroblastoma Recurrent

• Registration Number: NCT04903899
• Lead Sponsor: Jakob Stenman

Brief Summary

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.

Detailed Description

Not available

Study Timeline

• Study Start: 2021-05-19
• Study First Submitted: 2021-05-21
• Study First Submitted QC: 2021-05-25
• Study First Posted: 2021-05-27
• Status Verified: 2024-03
• Last Update Submitted: 2025-02-07
• Last Update Posted: 2025-02-11
• Primary Completion: 2026-05-20
• Study Completion: 2031-05-20

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 24

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: INSS stage 4 disease or INRGSS stage M disease
3. Age >18 months 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 > 50 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 2 x106 CD34+ cells/kg (optimally 6 x106 CD34+ cells/kg) must be available for each study subject prior to registration
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 177Lutetium-DOTATATE SmPC.
2. Pregnant or lactating patient
3. Concurrent treatment with any anti-tumor agents
4. Prior treatment with other radiolabeled somatostatin analogues
5. Hypersensitivity to any component of the investigational drug 177Lutetium-DOTATATE
6. Treatment with long-acting somatostatin analogues within 30 days, or with short-acting somatostatin analogues within 24 hours prior the administration of 177Lutetium-DOTATATE

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Primary Outcome Measures

Name	Time	Method
Treatment response assessed in accordance with the Revised International Neuroblastoma Response Criteria (INRC) - 1 months after End of Treatment	1 months following end of treatment	Treatment response assessed in accordance with the Revised International Neuroblastoma Response Criteria (INRC)

Secondary Outcome Measures

Name	Time	Method
Progression-free survival	Time from registration to progression or death, up to 5 years following end of treatment	Time to progress or death, whichever occurs first
Number and severity of treatment-related adverse events	Up to 5 years after end of treatment	Number and severity of treatment-related adverse events
Treatment response assessed in accordance with the Revised International Neuroblastoma Response Criteria (INRC) - 4 months after End of Treatment	4 months following end of treatment	Treatment response assessed in accordance with the Revised International Neuroblastoma Response Criteria (INRC)
Overall survival - up to 5 years after End of Treatment	Time from registration to the the date of death, up to 5 years following end of treatment	Overall survival

Trial Locations

Locations (5)

Rigshospitalet; 🇩🇰 Copenhagen, Denmark

Vilnius University Hospital; 🇱🇹 Vilnius, Lithuania

Princess Maxima Center for Pediatric Oncology; 🇳🇱 Utrecht, Netherlands

Oslo University Hospital, Rikshospitalet; 🇳🇴 Oslo, Norway

Karolinska University Hospital; 🇸🇪 Stockholm, Sweden