NCT04915144

177Lu-DOTATOC for the Treatment of Patients With Somatostatin Receptor Positive NETs

A Prospective Randomized Study of the Efficacy and Safety of 177Lu-DOTATOC With Either Standard or Personalized Dosing for the Treatment of Patients With Somatostatin Receptor Positive NETs

• Status: Withdrawn
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 0 (actual)
• Sponsor: British Columbia Cancer Agency · Academic / Other
• Sex: All
• Age: 19 Years
• Healthy volunteers: Not accepted

Summary

This study is to assess if personalized peptide receptor radionuclide therapy (PRRT) with 177Lu-DOTATOC results in fewer adverse events than standard PRRT. Subjects will be randomized to either receive personalized or standard PRRT. Personalized PRRT will be determined based on dosimetry calculations after the first cycle. In addition comparisons, will be made with progression-free survival, serial CT imaging, ctDNA, and quality of life questionnaires. Subjects will be followed for 5 years or until they have progression and are switched to another systemic treatment (not including treatment with somatostatin analogues).

Detailed description

Overall, 200 subjects will be randomized (1:1 randomization ratio) to receive standard injected activities of 177Lu-DOTATOC PRRT or personalized injection of 177Lu-DOTATOC PRRT. Randomization will be stratified for grade and primary location. Screening Phase: Subjects will be screened against the inclusion and exclusion criteria. Screening by SSR imaging will be completed to determine expression of SSR and feasibility of treatment by PRRT. Once eligibility has been confirmed they will be randomized. Subjects will undergo a physical exam, complete a medical history questionnaire, quality of life questionnaires, blood work, and a diagnostic CT. Treatment Phase: During the treatment phase, subjects will undergo 4 cycles of treatment. Each treatment cycle will be followed by 2 dosimetry SPECT/CT scans on day 1 (18 - 32 hours after treatment administration) and day 2 (64 - 80h after treatment administration) After cycle 3 quality of life questionnaires will be completed again. Follow up Phase: At the end of treatment or after discontinuation of any cause, subjects will be followed for 5 years to continue data collection for the other objectives. Objective tumour response will be assessed every 6 months by diagnostic CT according to the RECIST 1.1 criteria.

Conditions

• Neuroendocrine Tumors
• Carcinoid Tumor
• Pulmonary Carcinoid Tumor
• Gastroenteropancreatic Neuroendocrine Tumor
• Vipoma
• Insulinoma
• Gastrinoma

Interventions

Type	Name	Description
DRUG	177Lu-DOTATOC	Subjects will receive 177Lu-DOTATOC PRRT treatment over 4 cycles, each cycle occurs every 8 weeks.

Timeline

• Start date: 2023-01-15
• Primary completion: 2027-12-31
• Completion: 2031-12-31
• First posted: 2021-06-07
• Last updated: 2023-02-21

Locations

1 site across 1 country: Canada