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Lutetium 177Lu-Edotreotide Versus Best Standard of Care in Well-differentiated Aggressive Grade-2 and Grade-3 GastroEnteroPancreatic NeuroEndocrine Tumors (GEP-NETs) - COMPOSE

A Prospective, Randomised, Controlled, Open-label, Multicentre Study to Evaluate Efficacy, Safety and Patient-Reported Outcomes of Peptide Receptor Radionuclide Therapy (PRRT) With 177Lu-Edotreotide Compared to Best Standard of Care in Patients With Well-differentiated Aggressive Grade 2 and Grade 3, Somatostatin Receptor-Positive (SSTR+), Neuroendocrine Tumours of GastroEnteric or Pancreatic Origin

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04919226
Acronym
COMPOSE
Enrollment
259
Registered
2021-06-09
Start date
2021-12-21
Completion date
2027-09-30
Last updated
2025-09-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neuroendocrine Tumors

Keywords

GastroEnteroPancreatic, non-functional and functional GastroEnteroPancreatic NeuroEndocrine Tumors (GEP-NET)

Brief summary

The purpose of the study is to evaluate the efficacy, safety & patient-reported outcomes of peptide receptor radionuclide therapy (PRRT) with 177Lu-Edotreotide as 1st or 2nd line of treatment compared to best standard of care in patients with well-differentiated aggressive grade 2 and grade 3, somatostatin receptor-positive (SSTR+), neuroendocrine tumours of gastroenteric or pancreatic origin.

Interventions

DRUG177Lu-Edotreotide (Peptide Receptor Radionuclide Therapy) PRRT

Peptide Receptor Radionuclide Therapy (PRRT) using 177Lu-edotreotide with a defined number of cycles will be administered.

DRUGCAPTEM (Capecitabine and Temozolomide)

Best standard of care treatment (investigator's choice \[from the protocol comparator list\]) according to individual risk-benefit assessment, institutional protocols, the local Prescribing Information, local regulations, or the local guidelines.

The Amino-Acid Solution (AAS) to be used in this study will contain a mixture of lysine and arginine diluted in an electrolyte solution.

DRUGEverolimus

Best standard of care treatment (investigator's choice \[from the protocol comparator list\]) according to individual risk-benefit assessment, institutional protocols, the local Prescribing Information, local regulations, or the local guidelines.

Best standard of care treatment (investigator's choice \[from the protocol comparator list\]) according to individual risk-benefit assessment, institutional protocols, the local Prescribing Information, local regulations, or the local guidelines.

Sponsors

ITM Solucin GmbH
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients aged ≥ 18 years. * Histologically confirmed diagnosis of unresectable, well-differentiated GastroEnteroPancreatic NeuroEndocrine Tumors (GEP-NETs). measurable site of disease per RECIST v1.1 (Response evaluation criteria in solid tumors) using contrast computed tomography (CT) / magnetic resonance imaging (MRI). * Somatostatin receptor-positive (SSTR+) disease.

Exclusion criteria

* Known hypersensitivity to Lutetium 177Lu, edotreotide, DOTA (dodecane tetraacetic acid), any of the comparators, or any excipient or derivative (e.g. rapamycin). * Prior (Peptide Receptor Radionuclide Therapy) PRRT. * Any major surgery within 4 weeks prior to randomization in the trial. * Therapy with an investigational compound and/or medical device within 30 days or 7 half-life periods (whichever is longer) prior to randomization. * Other known malignancies. * Serious non-malignant disease. * Renal, hepatic, cardiovascular, or hematological organ dysfunction, potentially interfering with the safety of the trial treatments. * Pregnant or breastfeeding women. * Patients not able to declare meaningful informed consent on their own or any other vulnerable population to that.

Design outcomes

Primary

MeasureTime frameDescription
Progression-Free SurvivalEvery 12 weeks from randomization until disease progression or death whichever occurs earlier, during the time necessary to observe 148 Progression Free Survival (PFS) events.PFS (Progression-Free Survival), defined as the time from randomization until documented RECIST v1.1 (Response evaluation criteria in solid tumors) progression or death, whichever occurs first.

Secondary

MeasureTime frameDescription
Overall SurvivalUp to 3 years after disease progression, or to a maximum of 5 years after randomizationOS (Overall Survival), defined as the time from randomization until death;

Countries

Australia, China, France, Germany, India, Italy, Netherlands, Spain, United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 18, 2026