Clinical trial Recruiting at 1 site Observational Ages 18 and up

Peptide receptor radionuclide therapy for gastroenteropancreatic neuroendocrine tumors

Official title: Peptide Receptor Radionuclide Therapy (PRRT) for the Treatment of Neuroendocrine

Run by Methodist Health System · NCT04090034 · Data updated 2026-11-12

This study will collect information to see how well peptide receptor radionuclide therapy (PRRT) works and how safe it is for adults with gastroenteropancreatic neuroendocrine tumors.

More Neuroendocrine Tumors trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment50 (estimated)
SponsorMethodist Health System
Academic / other
Locations2 sites (Dallas, Texas and 1 other locations)
StatusRecruiting
StartedMarch 28, 2024
Main results expectedJune 28, 2026
Study endsJune 28, 2026
Registry record updatedMarch 20, 2026
Trial IDNCT04090034 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18 years) with gastroenteropancreatic primary NETs that are inoperable or metastatic, somatostatin-receptor–positive on Ga-68 DOTATATE, well differentiated (Ki-67 <20%), with documented progression on octreotide and adequate organ function are ideal candidates.

Probably not a fit

Patients with poorly differentiated or high‑grade tumors (Ki‑67 ≥20%), lack of somatostatin receptor uptake, significant organ dysfunction, or who do not receive PRRT are unlikely to benefit from the data produced by this observational cohort.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study will prospectively collect clinical data from adults with gastroenteropancreatic neuroendocrine tumors who are treated with PRRT at Methodist Health System. Investigators will record patient characteristics, imaging findings (including Ga-68 DOTATATE and FDG PET/CT with Krenning scores), laboratory values, treatment responses using RECIST 1.1, survival outcomes, and adverse events. Eligible patients are typically somatostatin-receptor–positive, well-differentiated tumors with Ki-67 <20% and documented progression on somatostatin analogues, and they will be followed for response and toxicity after PRRT. The study aggregates real-world outcomes without randomization to better define patterns of benefit and complications.

Why it matters

Potential benefit: If successful, the data could help doctors identify which patients benefit most from PRRT and improve treatment planning and follow-up.

How similar studies have gone: Randomized and large-scale studies (for example NETTER‑1) and multiple retrospective series have demonstrated clinical benefit of PRRT in somatostatin-receptor–positive NETs, though prospective series focusing on gastroenteropancreatic primaries remain relatively limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. \> 18 years of age
2. Diagnosed with gastroenteropancreatic primary NET and has consented to undergo PRRT per the treating physician. Specifically:

   * Will consider other primaries on a case by case basis if dotatate scan (+) and meet all other criteria.
   * Metastatic or Locally Advanced AND Inoperable
   * Clear disease progression on Octreotide over less than 3 years (RECIST 1.1)
   * Presence of disease within 24 weeks as identified by PET/CT scans with Ga-68 DOTATATE reporting the Krenning score for low-grade NET and/or PET/CT scans with FDG for transformation to high-grade NET
   * Well differentiated on path - Ki67 \< 20%
   * Octreotide positive on pathology (if not documented, acceptable if PET/CT imaging shows lesions with Ga-68 DOTATATE uptakeLabs:

     * Cr. \<1.7
     * Hgb \>8
     * WBC \>2K
     * Plt \>75K
     * Bili \< 3x normal limit
   * No Octreotide within 30 days of administration.
3. Willing and able to comply with the protocol requirements
4. Able to comprehend and sign the Informed Consent Form in English.

Exclusion Criteria:

* Do not meet the Study Inclusion Criteria laid out in section 6.3

Where it's running

  • Clinical Research Institute at Methodist Health System
    Dallas, Texas, United States
    Recruiting
  • Methodist Dallas Medical Center
    Dallas, Texas, United States
    Enrolling by invitation

Study contacts

  • Principal investigator: Alejandro Mejia, MD — Liver Institute at Methodist Dallas Medical Center
  • Study coordinator: Colette N Ndjom, MS
  • Email: clinicalresearch@mhd.com
  • Phone: 214-947-1280

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.