Surgical Debulking Prior to Peptide Receptor Radionuclide Therapy in Well Differentiated Gastroenteropancreatic Neuroendocrine Tumors

Recruiting now · Phase 4

Conditions studied: Digestive System Neuroendocrine Tumor G1, Digestive System Neuroendocrine Tumor G2, Metastatic Digestive System Neuroendocrine Neoplasm, Metastatic Malignant Neoplasm in the Liver, Pancreatic Neuroendocrine Tumor G1, Pancreatic Neuroendocrine Tumor G2

In brief

This phase IV trial evaluates how well giving standard of care (SOC) peptide receptor radionuclide therapy (PRRT) after SOC surgical removal of as much tumor as possible (debulking surgery) works in treating patients with grade 1 or 2, somatostatin receptor (SSTR) positive, gastroenteropancreatic neuroendocrine tumors (GEP-NETs) that have spread from where they first started (primary site) to the liver (hepatic metastasis). Lutetium Lu 177 dotatate is a radioactive drug that uses targeted radiation to kill tumor cells. Lutetium Lu 177 dotatate includes a radioactive form (an isotope) of the element called lutetium. This radioactive isotope (Lu-177) is attached to a molecule called dotatate. On the surface of GEP-NET tumor cells, a receptor called a somatostatin receptor binds to dotatate. When this binding occurs, the lutetium Lu 177 dotatate drug then enters somatostatin receptor-positive tumor cells, and radiation emitted by Lu-177 helps kill the cells. Giving lutetium Lu 177 dotatate after surgical debulking may better treat patients with grade 1/2 GEP-NETs

Key facts

Study ID: NCT06016855
Run by: Vanderbilt-Ingram Cancer Center
People needed: 6
Starts: 2024-05-31
Expected to finish: 2028-05-28
Last updated by the study team: 2026-06-24

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

Signed and dated written informed consent
Male or female >= 18 years of age on the day of signing informed consent
Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1 or 2
Histologically confirmed well-differentiated gastrointestinal or pancreatic neuroendocrine tumor that is grade 1 or grade 2 (Ki-67 =< 20%)
Somatostatin receptor avidity of known or suspected neuroendocrine tumor (NET) lesion(s) assessed by a baseline copper-64 dotatate PET/CT scan performed within 6 months (180 days) prior to surgical debulking on study day 0. The somatostatin receptor avidity of the majority of suspected NET lesion(s) must be >= normal liver uptake
Patient must have hepatic metastasis or hepatic metastases. Provided required hepatic metastatic disease is present, patient can also have any other site or sites of metastatic disease
White blood cell count (WBC) >= 2000/uL (resulted =< 90 days prior to surgical debulking on day 0 of participation in this study)
Platelets >= 75,000/uL (resulted =< 90 days prior to surgical debulking on day 0 of participation in this study)
Hemoglobin >= 8.0 g/dL (resulted =< 90 days prior to surgical debulking on day 0 of participation in this study)
Creatinine clearance (CrCl) >= 30 mL/minute (as calculated by the Cockcroft-Gault Formula with estimated creatinine clearance rate [eCCR] >= 30 mL/min required for eligibility inclusion; or calculated/measured by an alternative established institutional standard consistently applied across participants at the site) (resulted =< 90 days prior to surgical debulking on day 0 of participation in this study)
Total bilirubin =< 3.0 times institutional upper limit of normal (ULN) (resulted =< 90 days prior to surgical debulking on day 0 of participation in this study)
Serum albumin >= 3.0 g/dL unless the prothrombin time is within normal range (resulted =< 90 days prior to surgical debulking on day 0 of participation in this study)
Women must not be breastfeeding and further agree to not breastfeed during treatment with lutetium Lu 177 dotatate; and for at least 2.5 months after patient's final dose of lutetium Lu 177 dotatate
A woman of childbearing potential (WOCBP) - must have a negative serum or urine pregnancy test resulted within 28 days prior to initiation of first dose of lutetium Lu 177 dotatate on cycle 1, day 1; and must agree to follow instructions for using acceptable contraception from the time of signing consent, and until 7 months after her final dose of lutetium Lu 177 dotatate
A man able to father children who is sexually active with a WOCBP must agree to follow instructions for using acceptable contraception, from the time of signing consent, and until 4 months after his final dose of lutetium Lu 177 dotatate

You may not qualify if…

Patient has any tumor > 3 cm deemed to be inoperable
Patient has disease which is considered to be completely surgically resectable
Patient has grade 3 neuroendocrine neoplasm (well-differentiated or poorly-differentiated tumor)
Prior receipt of peptide receptor radionuclide therapy (PRRT)
Patient possesses untreated or growing brain metastases (growth within 90 days prior to surgical debulking on day 0 of participation in this study)
Unstable angina, congestive heart failure with New York Heart Association (NYHA) functional classification III or IV, or uncontrolled symptomatic cardiac arrythmia
Any other significant medical, psychiatric, or surgical condition, currently uncontrolled by treatment, which in the judgment of the patient's study physician may reasonably be expected to interfere with patient's completion of the study

Where it is running

Vanderbilt University/Ingram Cancer Center — Nashville, Tennessee, United States (enrolling)

Full record on ClinicalTrials.gov

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