Peptide Receptor Radionuclide Therapy With 177Lu-Dotatate Associated With Metronomic Capecitabine In Patients Affected By Aggressive Gastro-Etero-Pancreatic Neuroendocrine Tumors

NCT ID: NCT02736500

Last Updated: 2025-01-13

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1/PHASE2
• Total Enrollment: 39 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2015-09-02
• Study Completion Date: 2019-10-22

Brief Summary

The aim of this phase I-II study is to evaluate the efficacy and toxicity of PRRT with 177Lu-DOTATATE (Lu-PRRT) associated to metronomic chemotherapy with Capecitabine in patients affected by aggressive FDG-positive gastro-entero-pancreatic NET. Moreover to analyze the effects of the capecitabine metronomic schedule on the level of circulating angiogenetic factors.

Detailed Description

Neuroendocrine tumors (NETs) are relatively rare tumors, mainly originating from the digestive system, able to produce bioactive amines and hormones. NETs tend to be slow growing and are often diagnosed when metastatic. Treatment is multidisciplinary and should be individualized according to the tumor type, burden, and symptoms. Therapeutic tools include surgery, interventional radiology, and medical treatments such as somatostatin analogues, interferon, chemotherapy, new targeted drugs (everolimus, sunitinib) with radiolabelled somatostatin analogues. Despite the options available, antiproliferative treatment options for patients with inoperable gastro-entero-pancreatic (GEP) NETs are limited.

PRRT with radiolabelled somatostatin analogues 90Y-DOTATOC, and 177Lu-DOTATATE (177Lu-DOTA-D-Phe1-Tyr3-octreotate), has been experimented for more then 15 years in few centers. The introduction of PRRT and, particularly, the advent of 177Lu-DOTATATE, broke through the poor scenario of available treatment for NETs.

Dosimetric studies demonstrated that 90Y-DOTATOC and 177Lu-DOTATATE are able to deliver high radiation doses to somatostatin receptor sst2-expressing tumors and low doses to normal organs. Clinical studies demonstrated that partial and complete objective responses in up to 30% of patients can be obtained, with a great survival benefit including those with stable disease. Side effects may involve the kidney and the bone marrow and are usually mild. Renal protection is used to minimize the risk of a late decrease of renal function.

Recently, in order to further increase the objective response to PRRT, a combined treatment with the radiosensitizer capecitabine, has been proposed and tested on GEP-NET patients' population. Capecitabine is the oral prodrug of 5-fluorouracile (5-FU), which is active in GEP tumors and a radiosensitizer itself. The finding that neo-angiogenesis can be shut down also with cytotoxic drugs like capecitabine when administered in low and frequent doses, constitutes the rationale for proposing a particular schedule of chemotherapy that is, therefore, named "metronomic" or "anti-angiogenic".

Based on the reported experience, the investigators think to offer a combined therapy in aggressive, metabolically active tumors, such as those patients with a positive FDG scan. FDG-PET allow the investigators to obtain in vivo imaging of increased glycolysis which is known to be an hallmark of tumor aggressiveness.

The aim of this phase I-II study is to evaluate the efficacy and toxicity of PRRT with 177Lu-DOTATATE (Lu-PRRT) associated to metronomic chemotherapy with Capecitabine in patients affected by aggressive FDG-positive gastro-entero-pancreatic NET. Moreover to analyze the effects of the capecitabine metronomic schedule on the level of circulating angiogenetic factors.

Conditions

Neuroendocrine Tumors; Gastro Entero Pancreatic Neuroendocrine Tumors

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

28 GBq 177Lu-DOTATATE

5 cycles of 5.5 GBq (150 mCi) each, up to the total cumulative activity of 28 GBq (750 mCi) 177Lu-DOTATATE

Group Type: EXPERIMENTAL

28 GBq 177Lu-DOTATATE

Intervention Type: DRUG

Patients without risk factors (particularly long standing and poorly controlled diabetes and hypertension) for late renal toxicity will be administered with 5 cycles of 5.5 GBq (150 mCi) each, up to the total cumulative activity of 28 GBq (750 mCi) of 177Lu-DOTATATE.

22 GBq 177Lu-DOTATATE

6 cycles of 3.7 GBq (100 mCi) each, up to the total cumulative activity of 22 GBq (600 mCi) 177Lu-DOTATATE

Group Type: EXPERIMENTAL

22 GBq 177Lu-DOTATATE

Intervention Type: DRUG

Patients with risk factors for late renal toxicity will be administered with 6 cycles of 3.7 GBq (100 mCi) each, up to the total cumulative activity of 22 GBq (600 mCi)177Lu-DOTATATE

Interventions

28 GBq 177Lu-DOTATATE

Patients without risk factors (particularly long standing and poorly controlled diabetes and hypertension) for late renal toxicity will be administered with 5 cycles of 5.5 GBq (150 mCi) each, up to the total cumulative activity of 28 GBq (750 mCi) of 177Lu-DOTATATE.

Intervention Type: DRUG

22 GBq 177Lu-DOTATATE

Patients with risk factors for late renal toxicity will be administered with 6 cycles of 3.7 GBq (100 mCi) each, up to the total cumulative activity of 22 GBq (600 mCi)177Lu-DOTATATE

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Histopathologic diagnosis of inoperable or metastatic gastro-entero-pancreatic neuroendocrine neoplasia.
• Conserved hematological, liver and renal parameters: haemoglobin >= 10 g/dL, absolute neutrophil count (ANC) >= 1.5 x 109 /L, platelets >= 100 x 109 /L, bilirubin ≤1.5 X UNL (upper normal limit), ALT <2.5 X UNL (< 5 X UNL in presence of liver metastases), creatinine < 2 mg/dL.
• Age more than 18 years.
• Patients with documented disease will be admitted to therapeutic phase only if the diagnostic receptor imaging (OctreoScan) demonstrate a significant uptake in the tumor (grade 2 or 3, according to a preset scoring, where grade 1= equal to normal liver, grade2 = higher than normal liver, grade 3= higher than kidneys and spleen), that may allow delivering a low absorbed dose to normal organs and a high dose to the tumor.
• Patients with documented disease will be admitted to therapeutic phase only if the 18FDG PET/CT is positive with a SUV > 2.5 at least in one documented lesion.
• Disease must be measurable by means of conventional imaging (CT or MRI).
• Before treatment clinical history data will be collected, physical examination will be performed and diagnostic and laboratory data will be examined.
• Patients must not receive other treatments (e.g. chemo- or radiotherapy) from one month before to two months after the completion of 177Lu-DOTATATE cycles.
• Patients must be naive from previous radionuclide treatments with radiopeptides (e.g. 111Inpentetreotide, 90Y-DOTATOC) or other radiopharmaceuticals (e.s. 131I-MIBG, 131I).

Exclusion Criteria

• Pregnancy/breastfeeding (a pregnancy test not older than 7 days is mandatory).
• Assessed bone marrow invasion > 25%.
• Other concomitant neoplasm (excluding in situ basaliomas and radically treated cervical cancers).
• ECOG score higher than 2.
• Expectancy of life shorter than 6 months.
• Patients with psycho-physical conditions that are not suitable for entering this clinical study and fulfilling its requirements.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Istituto Europeo di Oncologia

OTHER

Sponsor Role: collaborator

Istituto Romagnolo per lo Studio dei Tumori Dino Amadori IRST S.r.l. IRCCS

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Giovanni Paganelli, MD

Role: PRINCIPAL_INVESTIGATOR

IRST IRCCS, Meldola (FC)

Locations

Giovanni Paganelli

Meldola, FC, Italy

Lisa Bodei

Milan, , Italy

Countries

Italy

Other Identifiers

IRST100.19

Identifier Type: -

Identifier Source: org_study_id