Neuroendocrine TumorsPhase 1NCT05249114
Study of Cabozantinib With Lu-177 in Patients With Somatostatin Receptor 2 Positive Neuroendocrine Tumors
A Phase 1 study testing Cabozantinib and Lu-177 in people with Neuroendocrine Tumors, run by Providence Health & Services at 1 site in United States.
Trial summary
The phase I objective of this study is to establish the maximal tolerated dose (MTD) of cabozantinib in 20 mg, 40 mg and 60 mg dose escalation cohorts in combination with Lu-177 dotatate at a standard dose of 7.4 GBq in four (4) 8-week cycles followed by continuation cabozantinib. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Neuroendocrine Tumors
- What is being tested?
- Cabozantinib and Lu-177
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 6 participants
- Where
- 1 siteUnited States
- Study dates
- 28 Dec 2022to Dec 2029
- Phase
- Phase 1
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients with unresectable, progressive, histologically well-differentiated neuroendocrine tumors of the fore-, mid-, or hindgut, including pancreas, or those with an unknown primary with target lesions overexpressing somatostatin receptors (Krenning 2, 3 or 4) on a SSTR PET.
- Patients must have previously received one or more lines of systemic therapy including somatostatin analogue therapy.
- Prior PRRT therapy is permitted up to a maximum of 4 standard doses. Enrollment of R-PRRT patients is permitted after initially 3 PRRT-naïve patients have been enrolled on protocol and if the minimum progression free survival (PFS) with initial PRRT therapy was ≥ 18 months from day 1, cycle 1 of PRRT to progression.
- ECOG 0-2.
- Recovery to baseline or ≤ Grade 1 (CTCAE v5.0) from toxicities related to any prior treatments, unless AE(s) are clinically nonsignificant and/or stable on supportive therapy.
- Minimum 18 years or older.
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- Adequate organ and marrow function, based upon meeting all of the following laboratory criteria within 14 days before first dose of study treatment:
- Absolute neutrophil count (ANC) ≥ 1500/µL without granulocyte colony-stimulating factor support.
- White blood cell count ≥ 2500/µL.
- Platelets ≥ 100,000/µL without transfusion.
- Hemoglobin ≥ 9 g/dL (≥ 90 g/L).
- Alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) ≤ 3 x upper limit of normal (ULN). ALP ≤ 5 x ULN with documented bone metastases.
- Total bilirubin ≤ 1.5 x ULN (for patients with Gilbert's disease ≤ 3 x ULN).
- Serum albumin ≥ 2.8 g/dl
- (PT)/INR or partial thromboplastin time (PTT) test < 1.3 x the laboratory ULN
- Serum creatinine ≤ 2.0 x ULN or estimated creatinine clearance ≥ 30 mL/min (≥ 0.5 mL/sec) using the Cockcroft-Gault equation:
- Males: (140 - age) x weight (kg)/(serum creatinine [mg/dL] × 72) Females: [(140 - age) x weight (kg)/(serum creatinine [mg/dL] × 72)] × 0.85
- Urine protein/creatinine ratio (UPCR) ≤ 1 mg/mg (≤ 113.2 mg/mmol), or 24-h urine protein ≤ 1 g
- Capable of understanding and complying with the protocol requirements and must have signed the informed consent document.
- Sexually active fertile participants and their partners must agree to use medically accepted methods of contraception (e.g., barrier methods, including male condom, female condom, or diaphragm with spermicidal gel) during the course of the study and for 4 months after the last dose of study treatment.
- Female participants of childbearing potential must not be pregnant at screening. Female participants are considered to be of childbearing potential unless one of the following criteria are met: documented permanent sterilization (hysterectomy, bilateral salpingectomy, or bilateral oophorectomy) or documented postmenopausal status (defined as 12 months of amenorrhea in a woman > 45 years-of-age in the absence of other biological or physiological causes. In addition, females < 55 years-of-age must have a serum follicle stimulating (FSH) level > 40 mIU/mL to confirm menopause). Note: Documentation may include review of medical records, medical examinations, or medical history interview by study site.
Who cannot join
- Prior therapy with cabozantinib.
- Tumors with poorly differentiated or small cell histology.
- Receipt of any type of small molecule kinase inhibitor (including investigational kinase inhibitor) within 2 weeks before first dose of study treatment.
- Receipt of any type of cytotoxic, biologic or other systemic anticancer therapy (including investigational) within 4 weeks before first dose of study treatment.
- Radiation therapy for bone metastasis within 2 weeks or any other radiation therapy within 4 weeks before first dose of study treatment. Systemic treatment with radionuclides within 6 weeks before first dose of study treatment. Participants with clinically relevant ongoing complications from prior radiation therapy are not eligible.
- Known brain metastases or cranial epidural disease unless adequately treated with radiotherapy and/or surgery (including radiosurgery) and stable for at least 4 weeks prior to first dose of study treatment after radiotherapy or at least 4 weeks prior to first dose of study treatment after major surgery (e.g., removal or biopsy of brain metastasis). Participants must have complete wound healing from major surgery or minor surgery before first dose of study treatment. Eligible participants must be neurologically asymptomatic and without corticosteroid treatment at the time of first dose of study treatment.
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- Concomitant anticoagulation with coumarin agents (e.g., warfarin), direct thrombin inhibitors (e.g., dabigatran), direct factor Xa inhibitor betrixaban, or platelet inhibitors (e.g., clopidogrel). Allowed anticoagulants are the following:
- Prophylactic use of low-dose aspirin for cardio-protection (per local applicable guidelines) and low-dose low molecular weight heparins (LMWH).
- Therapeutic doses of LMWH or anticoagulation with direct factor Xa inhibitors rivaroxaban, edoxaban, or apixaban in subjects without known brain metastases who are on a stable dose of the anticoagulant for at least 1 week before first dose of study treatment without clinically significant hemorrhagic complications from the anticoagulation regimen or the tumor.
- The participant has uncontrolled, significant intercurrent or recent illness including, but not limited to, the following conditions:
- Cardiovascular disorders: i. Congestive heart failure New York Heart Association Class 3 or 4, unstable angina pectoris, serious cardiac arrhythmias.
- Uncontrolled hypertension defined as sustained blood pressure (BP) > 140 mm Hg systolic or > 90 mm Hg diastolic despite optimal antihypertensive treatment.
- Stroke (including transient ischemic attack [TIA]), myocardial infarction (MI), or other ischemic event, or thromboembolic event (e.g., deep venous thrombosis, pulmonary embolism) within 6 months before first dose of study treatment.
- Participants with a diagnosis of incidental, subsegmental PE or DVT within 6 months are allowed if stable, asymptomatic, and treated with a stable dose of permitted anticoagulation (see exclusion criterion #6) for at least 1 week before first dose of study treatment.
- Gastrointestinal (GI) disorders including those associated with a high risk of perforation or fistula formation:
- The participant has evidence of tumor invading into the GI tract, active peptic ulcer disease, inflammatory bowel disease (e.g., Crohn's disease), active diverticulitis, cholecystitis, symptomatic cholangitis or appendicitis, acute pancreatitis, acute obstruction of the pancreatic duct or common bile duct, or gastric outlet obstruction.
- Abdominal fistula, GI perforation, bowel obstruction, or intra-abdominal abscess within 6 months before first dose of study treatment.
- Note: Complete healing of an intra-abdominal abscess must be confirmed before first dose of study treatment.
- Clinically significant hematuria, hematemesis, or hemoptysis of > 0.5 teaspoon (2.5 ml) of red blood, or other history of significant bleeding (e.g., pulmonary hemorrhage) within 12 weeks before first dose of study treatment.
- Cavitating pulmonary lesion(s) or known endotracheal or endobronchial disease manifestation.
- Other clinically significant disorders that would preclude safe study participation.
- Serious non-healing wound/ulcer/bone fracture.
- Uncompensated/symptomatic hypothyroidism.
- Moderate to severe hepatic impairment (Child-Pugh B or C).
- Major surgery (e.g., laparoscopic nephrectomy, GI surgery, removal or biopsy of brain metastasis) within 2 weeks before first dose of study treatment. Minor surgeries within 10 days before first dose of study treatment. Participants must have complete wound healing from major surgery or minor surgery before first dose of study treatment. Participants with clinically relevant ongoing complications from prior surgery are not eligible.
- Corrected QT interval calculated by the Fridericia formula (QTcF) > 500 ms per electrocardiogram (ECG) within 14 days before first dose of study treatment [add reference for Fridericia formula].
- Note: If a single ECG shows a QTcF with an absolute value > 500 ms, two additional ECGs at intervals of approximately 3 min must be performed within 30 min after the initial ECG, and the average of these three consecutive results for QTcF will be used to determine eligibility.
- Pregnant or lactating females.
- Inability to swallow tablets.
- Previously identified allergy or hypersensitivity to components of the study treatment formulations.
- Any other active malignancy at time of first dose of study treatment or diagnosis of another malignancy within 3 years prior to first dose of study treatment that requires active treatment, except for locally curable cancers that have been apparently cured, such as basal or squamous cell skin cancer, superficial bladder cancer, or carcinoma in situ of the prostate, cervix, or breast.
Trial locations and contacts
1 site in 1 country.
United States1 site
Providence Portland Cancer Institute - Franz Clinic
Portland, Oregon, 97213
About this study
Official title: Phase Ib Study of Cabozantinib in Combination With Lu-177 DOTATATE Peptide Receptor Radionuclide Therapy (PRRT) in Patients With Progressive, Previously Treated Somatostatin Receptor 2 (SSTR2) Positive Neuroendocrine Tumors (NETs)
The phase I objective of this study is to establish the maximal tolerated dose (MTD) of cabozantinib in 20 mg, 40 mg and 60 mg dose escalation cohorts in combination with Lu-177 dotatate at a standard dose of 7.4 GBq in four (4) 8-week cycles followed by continuation cabozantinib.
Read the detailed description
Patients will be treated four (4) cycles of combination cabozantinib with Lu-177 DOTATATE followed by maintenance cabozantinib. Cycles 1-4 combination cabozantinib with Lu-177 DOTATATE is given in 8-week cycles, with cabozantinib initiated on day 1 and Lu-177 DOTATATE given on day 14. Cabozantinib dosing is escalated during cycles 1-4 in the following manner: dose cohort 1 patients receive cabozantinib 20 mg daily, cohort 2 receive 40mg qod alternating with 20 mg qod, cohort 3 receive 40 mg qd, dose cohort 4 receive 60 mg qod alternating with 40 mg qod, and dose cohort 5 receive 60 mg qd. In all cohorts, during cycle 5 and beyond, single-agent maintenance cabozantinib is given in 4-week cycles in a qd dosing scheduling as follows: 20 mg qd cohort 1; 40 mg qd cohort 2; 40 mg qd cohort 3; 60 mg qd cohort 4; 60 mg qd cohort 5, until disease progression.
- Conditions
- Neuroendocrine Tumors
- Being tested
- Cabozantinib, Lu-177
- Keywords
- Phase 1b, Cabozantinib, Lu-177, Lutathera, SSTR2, Gastrointestinal
- Medical subject headings
- Neuroendocrine Tumors
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CabozantinibDrug
Also called Cabometyx
Cabozantinib tablets are supplied as film coated tablets containing cabozantinib malate equivalent to 20 mg and 60 mg of cabozantinib and contain microcrystalline cellulose, lactose anhydrous, hydoxypropyl cellulose, croscarmellose sodium, colloidal silicon dioxide, magnesium stearate and Opadry yellow. The 60 mg tablets are oval and the 20 mg tablets are round. Doses of 40 mg will comprise two 20-mg tablets.
Lu-177Drug
Also called Lutathera
Currently, the only FDA-approved PRRT consists of dotatate, a somatostatin analogue, radiolabeled with Lutetium-177 (Lu177), a beta-minus emitter (brand name Lutathera). Lu177 induces cell death via DNA strand breaks, caspase-3 apoptosis, and interfering with DNA-PK expression (which is associated with DNA repair). PRRT with Lu-177 DOTATATE is a targeted, intravenous therapy inducing DNA damage by delivering ionizing radiation to somatostatin receptor positive tumors.
| Study group | Role | What they receive |
|---|---|---|
| Cohort 1 | Experimental | Cabozantinib 20 mg daily with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 20 mg qd. Receives: Drug: Cabozantinib; Drug: Lu-177 |
| Cohort 2 | Experimental | Cabozantinib 40 mg qod alternating with 20 mg qod with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 40 mg qd. Receives: Drug: Cabozantinib; Drug: Lu-177 |
| Cohort 3 | Experimental | Cabozantinib 40 mg qd with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 40 mg qd. Receives: Drug: Cabozantinib; Drug: Lu-177 |
| Cohort 4 | Experimental | Cabozantinib 60 mg qod alternating with 40 mg qod with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 60 mg qd. Receives: Drug: Cabozantinib; Drug: Lu-177 |
| Cohort 5 | Experimental | Cabozantinib 60 mg qd with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 60 mg qd until disease progression. Receives: Drug: Cabozantinib; Drug: Lu-177 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Establish the maximal tolerated dose of cabozantinib in combination with Lu-177 dotatae at a standard dose of 7.4 GBg in four 8-week cycles followed by continuation of cabozantinib.
The phase I objective of this study is to establish the maximal tolerated dose (MTD) of cabozantinib in 20 mg, 40 mg and 60 mg dose escalation cohorts in combination with Lu-177 dotatate at a standard dose of 7.4 GBq in four (4) 8-week cycles followed by continuation cabozantinib. Due to overlapping toxicities of cabozantinib and Lu-177 dotatate and to allow more incremental dose escalation of cabozantinib, alternating day dosing of 40mg/20mg and 60mg/40mg cohorts are incorporated into the schema. This is expected to reduce the risk of overlapping toxicities while still achieving radio-sensitizing anti-angiogenic, multi-targeted therapy in combination with the beta-emitting radiation from lutetium 177 synergistic due to the prolonged half-life of cabozantinib.
Measured: Up to 2 years
Secondary outcomes (1)
Establish objective response rate as measured by RECIST 1.1
The secondary outcome measure is to establish the objective response rate (ORR) as measured by Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. Imaging is done every 16 weeks and/or re-staging through study completion up to 2 years. A minimum observed overall response rate (ORR) of ≥ 25% in the PRRT-naïve cohort, as measured by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 in the treatment population would justify further randomized efficacy studies.
Measured: Up to 2 years post study completion
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Feb 2022
- Study start28 Dec 2022
- Primary completionDec 2027 (estimated)
- Study completionDec 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Neuroendocrine TumorsStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 6 participants (actual)
Sponsor and investigators
- Lead sponsor
- Providence Health & Services
- Sponsor type
- University, hospital or other
- Collaborators
- Exelixis, Advanced Accelerator Applications
- Responsible party
- Sponsor
- Investigators
- Hagen Kennecke, MD, Principal investigator, Providence Health & Services
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05249114
- Sponsor's protocol ID
- 2022000050
- Status last verified
- Apr 2026
- First submitted
- 31 Jan 2022
- Last updated
- 13 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase Ib Study of Cabozantinib in Combination With Lu-177 DOTATATE Peptide Receptor Radionuclide Therapy (PRRT) in Patients With Progressive, Previously Treated Somatostatin Receptor 2 (SSTR2) Positive Neuroendocrine Tumors (NETs)
- ClinicalTrials.gov ID
- NCT05249114
- Acronym / sponsor ID
- 2022000050
- Conditions
- Neuroendocrine Tumors
- Keywords
- Phase 1b, Cabozantinib, Lu-177, Lutathera, SSTR2, Gastrointestinal
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 6 participants (actual)
- Lead sponsor
- Providence Health & ServicesUniversity, hospital or other
- Collaborators
- Exelixis, Advanced Accelerator Applications
- Study start
- 28 Dec 2022 (actual)
- Primary completion
- Dec 2027 (estimated)
- Study completion
- Dec 2029 (estimated)
- First posted
- 21 Feb 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The phase I objective of this study is to establish the maximal tolerated dose (MTD) of cabozantinib in 20 mg, 40 mg and 60 mg dose escalation cohorts in combination with Lu-177 dotatate at a standard dose of 7.4 GBq in four (4) 8-week cycles followed by continuation cabozantinib.
Detailed description
Patients will be treated four (4) cycles of combination cabozantinib with Lu-177 DOTATATE followed by maintenance cabozantinib. Cycles 1-4 combination cabozantinib with Lu-177 DOTATATE is given in 8-week cycles, with cabozantinib initiated on day 1 and Lu-177 DOTATATE given on day 14. Cabozantinib dosing is escalated during cycles 1-4 in the following manner: dose cohort 1 patients receive cabozantinib 20 mg daily, cohort 2 receive 40mg qod alternating with 20 mg qod, cohort 3 receive 40 mg qd, dose cohort 4 receive 60 mg qod alternating with 40 mg qod, and dose cohort 5 receive 60 mg qd. In all cohorts, during cycle 5 and beyond, single-agent maintenance cabozantinib is given in 4-week cycles in a qd dosing scheduling as follows: 20 mg qd cohort 1; 40 mg qd cohort 2; 40 mg qd cohort 3; 60 mg qd cohort 4; 60 mg qd cohort 5, until disease progression.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 5
| Arm | Type | Receives |
|---|---|---|
| Cohort 1 | Experimental | Drug: Cabozantinib, Drug: Lu-177Cabozantinib 20 mg daily with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 20 mg qd. |
| Cohort 2 | Experimental | Drug: Cabozantinib, Drug: Lu-177Cabozantinib 40 mg qod alternating with 20 mg qod with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 40 mg qd. |
| Cohort 3 | Experimental | Drug: Cabozantinib, Drug: Lu-177Cabozantinib 40 mg qd with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 40 mg qd. |
| Cohort 4 | Experimental | Drug: Cabozantinib, Drug: Lu-177Cabozantinib 60 mg qod alternating with 40 mg qod with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 60 mg qd. |
| Cohort 5 | Experimental | Drug: Cabozantinib, Drug: Lu-177Cabozantinib 60 mg qd with Lu-177 DOTATE administration IV. For cycles 5+, single-agent maintenance of cabozantinib is given at 60 mg qd until disease progression. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (21 listed)
- Patients with unresectable, progressive, histologically well-differentiated neuroendocrine tumors of the fore-, mid-, or hindgut, including pancreas, or those with an unknown primary with target lesions overexpressing somatostatin receptors (Krenning 2, 3 or 4) on a SSTR PET.
- Patients must have previously received one or more lines of systemic therapy including somatostatin analogue therapy.
- Prior PRRT therapy is permitted up to a maximum of 4 standard doses. Enrollment of R-PRRT patients is permitted after initially 3 PRRT-naïve patients have been enrolled on protocol and if the minimum progression free survival (PFS) with initial PRRT therapy was ≥ 18 months from day 1, cycle 1 of PRRT to progression.
- ECOG 0-2.
- Recovery to baseline or ≤ Grade 1 (CTCAE v5.0) from toxicities related to any prior treatments, unless AE(s) are clinically nonsignificant and/or stable on supportive therapy.
Key exclusion criteria (31 listed)
- Prior therapy with cabozantinib.
- Tumors with poorly differentiated or small cell histology.
- Receipt of any type of small molecule kinase inhibitor (including investigational kinase inhibitor) within 2 weeks before first dose of study treatment.
- Receipt of any type of cytotoxic, biologic or other systemic anticancer therapy (including investigational) within 4 weeks before first dose of study treatment.
- Radiation therapy for bone metastasis within 2 weeks or any other radiation therapy within 4 weeks before first dose of study treatment. Systemic treatment with radionuclides within 6 weeks before first dose of study treatment. Participants with clinically relevant ongoing complications from prior radiation therapy are not eligible.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| CabozantinibAlso: CabometyxCabozantinib tablets are supplied as film coated tablets containing cabozantinib malate equivalent to 20 mg and 60 mg of cabozantinib and contain microcrystalline cellulose, lactose anhydrous, hydoxypropyl cellulose, croscarmellose sodium, colloidal silicon dioxide, magnesium stearate and Opadry yellow. The 60 mg tablets are oval and the 20 mg tablets are round. Doses of 40 mg will comprise two 20-mg tablets. | Drug | Cohort 1, Cohort 2, Cohort 3, Cohort 4, Cohort 5 |
| Lu-177Also: LutatheraCurrently, the only FDA-approved PRRT consists of dotatate, a somatostatin analogue, radiolabeled with Lutetium-177 (Lu177), a beta-minus emitter (brand name Lutathera). Lu177 induces cell death via DNA strand breaks, caspase-3 apoptosis, and interfering with DNA-PK expression (which is associated with DNA repair). PRRT with Lu-177 DOTATATE is a targeted, intravenous therapy inducing DNA damage by delivering ionizing radiation to somatostatin receptor positive tumors. | Drug | Cohort 1, Cohort 2, Cohort 3, Cohort 4, Cohort 5 |
Primary outcome
Establish the maximal tolerated dose of cabozantinib in combination with Lu-177 dotatae at a standard dose of 7.4 GBg in four 8-week cycles followed by continuation of cabozantinib.
Time frame: Up to 2 years
The phase I objective of this study is to establish the maximal tolerated dose (MTD) of cabozantinib in 20 mg, 40 mg and 60 mg dose escalation cohorts in combination with Lu-177 dotatate at a standard dose of 7.4 GBq in four (4) 8-week cycles followed by continuation cabozantinib. Due to overlapping toxicities of cabozantinib and Lu-177 dotatate and to allow more incremental dose escalation of cabozantinib, alternating day dosing of 40mg/20mg and 60mg/40mg cohorts are incorporated into the schema. This is expected to reduce the risk of overlapping toxicities while still achieving radio-sensitizing anti-angiogenic, multi-targeted therapy in combination with the beta-emitting radiation from lutetium 177 synergistic due to the prolonged half-life of cabozantinib.
1 secondary outcome
Establish objective response rate as measured by RECIST 1.1
Time frame: Up to 2 years post study completion
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Apr 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Hagen Kennecke, MD principal investigator
Providence Health & Services
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Cabozantinib and Lu-177 in people with Neuroendocrine Tumors, run by Providence Health & Services at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 21 inclusion and 31 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: under way, not looking for participants, as of the sponsor's last update on 13 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Establish the maximal tolerated dose of cabozantinib in combination with Lu-177 dotatae at a standard dose of 7.4 GBg in four 8-week cycles followed by continuation of cabozantinib. (time frame: Up to 2 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Apr 2026.