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Updated May 2026 · ClinicalTrials.gov

RECRUITINGPhase 1INTERVENTIONAL

Phase I Trial to Determine the Dose and Evaluate the PK and Safety of Lutetium Lu 177 Edotreotide Therapy in Pediatric Participants With SSTR-positive Tumors

A Multicenter, Open-label, Interventional Phase I Trial to Determine the Dose and Evaluate the Pharmacokinetics (PK) and Safety of Lutetium Lu 177 Edotreotide Targeted Radiopharmaceutical Therapy (RPT) as Monotherapy or Following Standard of Care (SoC) for the Treatment of Somatostatin Receptor-positive Tumors in the Pediatric Population (KinLET).

Phase I Trial to Determine the Dose and Evaluate the PK and Safety of Lutetium Lu 177 Edotreotide Therapy in Pediatric Participants With SSTR-positive Tumors (NCT06441331) is a Phase 1 interventional studying Somatostatin Receptor Positive and NETs, sponsored by ITM Solucin GmbH. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

Important: This information is not medical advice. Talk to your doctor about whether a clinical trial is right for you.

About This Trial

The purpose of the study is to determine the appropriate pediatric dosage and evaluate the pharmacokinetics (PK) and safety of Lutetium Lu 177 Edotreotide Targeted Radiopharmaceutical Therapy (RPT) as a monotherapy or following standard of care (SoC) in participants ≥2 to \<18 years of age with somatostatin receptor (SSTR)-positive tumors.

What Stage of Research Is This?

Phase 1 trials test a new treatment for the first time in humans, focusing on safety, dosing, and how the body processes the drug. For Somatostatin Receptor Positive, a Phase 1 study typically enrolls a small number of participants — often healthy volunteers or patients who have exhausted standard treatment options. Phase 1 results determine whether a treatment moves into larger Phase 2 efficacy studies.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

With a target enrollment of 20 participants, this is a small study — typical of early-phase research, rare-disease trials, or pilot studies designed to generate preliminary signal before a larger study is launched.

Who May Be Eligible (Plain English)

Key Who May Qualify: - Participants aged ≥ 2 years and \< 18 years - Confirmed diagnosis somatostatin receptor-positive (SSTR-positive) disease. - Tumor which is relapsed or is refractory to at least one line of previous therapy - Positive SSTR protein expression confirmed by immunohistochemistry of a tumor histology sample - Radioactivity uptake within the primary tumor or metastatic tumor sites measured by locally available SRIs ( 111In-based, 99mTc-based, or 68Ga-based SSTR single-photon emission computed tomography (SPECT)/ computed tomography (CT) or positron emission tomography (PET)/CT imaging, which is higher than the liver uptake) - Participants must have recovered from the acute treatment related toxicities (defined as ≤ grade 1 if not defined in eligibility criteria, excluding alopecia, stable treated electrolyte abnormalities on replacement and stable treated hypothyroidism) of all prior treatment modality prior to entering this trial - In case of sequential treatment followed by SoC or prior therapy, waiting period after previous treatment applies before starting targeted RPT Screening Consent Participant/legal guardian is willing to sign a screening consent. The screening consent is to be obtained according to institutional guidelines. Assent, when appropriate, will be obtained according to institutional guidelines. Key Who Should NOT Join This Trial: - Known hypersensitivity to Lutetium Lu 177 Edotreotide, DOTA/Edotreotide, or excipients - Previous history of acute leukemia unless in remission for at least two years - Extensive bone/bone marrow involvement as per Investigator's judgement unless peripheral blood stem cells (PBSC) are available at a minimum of 2.5x106 CD34+ cells/kg - Patients who have received previous systemic targeted RPT - Previous treatment with metaiodobenzyl guanidine (MIBG) if the predicted overall exposure is expected to exceed 2 Gy (gray) to the bone marrow or 23 Gy to the kidney. ...See full criteria on ClinicalTrials.gov Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language
Key Inclusion Criteria: * Participants aged ≥ 2 years and \< 18 years * Confirmed diagnosis somatostatin receptor-positive (SSTR-positive) disease. * Tumor which is relapsed or is refractory to at least one line of previous therapy * Positive SSTR protein expression confirmed by immunohistochemistry of a tumor histology sample * Radioactivity uptake within the primary tumor or metastatic tumor sites measured by locally available SRIs ( 111In-based, 99mTc-based, or 68Ga-based SSTR single-photon emission computed tomography (SPECT)/ computed tomography (CT) or positron emission tomography (PET)/CT imaging, which is higher than the liver uptake) * Participants must have recovered from the acute treatment related toxicities (defined as ≤ grade 1 if not defined in eligibility criteria, excluding alopecia, stable treated electrolyte abnormalities on replacement and stable treated hypothyroidism) of all prior treatment modality prior to entering this trial * In case of sequential treatment followed by SoC or prior therapy, washout period applies before starting targeted RPT Screening Consent Participant/legal guardian is willing to sign a screening consent. The screening consent is to be obtained according to institutional guidelines. Assent, when appropriate, will be obtained according to institutional guidelines. Key Exclusion Criteria: * Known hypersensitivity to Lutetium Lu 177 Edotreotide, DOTA/Edotreotide, or excipients * Previous history of acute leukemia unless in remission for at least two years * Extensive bone/bone marrow involvement as per Investigator's judgement unless peripheral blood stem cells (PBSC) are available at a minimum of 2.5x106 CD34+ cells/kg * Patients who have received previous systemic targeted RPT * Previous treatment with metaiodobenzyl guanidine (MIBG) if the predicted overall exposure is expected to exceed 2 Gy (gray) to the bone marrow or 23 Gy to the kidney. * Previous treatment with external beam radiation therapy (EBRT) if the predicted overall exposure is expected to exceed more than 2 Gy to the bone marrow or 23 Gy to the kidney. * Previous treatment with oncologic immune vaccine or CAR-T cell therapy * Bulky disease in the CNS * Presence of severe renal, hepatic, electrolyte, cardiovascular, or hematological dysfunction * Participants who have received a live-attenuated vaccine up to four weeks prior to enrolment * Pregnant or breastfeeding women. * Other known malignancies. * Serious non-malignant disease.

Treatments Being Tested

DRUG

Lutetium Lu 177-Edotreotide

lutetium Lu 177 edotreotide At least two cycles and a maximum of six cycles at eight-week (± 2 we-ek) intervals. Extrapolation from standard maximum adult dose of 100 Megabecquerel(MBq)/kg for a 75 kg adult for the first cohort. Dosing decision for the subsequent cohorts by Data Monitoring Committee (DMC), based on (at least) cycle 1 dosimetry and safety data from at least four participants of the preceding cohort. Route of administration: Intravenous (IV) infusion. Duration of treatment: 16-48 weeks

OTHER

Amino Acid Solution

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

Locations (5)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

The Children's Hospital of Philadelphia (CHOP)
Philadelphia, Pennsylvania, United States
University of Texas - MD Anderson Cancer Center
Houston, Texas, United States
Gustave Roussy Cancer Campus
Villejuif, France
Hospital Universitario Vall d'Hebron - Oncología Médica
Barcelona, Spain
Hospital General Universitario Gregorio Marañón
Madrid, Spain

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT06441331), the sponsor (ITM Solucin GmbH), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT06441331 clinical trial studying?

The purpose of the study is to determine the appropriate pediatric dosage and evaluate the pharmacokinetics (PK) and safety of Lutetium Lu 177 Edotreotide Targeted Radiopharmaceutical Therapy (RPT) as a monotherapy or following standard of care (SoC) in participants ≥2 to \<18 years of age with somatostatin receptor (SSTR)-positive tumors. The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT06441331?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT06441331?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT06441331. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT06441331. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.