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25 mCi 177Lu- DTPA-omburtamab

Phase 1

Recurrent Medulloblastoma | Monoclonal antibody | Oncology |Y-mAbs Therapeutics, Inc.|Last Updated: Jul 13, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDBiomarker
Total Trials1
Total Enrollment18

FDA Designations

No designations recorded

Clinical trial landscape

25 mCi 177Lu- DTPA-omburtamab · 1 trial · 4 indications

Phase 1 1
NCT07698899A Study of 177Lu-DTPA-Omburtamab in Children and Adolescents With Brain Cancer or Cancer That Has Spread to the Central Nervous System (CNS)Recurrent Medulloblastoma
RECRUITING18 Analytics
PHASE1RECRUITING
A Study of 177Lu-DTPA-Omburtamab in Children and Adolescents With Brain Cancer or Cancer That Has Spread to the Central Nervous System (CNS)
Recurrent MedulloblastomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with toxicities
Up to 2 cycles (each cycle is 28 days)

To determine safety of up to 2 cycles of cRIT with 177Lu-DTPA-omburtamab treatment in pediatric patients graded according to CTCAE version 5

Maximum Tolerated Dose/MTD
Up to 2 cycles (each cycle is 28 days)

To determine the maximum tolerated dose (MTD) and/or the recommended Phase 2 dose (RP2D) of a single injection of cRIT with 177Lu-DTPA-omburtamab in pediatric patients.

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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose Level 1: 25 mCiEXPERIMENTAL25 mCi 177Lu- DTPA-omburtamab
Dose Level 2: 50 mCiEXPERIMENTAL50 mCi 177Lu- DTPA-omburtamab
Dose Level 3: 75 mCiEXPERIMENTAL75 mCi 177Lu- DTPA-omburtamab
Dose Level 4: 100 mCiEXPERIMENTAL100 mCi 177Lu- DTPA-omburtamab

Interventions

NameTypeDescription
25 mCi 177Lu- DTPA-omburtamabBIOLOGICALThe dose of DTPA-omburtamab will be decided by the dose escalation design
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Eligibility Criteria

Age Range3 Years to 22 Years
SexALL
Healthy VolunteersNo
Study Sites7

Inclusion Criteria: \- Disease type: * Histologically confirmed diagnosis of a tumor that is known to express B7-H3 including but not limited to neuroblastoma, medulloblastoma, rhabdoid tumors, pineoblastoma, retinoblastoma, CNS embryonal tumor, rhabdomyosarcoma, Ewing's sarcoma and ependymoma. ...

Countries:United States
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Frequently asked questions about 25 mCi 177Lu- DTPA-omburtamab

What is 25 mCi 177Lu-DTPA-omburtamab used for?

25 mCi 177Lu-DTPA-omburtamab is an investigational monoclonal antibody being studied for the treatment of recurrent medulloblastoma, a type of brain cancer, in children and adolescents. It is also being evaluated for cancer that has spread to the central nervous system, including refractory medulloblastoma and CNS metastases.

What does 25 mCi 177Lu-DTPA-omburtamab target?

25 mCi 177Lu-DTPA-omburtamab is a radiolabeled monoclonal antibody that delivers the radioactive isotope lutetium-177 to cancer cells. It is designed to bind to a target on tumor cells, allowing targeted delivery of radiation to treat recurrent medulloblastoma and CNS metastases.

Who is developing 25 mCi 177Lu-DTPA-omburtamab?

25 mCi 177Lu-DTPA-omburtamab is being developed by Y-mAbs Therapeutics, Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol YMAB. The company is conducting clinical trials to evaluate the drug in pediatric patients with brain cancer.

What phase is 25 mCi 177Lu-DTPA-omburtamab in?

25 mCi 177Lu-DTPA-omburtamab is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA. The ongoing Phase 1 trial is recruiting patients to evaluate the safety and dosing of the drug in children and adolescents.

What clinical trials is 25 mCi 177Lu-DTPA-omburtamab in?

25 mCi 177Lu-DTPA-omburtamab is being studied in a Phase 1 clinical trial registered as NCT07698899. The trial, titled 'A Study of 177Lu-DTPA-Omburtamab in Children and Adolescents With Brain Cancer or Cancer That Has Spread to the Central Nervous System,' is recruiting 18 participants in the United States.

Is 25 mCi 177Lu-DTPA-omburtamab the same as omburtamab?

25 mCi 177Lu-DTPA-omburtamab is a radiolabeled form of omburtamab, where the antibody is conjugated to the radioactive isotope lutetium-177. This formulation is being studied specifically for delivering targeted radiation to recurrent medulloblastoma and CNS metastases in pediatric patients.