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177Lu-DTPA-omburtamab

Phase 1

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

177Lu-DTPA-omburtamab development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Nov 2001

177Lu-DTPA-omburtamab target and mechanism

Target class-Mab (Antibody)
ModalityMonoclonal antibody

Also known as 25 mCi 177Lu- DTPA-omburtamab

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment18

FDA Designations

No designations recorded

177Lu-DTPA-omburtamab clinical trials

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 177Lu-DTPA-omburtamab

What is 177Lu-DTPA-omburtamab?

177Lu-DTPA-omburtamab is an investigational monoclonal antibody-based radiopharmaceutical being studied in children and adolescents with brain cancer or cancer that has spread to the central nervous system. It is being developed by Y-mAbs Therapeutics, Inc. (ticker: YMAB) and is currently in Phase 1 clinical development.

What is 177Lu-DTPA-omburtamab used for in recurrent medulloblastoma?

177Lu-DTPA-omburtamab is being studied for recurrent medulloblastoma, as well as refractory medulloblastoma and central nervous system metastases. It is an investigational therapy in Phase 1 testing and has not been established as a treatment for these conditions. The research is enrolling children and adolescents aged 3 years and older.

Who makes 177Lu-DTPA-omburtamab?

177Lu-DTPA-omburtamab is being developed by Y-mAbs Therapeutics, Inc., which trades under the ticker YMAB. The company is sponsoring the Phase 1 study of the agent in pediatric and adolescent patients with brain cancer or cancer that has spread to the central nervous system.

What phase is 177Lu-DTPA-omburtamab in?

177Lu-DTPA-omburtamab is in Phase 1 clinical development. It is an investigational agent and is not approved by the FDA. The single Phase 1 trial is currently recruiting participants, with a planned enrollment of 18 patients, and no trials of this agent have been completed.

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

177Lu-DTPA-omburtamab is being evaluated in one Phase 1 trial, NCT07698899, titled A Study of 177Lu-DTPA-Omburtamab in Children and Adolescents With Brain Cancer or Cancer That Has Spread to the Central Nervous System (CNS). The trial is recruiting in the United States, has a planned enrollment of 18 participants, and is controlled without randomization or double blinding.

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

Yes, 25 mCi 177Lu-DTPA-omburtamab is another name used for 177Lu-DTPA-omburtamab. Both refer to the same investigational monoclonal antibody-based radiopharmaceutical developed by Y-mAbs Therapeutics, Inc. (YMAB) and studied in Phase 1 for recurrent medulloblastoma and central nervous system metastases.