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Hypofractionated Radiation in Combination With B7-H3-CAR T Cells for Pediatric Patients With Relapsed/Refractory Sarcomas
NCT07222735 · View on ClinicalTrials.gov ↗
Study Summary
RAD3CAR is a phase I study designed to evaluatethe safety of B7-H3-CAR T cells and lymphodepletion in combination with hypofractionated radiation therapy. Primary objective: \- To evaluate the safety of B7-H3-CAR T cell therapy after priming with hypofractionated radiation therapy (HFRT) and lymphodepleting chemotherapy in patients ≤ 21 years of age with relapsed/refractory B7-H3+ sarcomas. Secondary objectives: * To describe the antitumor activity of B7-H3-CAR T cells in combination with HFRT * To determine if B7-H3-CAR T cells traffic to tumor sites after combination treatment with HFRT
Conditions Studied
Interventions
- DRUG Cyclophosphamide
- DRUG Fludarabine
- RADIATION Radiation Therapy
- DRUG B7-H3-CAR T Cells
Study Locations (1)
Tennessee
- St. Jude Children's Research Hospital — Memphis
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 42 participants |
| Start Date | 2026-01-21 |
| Est. Completion | 2031-11-05 |
| Phase | Phase 1 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT07222735
The ClinicalTrials.gov registry entry for NCT07222735 describes a study currently listed as recruiting. It is categorized as Phase 1, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 42 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is St. Jude Children's Research Hospital, which has 441 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 5 conditions, with Sarcoma appearing as the primary indexed condition, and to 4 interventions — of which Cyclophosphamide is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT07222735 reports 1 study location spanning 1 distinct geographic area — top geographies include Tennessee. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT07222735 about?
NCT07222735 is a clinical study titled "Hypofractionated Radiation in Combination With B7-H3-CAR T Cells for Pediatric Patients With Relapsed/Refractory Sarcomas". RAD3CAR is a phase I study designed to evaluatethe safety of B7-H3-CAR T cells and lymphodepletion in combination with hypofractionated radiation therapy. Primary objective: \- To evaluate the safety of B7-H3-CAR T cell therapy after priming with hypofractionated radiation therapy (HFRT) and lymph...
What is the current status of trial NCT07222735?
This trial is currently recruiting. It is a Phase 1 study. The enrollment target is 42 participants. The study started on 2026-01-21. Estimated completion is 2031-11-05.
What conditions does trial NCT07222735 study?
This clinical trial studies the following conditions: Sarcoma, Ewing Sarcoma, Childhood Soft Tissue Sarcoma, Childhood Rhabdomyosarcoma, Childhood Osteosarcoma. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT07222735?
The interventions under investigation include: Cyclophosphamide (DRUG), Fludarabine (DRUG), Radiation Therapy (RADIATION), B7-H3-CAR T Cells (DRUG). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT07222735?
This trial is sponsored by St. Jude Children's Research Hospital, which has 441 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT07222735 being conducted?
This trial has 1 study location across Tennessee. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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