A Phase 1 interventional study of Tumor-specific ex vivo expanded autologous lymphocyte transfer (TTRNA-xALT) in Neuroblastoma and Diffuse Intrinsic Pontine Glioma, sponsored by University of Florida. Active, not recruiting at 3 sites in United States. Open to participants aged 1 Year to 30 Years. Per ClinicalTrials.gov, last updated 2026-09-23.
Sponsored by University of Florida · Phase 1, Interventional, and Treatment
A Phase I open-label, multicenter study, to evaluate the safety, feasibility, and maximum tolerated dose (MTD) of treating children with newly diagnosed DIPG or recurrent neuroblastoma with molecular targeted therapy in combination with adoptive cell therapy (Total tumor mRNA-pulsed autologous Dendritic Cells (DCs) (TTRNA-DCs), Tumor-specific ex vivo expanded autologous lymphocyte transfer (TTRNA-xALT) and Autologous G-CSF mobilized Hematopoietic Stem Cells (HSCs)).
625 studies on the registry are indexed under Neuroblastoma; 122 are open to participants now.
This study's planned enrollment of 24 is below the median of 32 across 475 interventional studies indexed under Neuroblastoma.
Browse Neuroblastoma studies →University of Florida is the lead sponsor of 1,254 studies on the registry; 201 are open to participants now.
Of its 170 completed or terminated interventional studies of FDA-regulated products, 136 (80%) have results posted.
Counted across the registry records on this site, refreshed daily.
High Risk Neuroblastoma-
Diffuse Intrinsic Pontine (or other brain stem) Glioma
DIPG must be ≥ 3 years of age at enrollment
Bone Marrow:
Adequate liver function must be demonstrated, defined as:
Exclusion Criteria:
This Phase I study is will utilize a standard 3+3 dose escalation design to establish the MTD and will evaluate the following three pre-specified dose levels of xALT: Dose Level 1: 3 x10\^7 cells/kg Dose Level +1: 3 x10\^8 cells/kg Dose Level -1: 3 x10\^6 cells/kg The dose escalation scheme will be evaluated for Arm 1 and Arm 2 separately. For each Study Arm, a minimum of 4 DLT evaluable subjects and a maximum of 12 DLT evaluable subjects will be enrolled (a total of 8 to 24 DLT evaluable subjects).
Biological: Tumor-specific ex vivo expanded autologous lymphocyte transfer (TTRNA-xALT)
This Phase I study is will utilize a standard 3+3 dose escalation design to establish the MTD and will evaluate the following three pre-specified dose levels of xALT: Dose Level 1: 3 x10\^7 cells/kg Dose Level +1: 3 x10\^8 cells/kg Dose Level -1: 3 x10\^6 cells/kg The dose escalation scheme will be evaluated for Arm 1 and Arm 2 separately. For each Study Arm, a minimum of 4 DLT evaluable subjects and a maximum of 12 DLT evaluable subjects will be enrolled (a total of 8 to 24 DLT evaluable subjects).
Biological: Tumor-specific ex vivo expanded autologous lymphocyte transfer (TTRNA-xALT)
There will be two immunotherapy products manufactured and administered to subjects enrolled on this trial. The first product will be autologous dendritic cells (DCs) loaded with total tumor messenger ribonucleic acid (mRNA) (TTRNA) derived from malignant tumors. The second product will be autologous T lymphocytes stimulated ex vivo against TTRNA antigens for autologous transfer (TTRNA-xALT). DCs are professional antigen-presenting cells critical for the initiation of B and T-cell responses in vivo.
Also known as: xALT
Number of Participants with Dose Limiting Toxicities as a Measure of Safety and Tolerability
To evaluate the dose-limiting toxicities (DLTs) and to establish the maximum tolerated dose (MTD) of treating children with molecular targeted therapy in combination with adoptive cellular therapy
Time frame: 2 years
Number of Participants with Adverse Events as a Measure of Safety and Tolerability
To evaluate the overall safety profile of study treatment
Time frame: 2 years plus 30 days
Number of Participants that are able to have vaccine produced and delivered
To evaluable the feasibility of producing and administering the protocol directed therapy
Time frame: 2 years
Number of participants with progression free survival (PFS) during study
To determine the activity of treatments chosen based on Progression free survival (PFS)
Time frame: 7 years
Number of participants with overall survival (OS) during study
To determine the activity of treatments chosen based on Overall Survival (OS)
Time frame: 7 years
Determine the Overall Response Rate (ORR) of Participants using INSS Response Evaluation Criteria for NB and RANO criteria for DIPG
To determine the activity of treatments chosen based on Overall Response Rate (ORR)
Time frame: 2 years
Plan to share: No
This study is active, not recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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