ClinicalTrials.gg
RecruitingNCT04544592Updated Sep 14, 2026

UCD19 CarT in Treatment of Pediatric B-ALL and B-NHL

A Phase 1/2 interventional study of CD19CAR-CD3Zeta-4-1BB-Expressing Autologous T-Lymphocyte Cells in B-cell Acute Lymphoblastic Leukemia and B-cell Non Hodgkin Lymphoma, sponsored by University of Colorado, Denver. Recruiting at 1 site in United States. Open to participants aged 31 Days to 30 Years. Per ClinicalTrials.gov, last updated 2026-09-14.

Sponsored by University of Colorado, Denver · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started Mar 2021; still recruiting 5 years 8 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
45
Allocation
Non-randomized
Ages
31 Days to 30 Years
Sex
All
01

Study summary

This phase I/II trial will investigate a new CD19 directed CAR-T therapy manufactured locally with the goals to expedite infusion to wider patient inclusion that includes those who were previously excluded, such as pediatric patients with B-cell NHL and patients in primary relapse.

Read the detailed description

Pediatric patients with refractory or multiply relapsed leukemia and lymphoma do poorly with traditional chemotherapy and have overall survival rates below 20%-50% depending on a variety of disease and patient related characteristics. Approximately 10-20% of pediatric patients with pre B-ALL will relapse (1) and relapsed pre B-ALL is a leading cause of cancer death in children (2). Site of relapse and timing of first relapse from initial therapy are important factors that impact the survival rates after first relapse (3). The 5-year survival for pre B-ALL pediatric patients with early relapse is 25-50% (2). Pediatric patients who experience a late relapse have excellent survival rates with chemotherapy alone, however if they have MRD positivity after reinduction, this drops their survival rates down to 50-60% (4). The FDA approval of CD19-directed CAR-T cell therapy has increased treatment options for patients with refractory disease or those in second relapse. However, many patients, including those in first relapse do not fit the current criteria to receive this treatment. As well, regardless of the number of prior relapses, some patients in second relapse cannot tolerate the extended delay and ongoing therapy that is necessary for the commercial manufacturing of these cells at the commercial level.

This phase I/II trial will investigate a new CD19-directed CAR-T therapy manufactured locally with the goal of expediting the infusion to patients who were previously excluded, such as pediatric patients with relapsed B-cell NHL and patients in their initial (or greater) leukemic relapse. We hypothesize that CD19-directed CAR-T cells manufactured using the Miltenyi CliniMACs Prodigy System (UCD19 CAR-T) will be safe, well-tolerated, and show preliminary efficacy in pediatric patients with relapsed and/or refractory B-ALL or B-NHL. No controls will be used beyond historical comparisons.

02

Conditions studied

  • B-cell Acute Lymphoblastic Leukemia
  • B-cell Non Hodgkin Lymphoma

Keywords

  • CD19
  • CAR-T
  • pediatric
  • relapsed
  • refractory
  • B-ALL
  • B-NHL
  • Miltenyi CliniMACS Prodigy
03

In context

Burkitt Lymphoma

976 studies on the registry are indexed under Burkitt Lymphoma; 159 are open to participants now.

This study's planned enrollment of 45 is above the median of 36 across 765 interventional studies indexed under Burkitt Lymphoma.

Browse Burkitt Lymphoma studies →

Lead sponsor

University of Colorado, Denver is the lead sponsor of 1,543 studies on the registry; 317 are open to participants now.

Of its 147 completed or terminated interventional studies of FDA-regulated products, 92 (63%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
31 Days to 30 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Meets clinical criteria for leukapheresis or has a leukapheresis product previously collected and stored per recommended guidelines.
  • Provision of signed and dated consent form from parent or guardian (patients \<18), the patient themselves (>18), or legally authorized representative (patient >18 who lack decision-making capacity); Pediatric patients will be included in age-appropriate discussions and assent will be obtained for those > 7 years of age, when appropriate, according to institutional standards.
  • Willingness to participate in long term follow up study.
  • Stated willingness to comply with all study procedures and be available for the duration of the study.
  • Males OR non-pregnant, non-breastfeeding females.

    o Patients of or capable of fathering a child must agree to use highly effective from the time of initial CAR T cell administration though 12 months following the final administration of product.

  • Aged 31 days to 30 years (inclusive) at time of consent and enrollment.
  • Acute Lymphoblastic Leukemia (ALL) OR Non-Hodgkin Lymphoma (NHL) of B-cell origin that:

    • Has confirmed expression of CD19 by flow cytometry, immunohistochemistry (IHC), or both.

Cohort One Criteria:

  • Meets any one of the following conditions:

    • two or more times
    • Relapsed at any time after BMT
    • Refractory to standard therapy as determined by the treating physician
    • Meets criteria for BMT but is ineligible as determined by the treating physician Patient and/or parents declining BMT options and would prefer CAR-T Therapy.
  • Non-Hodgkin Lymphoma includes all of the following:

    • Diffuse large B-cell lymphoma (DLBCL)
    • Burkitt Lymphoma
    • Intermediate lymphoma between Burkitt and DLBCL
    • Primary Mediastinal B-cell Lymphoma (PMBL)
    • Follicular lymphoma
    • High grade B cell lymphoma
    • Transformed lymphoma

Cohort Two Criteria:

  • B-ALL in first relapse with any one of the following conditions:

    • High-risk genomic alterations at initial diagnosis such as KMT2A gene rearrangement, t(17;19), hypodiploidy, Ph-like mutations, BCR-ABL1 fusion (Ph+ ALL), iAMP21, and TP53 inactivating mutation/deletion.
    • Isolated CNS relapse such that cranial radiation would be indicated as a component of standard salvage therapy.
    • Down syndrome.
    • Minimal residual disease (MRD) positivity of > 0.01% by FACS or > 0 clonal sequences by NGS in bone marrow post re-induction chemotherapy.
    • Age 18 years or older. OR Newly diagnosed with persistent MRD ≥ 0.01% by flow cytometry in bone marrow at end of consolidation.
  • Performance score (Lansky or ) of 50% or better;
  • Unable to or declined to receive commercially available CD19 CAR-T Therapy.

Exclusion criteria

Exclusion Criteria:

  • Evidence of rapidly progressive disease without adequate salvage/bridging regimens as determined by the investigator.
  • Active (GvHD).
  • Active, uncontrolled, life-threatening infection that at the determination of the treating physician would preclude safe leukapheresis or tolerance of LD chemotherapy, cell infusion, or cytokine release syndrome.
  • Evidence of severe organ dysfunction as defined by:

    • Myocardial dysfunction: ≤ 40% or shortening fraction ≤ 28%, evidence of physiologically significant pericardial effusion as determined by an echocardiogram (ECHO), and (ECG) findings.
    • Baseline oxygen saturation of ≤ 90% on room air
    • Transaminases > 10x (ULN) or >2x the ULN, unless thought to be related to primary disease
    • Estimated Cr clearance \<60 mL/min/1.73 m2 (if nuclear medicine or other more specific testing exceeds this level than it can supersede the estimated clearance)
  • Post-pubertal females that are pregnant, planning to become pregnant, or unwilling to use (includes abstinence) for the study duration.
  • Known infection, or active or active infection.
Terms in these criteria, in plain language(16)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

Karnofsky performance status (KPS)

A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.

Studies often ask for 60 or 70 and above. Your doctor gives the score.

GVHD (graft-versus-host disease)

After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
45 participants (estimated)

Study arms

  • Experimental
    Phase I: Dose Escalation

    First 4-18 subjects enrolled. Treated with escalating doses of therapy until the recommended phase 2 dose (RP2D) is determined.

    Drug: CD19CAR-CD3Zeta-4-1BB-Expressing Autologous T-Lymphocyte Cells

  • Experimental
    Phase II: Dose Expansion

    Up to 18 additional subjects will be treated at the recommended Phase 2 dose (RP2D) to allow for 12 total subjects to be treated in each cohort, including those treated within the phase 1 portion at the RP2D.

    Drug: CD19CAR-CD3Zeta-4-1BB-Expressing Autologous T-Lymphocyte Cells

Interventions

  • DrugCD19CAR-CD3Zeta-4-1BB-Expressing Autologous T-Lymphocyte Cells

    The CD19 CAR used in this study consists of three main components: the variable regions of the anti-CD19 monoclonal antibody FMC63 71, linked to the TNFRSF-19-derived transmembrane domain, the 4-1BB costimulatory molecule, and the signaling domain of the CD3-zeta molecule. The DNA encoding this receptor was cloned into a lentiviral vector (LV) backbone.

06

What researchers measure

Primary outcomes

  1. Determine the safety and tolerability of UCD19 CAR-T infusion in pediatric patients with B-ALL or B-NHL

    DLTs of UCD19 CAR-T will be assessed at each of the dose levels in a standard 3+3 dose-escalation design with a determination of recommended Phase 2 dose (RP2D).

    Time frame: Post UCD19 infusion to Day 28

  2. Determine the preliminary efficacy of UCD19 CAR-T cells in pediatric patients with B-ALL or B-NHL

    Following determination of UCD19 CAR-T RP2D, there will be a cohort expansion to determine preliminary efficacy and biological activity by assessment of CR status.

    Time frame: Day 28 (for B-ALL) and Day 90 (for B-NHL) post UCD19 infusion

Secondary outcomes

  1. Determine the preliminary efficacy of UCD19 CAR-T cells in pediatric patients with B-ALL during the expansion phase

    Rate of patients who have morphologic remission post infusion for B-ALL as assessed by bone marrow morphology.

    Time frame: Day 60

  2. Determine the preliminary efficacy of UCD19 CAR-T cells in pediatric patients with B-ALL during the expansion phase

    Rate of patients with radiographic remission post infusion for B-NHL

    Time frame: Day 90

  3. Determine the preliminary efficacy of UCD19 CAR-T cells in pediatric patients with B-ALL during the expansion phase

    Rate of efficacy as assessed by bone marrow minimal residual disease assessment by flow cytometric analysis and next generation sequencing for B-ALL patients

    Time frame: Months 1, 2, 3, 6, and 12

  4. Determine the preliminary efficacy of UCD19 CAR-T cells in pediatric patients with B-ALL during the expansion phase

    Median duration of remission as assessed by bone marrow minimal residual disease assessment by flow cytometric analysis and next generation sequencing for B-ALL patients

    Time frame: Months 1, 2, 3, 6, and 12

  5. Determine the preliminary efficacy of UCD19 CAR-T infusion in pediatric patients after first relapse with B-ALL during the expansion phase

    Rate of event free survival (EFS) post UCD19 CAR-T cell infusion for B-ALL patients in first relapse.

    Time frame: At Months 6 and 12

  6. Determine the preliminary efficacy of UCD19 CAR-T infusion in pediatric patients after first relapse with B-ALL during the expansion phase

    Median duration of B-cell aplasia will be assessed by flow cytometry post UCD19 CAR-T cell infusion.

    Time frame: At Months 1, 2 , 3, 6 and 12-months

  7. Determine the preliminary efficacy of UCD19 CAR-T infusion in pediatric patients after first relapse with B-ALL during the expansion phase

    Incidence of patients who require stem cell transplantation (SCT) within 12-months post UCD19 CAR-T cell infusion.

    Time frame: Up to 12 months post infusion

  8. Determine the preliminary efficacy of UCD19 CAR-T infusion in pediatric patients after first relapse with B-ALL during the expansion phase

    Incidence of patients who require cranial radiation within 12-months post UCD19 CAR-T cell infusion.

    Time frame: Up to 12 months post infusion

  9. Determine the preliminary efficacy of UCD19 CAR-T infusion in pediatric patients after first relapse with B-ALL during the expansion phase

    Incidence of clinically significant infections (defined as those that require treatment) will be collected over the first year of treatment.

    Time frame: Up to 12 months post infusion

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 14, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04544592
Collaborators
Children's Hospital Colorado
Responsible party
Sponsor
First posted
Sep 10, 2020
Start date
Mar 10, 2021
Primary completion
Mar 10, 2030 (estimated)
Completion
Mar 10, 2031 (estimated)
Last update
Sep 14, 2026

Study contacts

Vanessa Fabrizio, MD, MS
Contact
BMT@childrenscolorado.org
720-777-6860
Kayla Ortiz
Contact
kayla.ortiz@childrenscolorado.org
720-777-2564
Vanessa Fabrizio, MD, MS
principal investigator · Children's Hospital Colorado

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion