ClinicalTrials.gg
RecruitingNCT07838714Updated Sep 25, 2026

Dual-Targeted Umbilical Cord Blood CAR-T Cells Against CD19 and CD22 for the Treatment of Relapsed or Refractory Acute B-Cell Lymphoblastic Leukemia

A Phase 1 interventional study of Anti-CD19/CD22 Dual-Target Cord Blood CAR-T Cells and Fludarabine in B-cell Acute Lymphoblastic Leukemia, sponsored by Ruijin Hospital. Recruiting at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-09-25.

Sponsored by Ruijin Hospital · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started May 2026; still recruiting 5 months later.
Phase
Phase 1
Study type
Interventional
Enrollment
18
Allocation
Not applicable
Ages
18 Years to 75 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 102 studies in Burkitt Lymphoma with a site in China — 58 open to participants now, 62 under way, 4 of them phase 3. Burkitt Lymphoma · China.

Planned enrollment
70th of 100
18 · median 24
Started
2026
with 10 others
Phase 1
53 of 102
29 open now
Primary completion
2028-03
later than 48 of 61 live
Registered
98th of 102
by date

Among the 102 studies in Burkitt Lymphoma with a site in China, this one is the 70th largest by planned enrollment of the 100 interventional ones that give a count, is one of 11 that started in 2026, is one of 53 in phase 1, reaches primary completion later than 48 of the 61 other live ones, and was the 98th registered.

Burkitt Lymphoma

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

Browse Burkitt Lymphoma studies →

Open to participants now

58 of the 102 studies in Burkitt Lymphoma with a site in China are open now. Recruiting first, the newest first:

52 more — sign in →

All 58 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 128 Burkitt Lymphoma studies recruiting now, 38 (30%) set no upper age limit and 77 (60%) stop at 75 or younger; 75 take children under 18; 2 take healthy volunteers.

This study: 18 Years to 75 Years · all sexes · no healthy volunteers.

The full table on the hub →

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 102 studies in Burkitt Lymphoma with a site in China, or all of them as a file.
02

Study summary

This investigator-initiated, prospective, single-arm, phase I dose-escalation trial aims to evaluate the safety and tolerability of anti-CD19/CD22 dual-target cord blood-derived CAR-T cells in adult patients with relapsed/refractory B-cell acute lymphoblastic leukemia who have failed prior therapies, with the goal of reducing antigen-escape relapse and overcoming poor autologous T-cell fitness through the use of universally available umbilical cord blood T cells.

Read the detailed description

Patients with relapsed/refractory B-cell acute lymphoblastic leukemia who meet eligibility criteria will receive fludarabine (30 mg/m²/d) and cyclophosphamide (300 mg/m²/d) for three consecutive days as lymphodepleting conditioning, followed by a single intravenous infusion of anti-CD19/CD22 dual-target cord blood-derived CAR-T cells. Dose assignment follows a "3+3" escalation design across three dose levels (4×10⁶, 8×10⁶, and 12×10⁶ CAR-T/kg, ±20%). Dose-limiting toxicity will be assessed during the first 14 days post-infusion to determine the maximum tolerated dose. After CAR-T infusion, patients will be monitored for safety and efficacy at protocol-specified time points through 3 months, with long-term follow-up continuing up to 15 years post-infusion. A total of 18 patients will be enrolled.

03

Conditions studied

  • B-cell Acute Lymphoblastic Leukemia

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Keywords

  • Relapsed/refractory B-cell acute lymphoblastic leukemia
  • CAR-T cell
  • Umbilical cord blood
04

Who can participate

Ages eligible
18 Years to 75 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

  • The patient or their legally authorized guardian has signed the form (ICF), indicating understanding of the purpose and procedures of this clinical trial and willingness to participate.
  • Age between 18 and 75 years, male or female.
  • Diagnosis of B-cell acute lymphoblastic leukemia (R/R B-ALL) according to the Chinese Guidelines for Diagnosis and Treatment of Adult Acute Lymphoblastic Leukemia (2024 edition).
  • Leukemic cells confirmed to express CD19 and/or CD22 by flow cytometry.
  • performance status 0-2.
  • ≥12 weeks.
  • Adequate organ function at screening, meeting all of the following laboratory criteria:

    1. Hematology: (ANC) ≥1×10⁹/L; absolute lymphocyte count (ALC) ≥0.3×10⁹/L; count ≥20×10⁹/L; ≥60 g/L.
    2. Hepatic function: and AST ≤2.5× (ULN); total ≤1.5× ULN.
    3. Renal function: (CrCl) ≥40 mL/min (by Cockcroft-Gault formula).
    4. Coagulation: fibrinogen ≥1.0 g/L; (APTT) ≤1.5× ULN; prothrombin time (PT) ≤1.5× ULN.
    5. Oxygen saturation >91%.
    6. (LVEF) ≥50%.
  • The subject and their spouse agree to use effective measures (excluding rhythm method) from ICF signing through 1 year after CAR-T cell infusion.

Exclusion criteria

Exclusion Criteria:

  • Active (GVHD) or disease requiring long-term therapy.
  • Use of therapeutic doses of (defined as prednisone or equivalent >20 mg/day) within 7 days prior to screening. Physiologic replacement, topical, and inhaled steroids are permitted.
  • Hypertension not controllable with medication.
  • Severe cardiac disease, including but not limited to: unstable angina, myocardial infarction (within 6 months prior to screening), congestive heart failure ( class ≥III), or severe arrhythmia.
  • Unstable systemic disease as judged by the investigator, including but not limited to: severe hepatic, renal, or metabolic disease requiring medication.
  • other than B-ALL within 5 years prior to screening, except for adequately treated carcinoma in situ of the cervix, basal cell or squamous cell skin cancer, localized prostate cancer after radical surgery, or ductal carcinoma in situ of the breast after radical surgery.
  • History of solid organ transplantation.
  • Planned surgery within 2 weeks after study treatment (subjects scheduled for local anesthesia surgery may participate).
  • Receipt of other interventional drugs within 1 month prior to ICF signing.
  • Uncontrolled active infection.
  • Positive for , or positive for HBcAb with detectable HBV DNA in peripheral blood; positive for antibody with detectable HCV RNA; positive for antibody; positive for CMV DNA; positive for syphilis serology.
  • Pregnant or breastfeeding women.
  • Psychiatric illness, consciousness disorder, or central nervous system disease.
  • Other conditions deemed unsuitable for enrollment by the investigator.
Terms in these criteria, in plain language(24)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

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.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

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.

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.

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.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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.

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.

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.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
18 participants (estimated)

Study arms

  • Experimental
    Anti-CD19/CD22 Dual-Target Cord Blood CAR-T Cells

    A single intravenous infusion of anti-CD19/CD22 dual-target umbilical cord blood-derived CAR-T cells administered on Day 0, following lymphodepleting chemotherapy with fludarabine (30 mg/m²/day) and cyclophosphamide (300 mg/m²/day) for three consecutive days. Dose escalation follows a 3+3 design across three dose levels (4.0×10⁶, 8.0×10⁶, and 12.0×10⁶ CAR-T/kg, ±20%). All subjects receive the same investigational product; no comparator arm is included.

    Biological: Anti-CD19/CD22 Dual-Target Cord Blood CAR-T Cells · Drug: Fludarabine · Drug: Cyclophosphamide

Interventions

  • BiologicalAnti-CD19/CD22 Dual-Target Cord Blood CAR-T Cells

    Genetically modified umbilical cord blood-derived T cells expressing chimeric antigen receptors targeting both CD19 and CD22. Administered as a single intravenous infusion on Day 0 following lymphodepleting chemotherapy. Dose levels: 4.0×10⁶, 8.0×10⁶, and 12.0×10⁶ CAR-T/kg (±20%) according to 3+3 dose escalation design.

  • 30 mg/m² intravenous infusion over 30 minutes once daily for 3 consecutive days as lymphodepleting preconditioning prior to CAR-T cell infusion.

  • 300 mg/m² intravenous infusion over 30 minutes once daily for 3 consecutive days as lymphodepleting preconditioning prior to CAR-T cell infusion.

06

What researchers measure

Primary outcomes

  1. Incidence and Severity of Dose-Limiting Toxicity (DLT)

    DLT is defined as treatment-related adverse events occurring within 14 days post-infusion. Non-hematologic DLT: Grade ≥3 toxicity not reducible to ≤ Grade 1 within 72 hours. Hematologic DLT: Grade 4 toxicity (excluding lymphopenia) persisting \>21 days, not attributable to underlying disease. Predefined exclusion criteria include tumor lysis syndrome, electrolyte disturbances, hypogammaglobulinemia, transient laboratory abnormalities, febrile neutropenia, and others per protocol. CRS/ICANS graded per ASTCT 2019, aGVHD per modified Glucksberg, other AEs per CTCAE v5.0.

    Time frame: Within 14 days after CAR-T cell infusion

Secondary outcomes

  1. Objective Response Rate (ORR)

    ORR is the proportion of subjects achieving CR/CRi at 1 and 3 months post-infusion. Efficacy assessed by bone marrow examination per international acute leukemia response criteria.

    Time frame: 1 and 3 months post-infusion

  2. Minimal Residual Disease (MRD) Negativity Rate

    MRD negativity rate is the proportion of subjects achieving MRD-negative status by flow cytometry at 1 and 3 months post-infusion.

    Time frame: 1 and 3 months post-infusion

  3. Complete Remission (CR) Rate

    CR rate is the proportion achieving CR. Efficacy assessed by bone marrow examination per international acute leukemia response criteria.

    Time frame: 1 and 3 months post-infusion

  4. Progression-Free Survival (PFS)

    PFS is defined as time from infusion to disease progression, relapse, or death. Median PFS and 12-/24-month PFS rates will be estimated by Kaplan-Meier method.

    Time frame: From infusion up to 24 months

  5. Overall Survival (OS)

    OS is defined as time from infusion to death from any cause. Median OS and 12-/24-month OS rates will be estimated by Kaplan-Meier method.

    Time frame: From infusion up to 24 months

  6. CAR-T Cell Expansion and Persistence

    CAR-T cell levels and vector copy number (VCN) in peripheral blood will be measured.

    Time frame: Up to 90 days post-infusion

  7. CAR-T Cell Expansion and Persistence

    PK parameters: Cmax(Peak Plasma Concentration)

    Time frame: Up to 90 days post-infusion

  8. CAR-T Cell Expansion and Persistence

    PK parameters: Tmax

    Time frame: Up to 90 days post-infusion

  9. CAR-T Cell Expansion and Persistence

    PK parameters: AUC₀-₂₈d, AUC₀-₉₀d.

    Time frame: Up to 90 days post-infusion

  10. CAR-T Cell Expansion and Persistence

    Proportion of subjects with detectable CAR-T cells at 3 and 6 months, and duration of persistence will be recorded.

    Time frame: At 3 and 6 months

07

Study locations

1 of 1 sites recruiting
08

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2026 (actual). Primary completion is estimated for Mar 2028, 22 months after the start.

Of 87 non-industry phase 1 interventional studies under Burkitt Lymphoma, half reached primary completion within 57 months of starting (the median), counting those still running; a quarter within 38 and three quarters within 90. This study's planned 22 months is below that.

Counting every sponsor, half of 109 studies reached it within 61 months; a quarter within 38 and three quarters within 90.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 26, 2026
First posted
Sep 24, 2026
StartActual
May 13, 2026
Primary completionEst.
Mar 30, 2028
CompletionEst.
Mar 30, 2028
Last update
Sep 25, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Minor edits
Nothing that changes what the study is or who can join. Edited: criteria formatting
1 update, last Sep 25, 2026
Show all 1 update
  1. Sep 25, 2026
    Minor edits only
    + 1 other change: criteria formatting

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

09

Registry details

Key details

Study ID
NCT07838714
Lead sponsor
Ruijin Hospital
Responsible party
Jin Wang (chief physician, MD, PhD, Ruijin Hospital) — Principal investigator
First posted
Sep 24, 2026
Start date
May 13, 2026
Primary completion
Mar 30, 2028 (estimated)
Completion
Mar 30, 2028 (estimated)
Last update
Sep 25, 2026

Study contacts

Weiyang Liu
Contact
lwy21758760@sjtu.edu.cn
+86 13817506393

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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