ClinicalTrials.gg
RecruitingNCT07284433QUADvanceUpdated Aug 28, 2026

Study of Allo-QuadCAR01-T, an Allogeneic CAR-T Targeting CD19/CD20, in Patients With Relapsed or Refractory B-Cell Malignancies

A Phase 1/2 interventional study of Cyclophosphamide (Non-IMP, Lymphodepletion) and Fludarabine (Non-IMP, Lymphodepletion) in Lymphoma Diffuse Large B-cell, Leukemia and Lymphoma and Leukemia Relapse, sponsored by AvenCell Therapeutics, Inc.. Recruiting at 13 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-28.

Sponsored by AvenCell Therapeutics, Inc. · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started Jan 2026; still recruiting 10 months later.

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Phase
Phase 1/2
Study type
Interventional
Enrollment
178
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 108 studies in Lymphoma, Large B-Cell, Diffuse with a site in Germany — 15 open to participants now, 28 under way, 7 of them phase 3. Lymphoma, Large B-Cell, Diffuse · Germany.

Planned enrollment
47th of 100
178 · median 156
Started
2026
with 3 others
Phase 1/2
16 of 108
5 open now
Primary completion
2029-04
later than 21 of 27 live
Registered
107th of 108
by date

Among the 108 studies in Lymphoma, Large B-Cell, Diffuse with a site in Germany, this one is the 47th largest by planned enrollment of the 100 interventional ones that give a count, is one of 4 that started in 2026, is one of 16 in phase 1/2, reaches primary completion later than 21 of the 27 other live ones, and was the 107th registered.

Lymphoma, Large B-Cell, Diffuse

1,869 studies on the registry are indexed under Lymphoma, Large B-Cell, Diffuse; 356 are open to participants now.

Browse Lymphoma, Large B-Cell, Diffuse studies →

Open to participants now

15 of the 108 studies in Lymphoma, Large B-Cell, Diffuse with a site in Germany are open now. Recruiting first, the newest first:

9 more — sign in →

All 15 open studies →

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

Who these studies take

Of the 265 Lymphoma, Large B-Cell, Diffuse studies recruiting now, 177 (67%) set no upper age limit and 50 (19%) stop at 75 or younger; 25 take children under 18; 7 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

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02

Study summary

This study is testing Allo-QuadCAR01-T, a new off-the-shelf CAR-T therapy for people with hard-to-treat B-cell cancers. Unlike current CAR-T treatments that use a patient's own cells, this therapy uses donor cells that are ready to use, which can save time and reduce costs. It targets two proteins, CD19 and CD20, to lower the chance of relapse and uses gene editing to make it safer. The trial has three parts: first to find a safe dose, then to confirm it, and finally to test how well it works in patients with diffuse large B-cell lymphoma (DLBCL). Patients will get one infusion after chemotherapy to prepare their body. The main goal is to check safety and see how many patients have a complete response by Week 13. About 160 patients will take part, and researchers will follow them for up to 15 years.

03

Conditions studied

  • Lymphoma Diffuse Large B-cell
  • Leukemia and Lymphoma
  • Leukemia Relapse
  • Lymphoma Receiving CAR-T Therapy
04

Who can participate

Ages eligible
18 Years and older
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

  • Adults 18 years or older.
  • Diagnosed with B-cell non-Hodgkin lymphoma (B-NHL) or chronic lymphocytic leukemia (CLL).
  • Must have received at least 2 .
  • performance status 0-1 (able to carry out daily activities).
  • Adequate organ function (heart, liver, kidneys).
  • HLA B/C match with donor cells.
  • No active uncontrolled infections.

Exclusion criteria

Exclusion Criteria:

  • Active CNS involvement (including PCNSL) in dose escalation cohorts; may be allowed in later cohorts with Sponsor approval.
  • Prior CAR-T within 3 months of screening, or ≥Grade 3 ICAHT from prior CAR-T.
  • stem cell transplant within 3 months.
  • Prior allogeneic stem cell transplant or solid organ transplant.
  • Prior therapy with dual CD19/CD20 CAR-T.
  • Severe to trial agents or similar compounds.
  • History of GvHD or post-transplant lymphoproliferative disorder.
  • Presence of La/SS-B autoantibodies or related diseases.
  • Other that may interfere with trial, except:

    • Curatively treated basal/squamous skin cancer or cervical carcinoma in situ
    • Low-grade, early-stage prostate cancer (Gleason ≤6, Stage 1-2) with no therapy needed
    • endocrine therapy for non- breast cancer (≥2 years)
    • Any other curatively treated malignancy in remission ≥2 years
  • Active viral infection within 1 week of screening, or serious bacterial/fungal infection.
  • Hemorrhagic cystitis.
  • Active neuro-autoimmune disease (e.g., MS, Guillain-Barré, ALS).
  • Active or residual , , or syphilis.
  • Active . History of HIV may be eligible with Sponsor approval if:
  • Neurological disorders within 6 months (e.g., stroke, dementia, Parkinson's, cerebellar disease, CNS autoimmune disease).
  • Significant cardiac disease within 6 months (e.g., MI, stent, unstable angina).
  • Primary immunodeficiency or autoimmune disease requiring systemic treatment within 1 year (unless stable and Sponsor-approved).
  • Unresolved ≥Grade 2 non-hematologic toxicity from prior therapy (except neuropathy up to Grade 2).
  • Systemic within 28 days.
  • Last systemic lymphoma/CLL therapy (standard or ) within 28 days or 5 half-lives.
  • Major surgery within 14 days.
  • Local radiation within 28 days.
  • within 28 days.
  • Pregnant or breastfeeding.
Terms in these criteria, in plain language(15)

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.

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.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

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.

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.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

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.

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.

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

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.

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.

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.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
178 participants (estimated)

Study arms

  • Experimental
    Allo-QuadCAR01-T

    Phase Ia (Escalation): Participants with relapsed or refractory B-cell malignancies will receive lymphodepleting chemotherapy followed by a single infusion of Allo-QuadCAR01-T. Phase Ib (Expansion): After dose escalation, additional participants with relapsed or refractory B-cell lymphoma will receive lymphodepleting chemotherapy followed by a single infusion of Allo-QuadCAR01-T at one or more tolerable dose levels from Phase Ia. Phase II: Participants with relapsed or refractory DLBCL will receive lymphodepleting chemotherapy, followed by a single infusion of Allo-QuadCAR01-T at the recommended Phase II dose. The primary endpoint is complete response rate at Week 13, with secondary endpoints including duration of response, progression-free survival, and overall survival.

    Other: Cyclophosphamide (Non-IMP, Lymphodepletion) · Other: Fludarabine (Non-IMP, Lymphodepletion) · Drug: Allo-QuadCAR01-T

Interventions

  • OtherCyclophosphamide (Non-IMP, Lymphodepletion)

    Intravenous infusion over 3 days (d-5 to d-3)

  • OtherFludarabine (Non-IMP, Lymphodepletion)

    Intravenous infusion over 3 days (d-5 to d-3)

  • DrugAllo-QuadCAR01-T

    Single dose IV infusion on Day 1

06

What researchers measure

Primary outcomes

  1. Incidence of AEs defined as DLTs

    Incidence and intensity of adverse events (AEs) graded according to Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0, except for cytokine release syndrome (CRS), immune effector cell associated neurotoxicity syndrome (ICANS), tumor lysis syndrome, and graft versus host disease (GvHD), which will be graded according to widely accepted specialized criteria

    Time frame: At the end of cycle 1 (in total 28 days, given no treatment interruptions)

  2. To determine the maximum tolerated dose (MTD)

    MTD

    Time frame: At the End of Cycle 1 (in total 28 days, given no treatment interruptions)

  3. To determine the incidence of dose-limiting toxicities (DLT)

    Incidence of DLTs

    Time frame: At the end of cycle 1 (in total 28 days, given no treatment interruptions)

  4. Phase 2: Complete response rate (CRR)

    Complete remission rate is defined as the proportion of participants with complete remission, per international working group (IWG) Lugano classification, as assessed by the investigator.

    Time frame: Up to week 13

Secondary outcomes

  1. Pharmacokinetics of Allo-QuadCAR01-T in PB in patients after infusion of Allo-QuadCAR01-T

    Detection of VCN in blood samples

    Time frame: Up to 24 months

  2. To investigate the impact of Allo-QuadCAR01-T on MRD

    MRD levels in responding CLL patients

    Time frame: Up to 24 months

  3. To evaluate immunogenicity against Allo-QuadCAR01-T

    Incidence of ADA1 formation against anti-CD19/CD20 ECD and ADA2 formation against the RevCAR ECD of Allo-QuadCAR01-T

    Time frame: Up to 24 months

  4. To evaluate host immune cell depletion and reconstitution resulting from LD

    Enumeration of host PB B-cell, T cell, and NK cell numbers

    Time frame: Up to 24 months

  5. Overall Response Rate (ORR)

    ORR is defined as the proportion of participants with best objective response of either a CR or a partial response (PR) during the trial prior to any new anti-lymphoma, anti-CLL therapy or local radiotherapy for lymphoma , per the Lugano Classification, as determined by the investigator.

    Time frame: Up to 24 months

  6. Progression-Free Survival (PFS)

    PFS is defined as the time from Allo-QuadCAR01-T infusion to disease progression per the Lugano Classification, as determined by investigator review or death from any cause.

    Time frame: Up to 24 months

  7. Duration of Response (DOR)

    DOR is defined as the time from first objective response to disease progression or death from any cause among participants who have achieved CR or PR per the Lugano Classification, as determined by the investigator.

    Time frame: Up to 24 months

  8. Overall Survival (OS)

    OS is defined as the time from Allo-QuadCAR01-T infusion to death from any cause.

    Time frame: Up to 24 months

  9. Time to Next Treatment (TTNT)

    TTNT is defined as time from Allo-QuadCAR01-T infusion to the start of subsequent new anti-lymphoma, anti-CLL therapy or local radiotherapy for lymphoma.

    Time frame: Up to 24 months

07

Study locations

6 of 13 sites recruiting
08

Timeline

Tracking 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 Jan 2026 (actual). Primary completion is estimated for Apr 2029, 39 months after the start.

Of 51 industry-sponsored phase 1/2 interventional studies under Lymphoma, Large B-Cell, Diffuse, half reached primary completion within 75 months of starting (the median), counting those still running; a quarter within 54 and three quarters within 99. This study's planned 39 months is below that.

Counting every sponsor, half of 108 studies reached it within 70 months; a quarter within 50 and three quarters within 98.

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

Registered
Nov 25, 2025
First posted
Dec 16, 2025
StartActual
Jan 6, 2026
Primary completionEst.
Apr 27, 2029
CompletionEst.
Nov 2, 2029
Last update
Aug 28, 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.
No changes since tracking began. The registry record was last updated on Aug 28, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07284433
Lead sponsor
AvenCell Therapeutics, Inc.
Collaborators
AvenCell Europe GmbH
Responsible party
Sponsor
First posted
Dec 16, 2025
Start date
Jan 6, 2026
Primary completion
Apr 27, 2029 (estimated)
Completion
Nov 2, 2029 (estimated)
Last update
Aug 28, 2026

Study contacts

Antje Warth, Dr.
Contact
avc-203-01@avencell.com
0493514466450 ext. 0
Katja Jersemann, Dr.
Contact
avc-203-01@avencell.com
0493514466450 ext. 0

Oversight

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

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