ClinicalTrials.gg
Active, not recruitingNCT03277729Updated Jun 22, 2026Results posted

A Phase I/II Study to Evaluate the Safety of Cellular Immunotherapy Using Autologous T Cells Engineered to Express a CD20-Specific Chimeric Antigen Receptor for Patients With Relapsed or Refractory B Cell Non-Hodgkin Lymphomas

A Phase 1/2 interventional study of Chimeric Antigen Receptor T-Cell Therapy and Cyclophosphamide in Recurrent B-Cell Non-Hodgkin Lymphoma, Recurrent Chronic Lymphocytic Leukemia and Recurrent Diffuse Large B-Cell Lymphoma, sponsored by Fred Hutchinson Cancer Center. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-22.

Primary conditionLymphoma, Large B-Cell, DiffuseRegistry: Lymphoma, B-CellReclassifiedWhy we changed it
Registry
Lymphoma, B-Cell — the first condition term the registry derived for this study.
ClinicalTrials.gg
Lymphoma, Large B-Cell, Diffuse
Why
  1. The study's listed conditions name Lymphoma, Large B-Cell, Diffuse, a narrower term within Lymphoma, B-Cell.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Fred Hutchinson Cancer Center · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
53
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this research is to find the best dose of genetically modified T-cells, to study the safety of this treatment, and to see how well it works in treating patients with B cell non-Hodgkin lymphoma that has come back (relapsed) or did not respond to previous treatment (refractory).

Read the detailed description

OUTLINE:

This is a phase I/II dose-escalation study of CD20-specific CAR T cell therapy.

Patients undergo leukapheresis and may receive treatment after if needed for disease control. Patients then receive cyclophosphamide intravenously (IV). Patients may also receive fludarabine IV. After 36-96 hours, patients receive CD20-specific CAR T cell infusion IV over 20-30 minutes.

Patients will be actively participating in the study for approximately 15 months. The total time includes the time for the T cells to be made, the T cell infusion, and for approximately 12 months after the T cell infusion is given. After completion of study treatment, patients are followed up for a minimum of 15 years.

02

Conditions studied

  • Recurrent B-Cell Non-Hodgkin Lymphoma
  • Recurrent Chronic Lymphocytic Leukemia
  • Recurrent Diffuse Large B-Cell Lymphoma
  • Recurrent Follicular Lymphoma
  • Recurrent Lymphoplasmacytic Lymphoma
  • Recurrent Mantle Cell Lymphoma
  • Recurrent Marginal Zone Lymphoma
  • Refractory B-Cell Non-Hodgkin Lymphoma
  • Refractory Diffuse Large B-Cell Lymphoma
  • Refractory Follicular Lymphoma
  • Refractory Lymphoplasmacytic Lymphoma
  • Refractory Mantle Cell Lymphoma
  • Refractory Transformed Non-Hodgkin Lymphoma
  • Recurrent Transformed B-Cell Non-Hodgkin Lymphoma
  • Recurrent Transformed Chronic Lymphocytic Leukemia
  • Refractory Marginal Zone Lymphoma
  • Refractory Transformed B-Cell Non-Hodgkin Lymphoma
  • Refractory Transformed Chronic Lymphocytic Leukemia
  • Recurrent Small Lymphocytic Lymphoma
  • Refractory Chronic Lymphocytic Leukemia
  • Refractory Small Lymphocytic Lymphoma
  • Recurrent Central Nervous System Lymphoma
  • Refractory Central Nervous System Lymphoma

Keywords

  • Lymphoid Leukemia
  • Non-Hodgkin's Lymphoma
03

In context

Lymphoma, Large B-Cell, Diffuse Reclassified

1,868 studies on the registry are indexed under Lymphoma, Large B-Cell, Diffuse; 355 are open to participants now.

This study's enrollment of 53 is above the median of 45 across 1,497 interventional studies indexed under Lymphoma, Large B-Cell, Diffuse.

Browse Lymphoma, Large B-Cell, Diffuse studies →

Lead sponsor

Fred Hutchinson Cancer Center is the lead sponsor of 547 studies on the registry; 80 are open to participants now.

Of its 59 completed or terminated interventional studies of FDA-regulated products, 46 (78%) have results posted.

Compared within Lymphoma, Large B-Cell, Diffuse, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Lymphoma, B-Cell. The counts are of registry records indexed under each term, refreshed daily. How we classify →

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

  • Patients must have B-cell non-Hodgkin lymphoma or chronic lymphocytic leukemia/small lymphocytic lymphoma. Eligible lymphoma subtypes include (but not limited to): mantle cell, follicular, lymphoplasmacytic, marginal zone, transformed indolent B cell lymphoma (including transformed chronic lymphoid leukemia [CLL]), or diffuse large B cell lymphoma that has after a response to at least one prior therapy regimen or is refractory to prior therapy; patients with mantle cell lymphoma must have previously been treated with a Bruton tyrosine kinase (BTK) inhibitor and have either had disease progression, intolerance, or exposure to the drug for at least 3 months; patients with CLL/SLL are eligible if they had disease progression or intolerance to BTKis and/or a BCL-2 inhibitors; they are also required to have been treated with the other agent for at least 3 months (i.e. patients with progression/intolerance to BTKi need to be treated with a BCL-2 inhibitor for at least 3 months, and patients with progression/intolerance to BCL-2 inhibitor need at least 3 months of exposure to a BTKi); patients with de novo diffuse large B-cell lymphoma (DLBCL) must meet one of the following criteria:

    • -proven refractory disease after a frontline regimen containing both an anthracycline and rituximab or other anti-CD20 antibody (i.e. "primary refractory"), where any disease recurring within 6 months of completion of the regimen is considered refractory
    • Relapsed or refractory disease after at least one of the following:

      • At least 2 (including at least one with an anthracycline and anti-CD20 antibody)
      • stem cell transplant
      • Allogeneic stem cell transplant
  • Patients with large cell lymphoma transformed from indolent lymphomas are eligible if previously treated with anthracycline containing regimen for either the indolent or large cell histology
  • Patients with central nervous system (CNS) lymphoma need to meet one of the following criteria:

    • Primary CNS lymphoma:

      • Progressive disease after 3 cycles or an inadequate response after at least 4 cycles of a high-dose methotrexate (MTX) containing regimen in the opinion of the treating physician, OR
      • Not eligible for MTX therapy due to commodities or tolerance issues per treating physician OR
      • Recurrent disease after an initial response to MTX-based treatment
    • Secondary CNS lymphoma:

      • An inadequate rtesponse to at least 2 cycles of a MTX containing regimen, OR
      • Recurrent disease after an initial response to MTX-based treatment
  • Patients must be 18 years of age or older, of any gender, race or ethnicity
  • Patients must be capable of understanding and providing a written
  • Negative serum pregnancy test within 2 weeks before enrollment for women of , defined as those who have not been surgically sterilized or who have not been free of menses for at least 1 year
  • Fertile male and female patients must be willing to use an effective method before, during, and for at least 4 months after the CAR T cell infusion
  • Patients must have a performance status of >= 60%
  • Confirmation of diagnosis by internal pathology review of initial or subsequent biopsy or other pathologic material at Fred Hutchinson Cancer Research Center (FHCRC)/Seattle Cancer Care Alliance (SCCA)/University of Washington (UW)/Harborview Medical Center (HMC)
  • Evidence of CD20 expression by immunohistochemistry or flow cytometry on the tumor specimen obtained with the biopsy performed with screening; if the CD20 expression on the screening tumor biopsy is unclear or could not be assessed due to technical reasons, CD20 expression on a concomitant tumor specimen (such as marrow biopsy or circulating tumor cells) may be used to satisfy this requirement. For CLL and lymphoplasmacytic lymphoma/Waldenström macroglobulinemia (WM) patients, the screening tumor biopsy can we waived for clinical reasons after discussion with the study principal investigator (PI). For patients with CNS lymphoma, a screening tumor biopsy is not required and evidence of CD20 expression can be documented from the original or prior biopsies
  • Serum creatinine =\< 2.5
  • Total =\< 3.0 mg/dL
  • (AST) and alanine aminotransferase (ALT) =\< 5 x the
  • Adequate pulmonary function, defined as =\< grade 1 dyspnea and saturated oxygen (SaO2) >= 92% on room air; if pulmonary function test (PFT)s are performed based on the clinical judgment of the treating physician, patients with (FEV1) >= 50% of predicted and carbon monoxide diffusing capability (DLCO) (corrected) of >= 40% of predicted will be eligible
  • Adequate cardiac function, defined as (LVEF) of >= 50% as assessed by echocardiogram or multigated acquisition (MUGA) scan, or LVEF of 45-49% and clearance by a cardiologist
  • that can be accurately measured in at least one dimension as >= 1.5 cm with computed tomography (CT), ultrasound, or magnetic resonance imaging (MRI) techniques. Extranodal disease that is measurable by fludeoxyglucose F-18 (FDG)-positron emission tomography (PET) imaging only will also be allowed. Note that if an excisional biopsy was performed that removed the sole site of measurable disease, the patient will not be eligible for leukapheresis and generation of CAR T cell product
  • For patients with CNS lymphoma, a lesion >= 1cm on brain or spine MRI is required
  • Patients with waldenstrom macroglobulinemia (WM) without radiologic evidence of disease are eligible if they have measurable disease, as defined by serum monoclonal M-spike of >= 0.5 g/dL
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Absence of uncontrolled active infection (bacterial, fungal, viral, mycobacterial) not responding to treatment with antibiotics, antiviral agents, or antifungal agents
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Absence of active disease requiring ongoing systemic therapy
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Negative serum pregnancy test within 2 weeks before lymphodepletion chemotherapy for women of childbearing potential, defined as those who have not been surgically sterilized or who have not been free of menses for at least 1 year
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: No treatment with any agent on a different clinical trial between enrollment and lymphodepleting chemotherapy
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Serum creatinine =\< 2.5
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Total bilirubin =\< 3.0 mg/dL
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: AST and ALT =\< 5 x the upper limit of normal
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Adequate pulmonary function, defined as =\< grade 1 dyspnea and SaO2 >= 92% on room air; if PFTs are performed based on the clinical judgment of the treating physician, patients with FEV1 >= 50% of predicted and DLCO (corrected) of >= 40% of predicted will be eligible
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Adequate cardiac function, defined as left ventricular ejection fraction (LVEF) of >= 50% as assessed by echocardiogram or MUGA scan, or LVEF of 45-49% and clearance by a cardiologist; if subject receives cardiotoxic chemotherapy after enrollment, repeat echocardiogram or MUGA is required to reestablish eligible LVEF
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Patients must have a Karnofsky performance status of >= 60%. Patients with CNS lymphoma with KPS of >= 50% are eligible if performance status is low because of the active lymphoma
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Measurable disease that can be accurately measured in at least one dimension as >= 1.5 cm with CT, ultrasound, or MRI techniques; extranodal disease that is measurable by FDG-PET imaging only will also be allowed; note that if an excisional biopsy was performed that removed the sole site of measurable disease, the patient is not be eligible for lymphodepletion and CAR T cell infusion; measurable disease can be based on the imaging study done during the screening unless the patient received treatment in the interim, in which case imaging should be repeated. For patients with CNS lymphoma, a lesion >= 1 cm on the brain or spine MRI is required. Patients with WM without radiologic evidence of disease are eligible if they have measurable disease, as defined by serum IgM level >= 0.5g/dL
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Patients must require no therapy or dose of less than 15 mg per day of prednisone or the equivalent; pulsed corticosteroid dose for disease control is acceptable until the day before the start of lymphodepletion
  • ELIGIBILITY FOR LYMPHODEPLETION CHEMOTHERAPY: Patients must have no active acute or chronic

Exclusion criteria

Exclusion Criteria:

  • Active disease requiring systemic therapy
  • Patients requiring therapy at a dose of 15 mg or more per day of prednisone or the equivalent; pulsed corticosteroid dose for disease control is acceptable
  • Patients who are (HIV) seropositive
  • Women who are pregnant or breastfeeding
  • Significant cardiovascular diseases within the past 6 months including uncontrolled congestive heart failure (> [NYHA] class II), myocardial infarction, unstable angina, or uncontrolled arrhythmia
  • History of severe immediate reaction to cyclophosphamide or fludarabine
  • History or presence of non-lymphoma central nervous system pathology, including seizures that are uncontrolled on anticonvulsant therapy (>= 1 seizure in the last year), paresis, aphasia, stroke, severe brain injuries, dementia, Parkinson disease, cerebellar disease, or psychosis
  • Treatment with any agent on a different clinical trial within 4 weeks prior to enrollment, unless the patient is documented to be unresponsive to the therapy and at least 3 half-lives have elapsed prior to enrollment
  • Treatment with any anti-CD19 or anti-CD20 antibody or antibody-drug conjugate therapy within 4 weeks before enrollment
  • Previous treatment with CD19-targeted CAR T cells that has resulted in ongoing B cell aplasia at the time of enrollment; patients that demonstrate recovery of normal B cells (>= 20 B cells/ul) by flow cytometry at any point 28 days or later after CD19 CAR T cell infusion will be considered to have functional loss of CD19 CAR T cells and are potentially eligible
  • Patients with systemic disease without radiologic evidence of CNS involvement and with isolated CSF involvement detectable by flow cytometry are eligible for enrollment in systemic disease cohorts if neurologically asymptomatic. CSF involvement is not an exclusion for patients enrolled as a primary or secondary CNS lymphoma.
  • Presence of active acute or chronic (GVHD)
  • Uncontrolled active infection (bacterial, fungal, viral, mycobacterial) not responding to treatment with intravenous antibiotics, antiviral or antifungal agents
  • Patients with concurrent known additional that is progressing and/or requires active treatment; exceptions include squamous or basal cell carcinoma of the skin and low grade prostate carcinoma (Gleason grade =\< 6). Maintenance anti-hormone therapies for breast or prostate cancers are allowed and are not considered active treatment
  • Patients with blood or transfusion within 1 week prior to signing Consent A, or with platelets \< 50,000/mm\^3, neutrophils \< 750/mm\^3, or \< 8.5 g/dL, unless the cytopenias are considered by the treating physician to be largely due to marrow involvement by lymphoma
Terms in these criteria, in plain language(26)

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.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

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.

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.

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.

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.

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.

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.

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.

FEV1

From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.

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.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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).

05

Study design

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

Study arms

  • Experimental
    Treatment (CD20-specific CAR T cell, chemotherapy)

    Patients undergo leukapheresis and may receive treatment after if needed for disease control. Patients then receive cyclophosphamide IV. Patients may also receive fludarabine IV. After 36-96 hours, patients receive CD20-specific CAR T cell infusion IV over 20-30 minutes.

    Biological: Chimeric Antigen Receptor T-Cell Therapy · Drug: Cyclophosphamide · Other: Laboratory Biomarker Analysis · Procedure: Leukapheresis · Drug: Fludarabine Phosphate

Interventions

  • BiologicalChimeric Antigen Receptor T-Cell Therapy

    Drug page: Chimeric Antigen Receptor T-cells

    Given CD20 CAR T cell IV

    Also known as: CAR T-cell therapy, CAR T Infusion, CAR T Therapy

  • Given IV

    Also known as: (-)-Cyclophosphamide, 2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrate, Carloxan, Ciclofosfamida, Ciclofosfamide, Cicloxal, Clafen, Claphene, CP monohydrate, CTX, CYCLO-cell, Cycloblastin, Cycloblastine, Cyclophospham, Cyclophosphamid monohydrate, Cyclophosphamidum, Cyclophosphan, Cyclophosphane, Cyclophosphanum, Cyclostin, Cyclostine, Cytophosphan, Cytophosphane, Cytoxan, Fosfaseron, Genoxal, Genuxal, Ledoxina, Mitoxan, Neosar, Revimmune, Syklofosfamid, WR- 138719

  • OtherLaboratory Biomarker Analysis

    Correlative studies

  • ProcedureLeukapheresis

    Undergo leukapheresis

    Also known as: Leukocytopheresis, Therapeutic Leukopheresis

  • Given IV

    Also known as: 2-F-ara-AMP, Beneflur, Fludara, Fludarabine-5''-Monophosphate, SH T 586

06

What researchers measure

Primary outcomes

  1. Dose-limiting Toxicities (DLT) Rate

    Will be graded by Common Terminology Criteria for Adverse Events version 4.0. Observed DLT rates will be summarized based on the DLT-Evaluable analysis set. Outcome reported as count of participants in each arm who experienced a DLT.

    Time frame: Up to 28 days

Secondary outcomes

  1. Complete Remission

    Will be assessed based on the Lugano criteria.

    Time frame: Up to 15 years

  2. Progression-free Survival (PFS)

    A Cox proportional hazards model will be used to evaluate PFS.

    Time frame: Duration from study enrollment to progression or death due to any cause (whichever comes first), assessed up to 15 years

  3. Overall Survival (OS)

    A Cox proportional hazards model will be used to evaluate OS.

    Time frame: Duration from study enrollment to death due to any cause, assessed up to 15 years

  4. Incidence of Adverse Events

    Will be assessed by National Cancer Institute Common Terminology Criteria for Adverse Events version 4.0.

    Time frame: Up to 15 years

07

Results

Posted Apr 16, 2025

Participant flow

Participant flow — Overall Study
MilestoneDose Level 0 of CD20 CAR T CellsDose Level 1 of CD20 CAR T CellsDose Level 2 of CD20 CAR T CellsDose Level 3 of CD20 CAR-T CellsDose Level 4 of CD20 CAR-T Cells
Started184631
Completed110520
Not completed074111

Outcome measures

PrimaryDose-limiting Toxicities (DLT) Rate

Will be graded by Common Terminology Criteria for Adverse Events version 4.0. Observed DLT rates will be summarized based on the DLT-Evaluable analysis set. Outcome reported as count of participants in each arm who experienced a DLT.

Time frame:
Up to 28 days
Reported as:
Number · participants
Dose-limiting Toxicities (DLT) Rate
participantsDose Level 0 of CD20 CAR T CellsDose Level 1 of CD20 CAR T CellsDose Level 2 of CD20 CAR T CellsDose Level 3 of CD20 CAR-T CellsDose Level 4 of CD20 CAR-T Cells
Dose-limiting Toxicities (DLT) Rate00000
SecondaryComplete Remission

Will be assessed based on the Lugano criteria.

Time frame:
Up to 15 years

Results for this outcome have not been posted.

SecondaryProgression-free Survival (PFS)

A Cox proportional hazards model will be used to evaluate PFS.

Time frame:
Duration from study enrollment to progression or death due to any cause (whichever comes first), assessed up to 15 years

Results for this outcome have not been posted.

SecondaryOverall Survival (OS)

A Cox proportional hazards model will be used to evaluate OS.

Time frame:
Duration from study enrollment to death due to any cause, assessed up to 15 years

Results for this outcome have not been posted.

SecondaryIncidence of Adverse Events

Will be assessed by National Cancer Institute Common Terminology Criteria for Adverse Events version 4.0.

Time frame:
Up to 15 years

Results for this outcome have not been posted.

Adverse events

Collected over Adverse Events and All-Cause Mortality were assessed up to 1 year after CAR T-cell infusion. No patients received more than one CAR T cell infusion, so AE assessment period was only 1 year after first and only CAR T infusion for all patients.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Dose Level 0 of CD20 CAR T Cells0/1 (0%)1/1 (100%)1/1 (100%)
Dose Level 1 of CD20 CAR T Cells2/8 (25%)2/8 (25%)8/8 (100%)
Dose Level 2 of CD20 CAR T Cells3/4 (75%)1/4 (25%)4/4 (100%)
Dose Level 3 of CD20 CAR-T Cells3/6 (50%)2/6 (33.3%)6/6 (100%)
Dose Level 4 of CD20 CAR-T Cells7/31 (22.6%)18/31 (58.1%)31/31 (100%)
Most frequent serious events
Showing 10 of 22
Most frequent serious events
EventDose Level 0 of CD20 CAR T CellsDose Level 1 of CD20 CAR T CellsDose Level 2 of CD20 CAR T CellsDose Level 3 of CD20 CAR-T CellsDose Level 4 of CD20 CAR-T Cells
Febrile neutropeniaBlood and lymphatic system disorders1/11/81/40/63/31
Cytokine release syndromeImmune system disorders0/11/80/42/612/31
PainGeneral disorders0/10/81/40/60/31
Depressed level of consciousnessNervous system disorders0/10/80/41/60/31
Pain in extremityMusculoskeletal and connective tissue disorders0/10/80/41/60/31
FeverGeneral disorders0/10/80/40/65/31
Lung infectionInfections and infestations0/11/80/40/62/31
Immune system disordersImmune system disorders0/10/80/40/62/31
Abdominal painGastrointestinal disorders0/10/80/40/61/31
General disorders and administration site conditions - Other, COVIDGeneral disorders0/10/80/40/61/31
Most frequent other events
Showing 10 of 104
Most frequent other events
EventDose Level 0 of CD20 CAR T CellsDose Level 1 of CD20 CAR T CellsDose Level 2 of CD20 CAR T CellsDose Level 3 of CD20 CAR-T CellsDose Level 4 of CD20 CAR-T Cells
Lymphocyte count decreasedInvestigations1/18/84/46/628/31
Neutrophil count decreasedInvestigations1/17/84/45/629/31
White blood cell decreasedInvestigations1/18/84/45/628/31
AnemiaBlood and lymphatic system disorders1/16/82/43/625/31
HypotensionVascular disorders1/14/82/41/610/31
AnorexiaMetabolism and nutrition disorders1/13/82/41/67/31
HeadacheNervous system disorders1/12/82/42/67/31
NauseaGastrointestinal disorders1/14/80/42/67/31
Cytokine release syndromeImmune system disorders1/11/80/40/66/31
FatigueGeneral disorders0/17/82/44/613/31

Baseline characteristics

Patients enrolled and treated on study.

Age, Continuous
Age, Continuous(years)Dose Level 0 of CD20 CAR T CellsDose Level 1 of CD20 CAR T CellsDose Level 2 of CD20 CAR T CellsDose Level 3 of CD20 CAR-T CellsDose Level 4 of CD20 CAR-T CellsTotal
Mean43 ± 061 ± 961 ± 859 ± 967 ± 864 ± 9
Sex: Female, Male
Sex: Female, Male(Participants)Dose Level 0 of CD20 CAR T CellsDose Level 1 of CD20 CAR T CellsDose Level 2 of CD20 CAR T CellsDose Level 3 of CD20 CAR-T CellsDose Level 4 of CD20 CAR-T CellsTotal
Female12121319
Male06341831
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Dose Level 0 of CD20 CAR T CellsDose Level 1 of CD20 CAR T CellsDose Level 2 of CD20 CAR T CellsDose Level 3 of CD20 CAR-T CellsDose Level 4 of CD20 CAR-T CellsTotal
Hispanic or Latino010012
Not Hispanic or Latino17462846
Unknown or Not Reported000022
Region of Enrollment
Region of Enrollment(participants)Dose Level 0 of CD20 CAR T CellsDose Level 1 of CD20 CAR T CellsDose Level 2 of CD20 CAR T CellsDose Level 3 of CD20 CAR-T CellsDose Level 4 of CD20 CAR-T CellsTotal
United States18463150
08

Study locations

1 site
09

References and documents

Publications

  • Ernst M, Oeser A, Besiroglu B, Caro-Valenzuela J, Abd El Aziz M, Monsef I, Borchmann P, Estcourt LJ, Skoetz N, Goldkuhle M. Chimeric antigen receptor (CAR) T-cell therapy for people with relapsed or refractory diffuse large B-cell lymphoma. Cochrane Database Syst Rev. 2021 Sep 13;9(9):CD013365. doi: 10.1002/14651858.CD013365.pub2. PubMed 34515338 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 22, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03277729
Collaborators
Mustang Bio
Responsible party
Mazyar Shadman (Associate Professor, Fred Hutchinson Cancer Center) — Principal investigator
First posted
Sep 11, 2017
Start date
Dec 5, 2017
Primary completion
Mar 29, 2024
Completion
Mar 2039 (estimated)
Results posted
Apr 16, 2025
Last update
Jun 22, 2026

Study contacts

Mazyar Shadman
principal investigator · Fred Hutch/University of Washington Cancer Consortium

Oversight

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

Not currently enrolling

This study is active, not recruiting, as verified in May 2026. You cannot join it, but the record below documents what was studied.

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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.

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

Studies of the drugs tested here: Chimeric Antigen Receptor T-cells · Cyclophosphamide · Fludarabine phosphate

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