Safety and Efficacy Study of Anti-PD1 Armored CD19 CAR-T Cells in Adult Subjects With Relapsed or Refractory Diffuse Large B-cell Lymphoma

January 26, 2026 updated by: Jiangsu Topcel-KH Pharmaceutical Co., Ltd.

A Prospective, Open-label and Single-arm Study of Anti-PD1 Armored CD19 CAR-T Cells in Adult Subjects With Relapsed or Refractory Diffuse Large B-cell Lymphoma

The purpose of this study is to investigate the safety and tolerability of anti-PD1 armored CD19 CAR-T Cells in adult subjects with relapsed or refractory diffuse large B-cell lymphoma.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is a prospective, open-label, single-arm clinical study to evaluate the safety, tolerability of anti-PD1 armored CD19 CAR-T Cells in adult subjects with relapsed or refractory diffuse large B-cell lymphoma (r/r DLBCL).The study plans to explore across three dose levels (1.00 × 10^6, 3.00 × 10^6, 9.00 × 10^6 CAR+ T cells/kg), and 6.00×10^8 CAR+T cells as maximum dose, aiming to evaluate the safety, tolerability of anti-PD1 armored CD19 CAR-T Cells in r/r DLBCL, explore Maximum Tolerated Dose (MTD) and determine the recommended dose for Phase II. Besides, efficacy, pharmacokinetics and persistence profile of CAR-T cells are also study objectives.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • 1. Subjects voluntarily participate in clinical research and sign informed consent.
  • 2. Adult subjects (age ≥18 ) with relapsed or refractory diffuse large B-cell lymphoma: a) failure to achieve CR after 6 cycles, or PR after 3 cycles, of first-line therapy, or achieve CR after first-line therapy but relapse within 12 months; b) achieve CR after systemic treatment, but are refractory or relapsed, and no plan to transplant, or prepare for transplantation but cannot meet transplantation criteria after second-line therapy; c) not achieve CR after at least two courses of second-line treatment (including autologous stem cell transplantation).
  • 3. Expected survival ≥ 3 months.
  • 4. At least one measurable lesion as per revised IWG response criteria for malignant lymphom (2014 Lugano criteria).
  • 5. CD19 positive expression are detected on tumor cells of subjects by flow cytometry or immunohistochemistry.
  • 6. ECOG score ≤ 2.
  • 7. Subjects with adequate organ functions prior to enrollment, meet the following laboratory values:
  • Renal function: serum creatinine ≤ 1.5 × ULN or estimated glomerular filtration rate (eGFR) ≥ 60 mL/min/1.73 m².
  • Hepatic function: Serum alanine aminotransferase (ALT) ≤ 5 × age-specific ULN and total bilirubin ≤ 2.0 mg/dL, except in subjects with Gilbert-Meulengracht syndrome. If total bilirubin ≤ 3.0 × ULN and direct bilirubin ≤ 1.5 × ULN, subjects with Gilbert-Meulengracht syndrome are included.
  • Pulmonary reserve: ≤ Grade 1 dyspnea and oxygen saturation >95% on room air.
  • 8. Stable hemodynamics and left ventricular ejection fraction (LVEF) ≥ 45 % assessed by echocardiography or multi-gated radionuclide angiography (MUGA).
  • 9. Adequate bone-marrow reserve without blood transfusion as defined by:
  • Absolute neutrophil count (ANC) ≥ 1 x 10^9/L.
  • Absolute lymphocyte count (ALC) ≥ 0.1 x 10^9/L.
  • Platelets ≥ 50 x 10^9/L.
  • Hemoglobin >80g/L.
  • 10. In the investigator's judgment, subjects' general condition and all biochemical values are either normal or sufficiently compensated to receive lymphodepletion and CAR-T cell therapy.

Exclusion Criteria:

  • 1. Women who are pregnant or breastfeeding, or planned pregnancy within 6 months.
  • 2. Infectious disease(HIV, Active Tuberculosis ect.).
  • 3. Active infection: hepatitis B, hepatitis C.
  • 4. Abnormal vital signs or refuse to receive examination.
  • 5. Subjects with psychiatric or psychological disorders are unable to complete treatment or efficacy assessment.
  • 6.History of severe hypersensitivity or known hypersensitivity to IL-2.
  • 7. Systemic or local severe infection requiring antimicrobial therapy.
  • 8. Significant dysfunction of vital organs (heart, lung, brain, kidney, etc.), or in the investigator's judgment, subjects are unable to be enrolled with any other condition.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Anti-PD1 armored CD19 CAR-T cells treatment arm
Subjects will be administrated with Anti-PD1 armored CD19 CAR-T cells after lymphocyte depletion by fludarabine and cyclophosphamide.
Biological: Anti-PD1 armored CD19 CAR-T cells
Anti-PD1 armored CD19 CAR-T cells, single intravenous infusion

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence of dose-limiting toxicity (DLT)
Time Frame: 1 month after injection
Dose-limiting toxicity for each subject
1 month after injection
AE/SAE
Time Frame: 1 month, 3 months, 6 months, 12 months after injection
Incidence and severity of adverse events (AE), and serious adverse event (SAE)
1 month, 3 months, 6 months, 12 months after injection

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Objective response rate (ORR)
Time Frame: 1 month, 3 months, 6 months, 9 months, 12 months after injection
Proportion of patients whose tumor volume has reached a predetermined value and can maintain a minimum time limit, including complete response and partial response patients
1 month, 3 months, 6 months, 9 months, 12 months after injection
Overall survival (OS)
Time Frame: 1 month, 3 months, 6 months, 9 months, 12 months after injection
Defined as the time from the date of first infusion to death due to any cause
1 month, 3 months, 6 months, 9 months, 12 months after injection
Duration of response (DOR)
Time Frame: 1 month, 3 months, 6 months, 9 months, 12 months after injection
The time from the date of first response (PR or better) to the date of disease progression after infusion
1 month, 3 months, 6 months, 9 months, 12 months after injection
Progression-free survival (PFS)
Time Frame: 1 month, 3 months, 6 months, 9 months, 12 months after injection
The time from first infusion to the date of progression or death
1 month, 3 months, 6 months, 9 months, 12 months after injection

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Jiangsu Topcel-KH Pharmaceutical Co., Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 1, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 18, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 18, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 26, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 28, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 26, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • TH-RD09-02

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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