A Modular, Phase I/II Study to Evaluate CT204V-CD19 x CD20 in Participants With Relapsed or Refractory B-Cell Malignancies. (CT204V)

November 6, 2026 updated by: AstraZeneca

A Modular, Phase I/II, Open-label, Single-arm, Multicenter, Dose Escalation and Dose Expansion Study to Evaluate the Safety, Tolerability, Cellular Kinetics, Pharmacodynamics, and Efficacy of CT204V-CD19 × CD20, an In Vivo Lentiviral Vector Gene Therapy Generating Dual Targeting Anti-CD19/CD20 Chimeric Antigen Receptor (CAR)-T Cells in Participants With Relapsed or Refractory B-Cell Malignancies

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics and efficacy of CT204V-CD19 × CD20, a dual targeting in vivo gene therapy generating anti-CD19/CD20 CAR-T cells in participants with R/R B-cell malignancies.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet 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.

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.
160

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 2
  • 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.

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • * Participants must be at least 18 years of age.
  • * Confirmed expression of CD19 and/or CD20.
  • * Histologically confirmed and measurable disease for all disease subtypes.
  • * ECOG performance status 0 or 1.
  • * Adequate organ and bone marrow function.
  • * Body weight of at least 45 kg.
  • * Contraceptive/barrier requirement consistent with local regulations.
  • * Capable of giving signed informed consent.

Exclusion Criteria:

  • * History of malignancy unless disease-free for ≥ 3 years, with exceptions.
  • * Active CNS involvement by malignancy.
  • * History of cardiac lymphoma involvement.
  • * Richter's transformation of CLL.
  • * Ongoing or impending oncologic emergency.
  • * Active uncontrolled bacterial, viral, or fungal infection.
  • * Active hepatitis B or C.
  • * Positive HIV test.
  • * Positive HTLV-1/2 antibody test.
  • * Ongoing non-hematologic toxicities from prior therapy.
  • * History of any grade IEC-HS, Grade ≥ 3 CRS, or Grade ≥ 2 NT during prior CAR-T cell therapy.
  • * History of allogeneic stem cell or solid organ transplantation.
  • * Primary immunodeficiency disorder.
  • * History of specific autoimmune diseases.
  • * Significant neurological or psychiatric conditions.
  • * Receipt of prior treatment containing VSV-G.
  • * Receipt of certain therapies within specified washout periods.

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: CT204V-CD19 × CD20

Participants will receive CT204V-CD19 × CD20, an In Vivo Lentiviral Vector Gene Therapy, generating dual targeting anti-CD19/CD20 Chimeric Antigen Receptor (CAR)-T cells.
Drug: CT204V-CD19 × CD20

Experimental

Other Names:
  • CT204V

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
Number of Adverse Events(AEs)/Serious Adverse Events (SAEs), Phase 1 of the study.
Time Frame: Up to 15 years

Incidence and severity of Adverse Events(AEs)/Serious Adverse Events (SAEs), Phase 1 of the study.
Up to 15 years
Number of Dose-Limiting Toxicities (DLTs) events during dose escalation, Phase 1 of the study.
Time Frame: Up to 28 days.

Incidence of Dose-Limiting Toxicities (DLTs) during dose escalation, Phase 1 of the study.
Up to 28 days.
Number of AEs leading to dose reduction, withdrawal, interruption, Phase 1 of the study.
Time Frame: Up to 1 year.

Incidence of AEs leading to dose reduction, withdrawal, interruption, Phase 1 of the study.
Up to 1 year.
Number of AEs leading to death, Phase 1 of the study.
Time Frame: Up to 15 years

Incidence of AEs leading to death, Phase 1 of the study.
Up to 15 years
Number of AESI (adverse events of special interest), Phase 1 of the study.
Time Frame: Up to 15 years

Incidence of AESI (adverse events of special interest), Phase 1 of the study.
Up to 15 years
Objective Response Rate (Complete Response+Partial Response) per Lugano Classification, Phase 2 of the study.
Time Frame: Up to 24 months.

To assess the efficacy based on ORR (CR+PR) events.
Up to 24 months.
Complete Response (CR) rate, Phase 2 of the study.
Time Frame: Up to 24 months.

To assess the efficacy based on CR rate.
Up to 24 months.
Best Overall Response (BOR), Phase 2 of the study.
Time Frame: Up to 24 months.

To assess the efficacy based on BOR rate.
Up to 24 months.
Duration of Response (DoR), Phase 2 of the study.
Time Frame: Up to 24 months.

To assess the efficacy based on DoR rate.
Up to 24 months.
Duration of Complete Response (DoCR), Phase 2 of the study.
Time Frame: Up to 24 months.

To assess the efficacy based on DoCR rate.
Up to 24 months.

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 (Complete Response+Partial Response) per Lugano Classification, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity of CT204V. ORR (CR+PR) per Lugano Classification based on ORR, as assessed by the investigator.
Up to 24 months post-infusion.
Viral vector PK parameter AUClast, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood per PK parameter AUClast, as assessed by the investigator.
Up to 24 months post-infusion.
Cellular Kinetics (CK) of CT204V CAR transgene parameter AUC0-28/AUClast, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V CAR transgene levels in peripheral blood per CAR transgene PK parameter AUC0-28/AUClast, as assessed by the investigator.
Up to 24 months post-infusion.
Incidence of Anti-Drug Antibodies (ADA), Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the humoral immunogenicity of CT204V and its vector components based on incidence of humoral immunogenicity (ADA) against CT204V and/or vector components, as assessed by the investigator.
Up to 24 months post-infusion.
Frequency and severity of AEs/SAEs
Time Frame: Up to 15 years

To further characterize the safety of CT204V with selected prophylaxis regimen.
Up to 15 years
Complete Response (CR) rate, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity of CT204V per CR rate, as assessed by the investigator.
Up to 24 months post-infusion.
Best Overall Response (BOR), Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity of CT204V based on BOR, as assessed by the investigator.
Up to 24 months post-infusion.
Duration of Response (DoR), Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity of CT204V based on DoR. as assessed by the investigator.
Up to 24 months post-infusion.
Duration of Complete Response (DoCR), Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity ofCT204V based on DoCR, as assessed by the investigator.
Up to 24 months post-infusion.
Viral vector PK parameter Cmax/Clast, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood per PK parameter Cmax/Clast, as assessed by the investigator.
Up to 24 months post-infusion.
Viral vector PK parameter Tmax/Tlast, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood per PK parameter Tmax/Tlast, as assessed by the investigator.
Up to 24 months post-infusion.
Cellular Kinetics (CK) of CT204V CAR transgene parameter Cmax/Clast, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V CAR transgene levels in peripheral blood per CAR transgene PK parameter Cmax/Clast, as assessed by the investigator.
Up to 24 months post-infusion.
Cellular Kinetics (CK) of CT204V CAR transgene parameter Tmax/Tlast, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V CAR transgene levels in peripheral blood per CAR transgene PK parameter Tmax/Tlast.
Up to 24 months post-infusion.
Quantification of CT204V viral vector genomes (viral titer) in peripheral blood, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood, central read, central read.
Up to 24 months post-infusion.
Quantification of CT204V CAR transgene levels (copies/μg gDNA) in peripheral blood, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V CAR transgene levels (copies/μg gDNA) in peripheral blood, as assessed by the investigator.
Up to 24 months post-infusion.
Cellular Kinetics (CK) of CT204V CAR transgene parameter AUC0-28/AUClast, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V CAR transgene levels in peripheral blood per CAR transgene PK parameter AUC0-28/AUClast, central read.
Up to 24 months post-infusion.
Incidence of Anti-Drug Antibodies (ADA), Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the humoral immunogenicity of CT204V and its vector components based on incidence of humoral immunogenicity (ADA) against CT204V and/or vector components, central read.
Up to 24 months post-infusion.
Complete Response (CR) rate, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity of CT204V per CR rate, central read.
Up to 24 months post-infusion.
Best Overall Response (BOR), Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity of CT204V based on BOR, central read.
Up to 24 months post-infusion.
Duration of Response (DoR), Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity of CT204V based on DoR, central read.
Up to 24 months post-infusion.
Duration of Complete Response (DoCR), Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity ofCT204V based on DoCR, central read.
Up to 24 months post-infusion.
Viral vector PK parameter Cmax/Clast, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood per PK parameter Cmax/Clast, central read.
Up to 24 months post-infusion.
Viral vector PK parameter Tmax/Tlast, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood per PK parameter Tmax/Tlast, central read.
Up to 24 months post-infusion.
Cellular Kinetics (CK) of CT204V CAR transgene parameter Cmax/Clast, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V CAR transgene levels in peripheral blood per CAR, transgene PK parameter Cmax/Clast, central read
Up to 24 months post-infusion.
Cellular Kinetics (CK) of CT204V CAR transgene parameter Tmax/Tlast, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood, central read, central read.
Up to 24 months post-infusion.
Viral vector PK parameter AUClast, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood per PK parameter AUClast, central read.
Up to 24 months post-infusion.
Objective Response Rate (Complete Response+Partial Response) per Lugano Classification, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

To evaluate the preliminary antitumor activity of CT204V. ORR (CR+PR) per Lugano Classification based on ORR, central read.
Up to 24 months post-infusion.
Quantification of CT204V CAR transgene levels (copies/μg gDNA) in peripheral blood, Phase 2 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V CAR transgene levels (copies/μg gDNA) in peripheral blood, central read.
Up to 24 months post-infusion.
Quantification of CT204V viral vector genomes (viral titer) in peripheral blood, Phase 1 of the study.
Time Frame: Up to 24 months post-infusion.

Quantification of CT204V viral vector genomes (viral titer) in peripheral blood, central read, as assessed by the investigator.
Up to 24 months post-infusion.

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.
AstraZeneca

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.
November 9, 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.
October 15, 2029

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.
October 15, 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).
November 6, 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.
November 6, 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.
November 12, 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.
November 12, 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.
November 6, 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.
November 1, 2026

More Information

Terms related to this study

Keywords

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.
  • R1055C00001

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

IPD Sharing Time Frame

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA PhRMA Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

IPD Sharing Access Criteria

When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP

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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