GT719 Injection for the Treatment of Recurrent/Refractory CD19 Positive Adult B-cell Malignancies

September 10, 2025 updated by: Grit Biotechnology

A Single-arm, Open-label, Phase I/II Clinical Study of GT719 Injection for Recurrent/Refractory CD19 Positive Adult B-cell Malignancies

This study is a prospective single-arm open-labled phase I/II clinical trial, including dose escalation and expansion phase, aims to evaluate the safety, efficacy, and cellular pharmacokinetics of GT719 Injection in relapsed/refractory CD19 positive adult B-cell non Hodgkin lymphoma (B-NHL) and B-acute lymphoblastic leukemia (B-ALL) patients. A total of 46 subjects (anticipated) will be enrolled in this study.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

46

Phase

  • 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 Locations

  • China
    • Tianjin Municipality
      • Tianjin, Tianjin Municipality, China
        • Recruiting
        • Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences
        • Principal Investigator:
          • Dehui Zou
        • Contact:

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

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Voluntarily enrolled in the study, signed an informed consent form, and willing and able to comply with the study protocol.

    -

  2. Eastern Collaborative Oncology Group (ECOG) physical fitness status score of 0 or 1.

    -

  3. CD19 positivity confirmed by flow cytometry and/or histopathology.

Exclusion Criteria:

  1. Primary immunodeficiency.

    -

  2. History of symptomatic deep vein thrombosis or pulmonary embolism within 6 months prior to enrollment, requiring systemic anticoagulant therapy.

    -

  3. Any medical condition that may interfere with the evaluation of the safety or effectiveness of research and treatment;

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
Intervention / Treatment
Experimental: GT719 Injection treatment group
GT719 Injection
Biological: GT719 Injection
GT719 Injection

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Incidence and severity of adverse events per CTCAE 5.0
Time Frame: From infusion to the end of the treatment at 12 months
To characterize the safety profile of GT719 in patients with recurrent/refractory CD19 positive adult B-cell malignant hematological tumor as measured by the incidence and severity of adverse events per CTCAE 5.0
From infusion to the end of the treatment at 12 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Objective response rate
Time Frame: 28 days post the first infusion, and follow-ups at Month 2, Month 3, Month 6, Month 9 and Month 12
To evaluate efficacy parameters such as objective response rate(ORR) assessed by the Investigator
28 days post the first infusion, and follow-ups at Month 2, Month 3, Month 6, Month 9 and Month 12

Collaborators and Investigators

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

Sponsor

Grit Biotechnology

Collaborators

Institute of Hematology & Blood Diseases Hospital, China

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 (Actual)

April 18, 2025

Primary Completion (Estimated)

April 17, 2028

Study Completion (Estimated)

April 17, 2028

Study Registration Dates

First Submitted

April 22, 2025

First Submitted That Met QC Criteria

April 22, 2025

First Posted (Actual)

April 29, 2025

Study Record Updates

Last Update Posted (Estimated)

September 16, 2025

Last Update Submitted That Met QC Criteria

September 10, 2025

Last Verified

September 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GRIT-CD-CHN-719-001-056

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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