A Randomized, Open-Label, Multicenter Phase III Clinical Study of JS203 Plus Chemotherapy Versus Rituximab Plus Chemotherapy in Patients With Relapsed/Refractory Diffuse Large B-Cell Lymphoma

September 8, 2026 updated by: Shanghai Junshi Bioscience Co., Ltd.
This study will evaluate the efficacy and safety of glofitamab in combination with gemcitabine plus oxaliplatin (JS203-GemOx) compared with rituximab in combination with gemcitabine plus oxaliplatin (R-GemOx) in patients with R/R DLBCL.

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.

Detailed Description

A Randomized Open-Label Multicenter Phase III Clinical Trial Comparing JS203 Combined With gemcitabine plus oxaliplatin (JS203-GemOx) Versus rituximab in combination with gemcitabine plus oxaliplatin (R-GemOx) in Patients With Relapsed/Refractory Diffuse Large B-Cell Lymphoma

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.
282

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 3

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

  • China
    • Beijing Municipality
      • Beijing, Beijing Municipality, China, 100142
        • Beijing Cancer Hospital
        • Contact:
        • Principal Investigator:
          • Yuqin Song, Ph.D

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:

  • Patients must meet all of the following inclusion criteria to be enrolled:
  • Age range: 18 to 75 years old (inclusive), both male and female are acceptable
  • ECOG: 0-1；
  • One of the confirmed histologies below with CD20-positivity:

DLBCL, not otherwise specified (NOS), including de novo or histologically transformed from follicular lymphoma (FL)/Marginal Zone Lymphoma(MZL) "Double-hit" or "triple-hit" DLBCL , including de novo or histologically transformed from FL/MZL FL Grade 3B T-cell/histiocyte-rich large B-cell lymphoma

  • At least one measurable lesion meeting the criteria specified in the Lugano 2014 response assessment；
  • Acceptable organ function at screening；

Exclusion Criteria:

  • A history of severe allergy to monoclonal antibody therapy (or recombinant antibody-related fusion protein)；
  • Previously received CD20-CD3 bispecific antibody treatment；
  • Previous allogeneic hematopoietic stem cell transplantation；
  • Previous solid organ transplantation
  • History of autoimmune diseases
  • Patients with a history of macrophage activation syndrome (MAS)/ hemophagocytic lymphohistiocytosis (HLH)
  • Patients with a history of progressive multifocal leukoencephalopathy (PML)
  • A known or suspected history of CNS lymphoma (including primary or secondary)
  • There is pleural effusion, peritoneal effusion or pericardial effusion that requires treatment (such as puncture or drainage)

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: Randomized
  • Interventional Model: Parallel 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: JS203+Gemox
Combination product: JS203 in combination with gemcitabine and oxaliplatin
gemcitabine and oxaliplatin 8 cycles (Q3W) and JS203 (21 days/cycle) Cycle 1 QW,Cycle 2 and therafter Q3W for up to 1 year
Active Comparator: Rituximab+Gemox
Combination product: Rituximab in combination with gemcitabine and oxaliplatin
Rituximab and gemcitabine and oxaliplatin 8 cycles (Q3W)

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
Overall survival (OS)
Time Frame: up to approximately 24 months
Overall survival (OS) evaluated based on 2014 Lugano criteria
up to approximately 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 (ORR)
Time Frame: up to approximately 12 months
Objective response rate (ORR) based on 2014 Lugano criteria
up to approximately 12 months
complete response (CR)
Time Frame: up to approximately 12 months
The complete response rate (CR) evaluated based on 2014 Lugano criteria
up to approximately 12 months
Duration of response (DoR)
Time Frame: up to approximately 12 months
Duration of response (DoR) evaluated based on 2014 Lugano criteria
up to approximately 12 months
Duration of complete response (DoCR)
Time Frame: up to approximately 12 months
Duration of complete response (DoCR) evaluated based on 2014 Lugano criteria
up to approximately 12 months
Adverse events (AE)
Time Frame: up to approximately 15 months
Incidence and severity of all adverse events (AE) that occurred during the clinical trial
up to approximately 15 months
PK
Time Frame: up to approximately 15 months
The serum drug concentration of JS203
up to approximately 15 months
ADA
Time Frame: up to approximately 15 months
The incidence and titer of the anti-drug antibody (ADA) of JS203
up to approximately 15 months
NAb
Time Frame: up to approximately 15 months
The incidence of neutralizing antibodies (NAb) of JS203 (if applicable)
up to approximately 15 months

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.
Shanghai Junshi Bioscience 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.
September 24, 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.
November 30, 2028

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.
February 28, 2030

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).
September 2, 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.
September 8, 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.
September 9, 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.
September 9, 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.
September 8, 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.
September 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.
  • JS203-003-III-DLBCL

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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