CAR-T Followed by Bispecific Antibodies

May 21, 2026 updated by: Abramson Cancer Center at Penn Medicine

Phase II Study of Dual Targeting of CD19 and CD20 Antigens Using Sequential CD19-directed CAR-T Cells Followed by Mosunetuzumab or Glofitamab in Relapsed or Refractory Diffuse Large B-cell or Transformed Follicular Lymphomas

The research study is being conducted to test the safety and effectiveness of the experimental drug mosunetuzumab (Cohort 1) or obinutuzumab and glofitamab (Cohort 2) when given after CAR (genetically modified) T cells. The study is for patients who have already received a CAR T-cell infusion. Some patients who join the study will receive mosunetuzumab, other patients later in the study may receive a different experimental drug (glofitamab, in combination with obinutuzumab).

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.

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.
23

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

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 Contact Backup

Study Locations

  • United States
    • Nebraska
      • Omaha, Nebraska, United States, 68198
        • Recruiting
        • University of Nebraska Medical Center
        • Contact:
        • Sub-Investigator:
          • Robert Gregory Bociek, MD
        • Sub-Investigator:
          • Christopher D'Angelo, MD
        • Sub-Investigator:
          • Snegha Ananth, MD
        • Contact:
        • Sub-Investigator:
          • Julie Vose, MD
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • Recruiting
        • Abramson Cancer Center of The University of Pennsylvania
        • Contact:
        • Principal Investigator:
          • Stephen J. Schuster, MD
        • Sub-Investigator:
          • Elise A. Chong, MD
        • Sub-Investigator:
          • Jakub Svoboda, MD
        • 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

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

Description

Inclusion Criteria:

  • Life expectancy of at least 12 weeks
  • History of relapsed or refractory large B-cell lymphoma (including transformed follicular lymphoma, and follicular lymphoma Grade 3B) who have relapsed after or failed to respond to at least one prior standard systemic treatment regimen that contains an anthracycline and at least one containing an anti-CD20-directed therapy and for whom there is no available therapy expected to improve survival (e.g., standard chemotherapy, autologous or allogeneic stem cell transplant).
  • PET/CT scan (preferred), diagnostic CT scan, or MRI prior to CAR-T cell therapy, with at least one bi-dimensionally measurable lesion (≥ 1.5 cm for nodal lesion or ≥ 1cm for extra-nodal lesions in largest dimension by low-dose computerized tomography [CT] scan with FDG-uptake ≥ liver); this imaging must have been obtained within 56 days of receiving CAR T cell therapy.
  • PET/CT scan (preferred), diagnostic CT scan, or MRI with at least one bi-dimensionally measurable lesion (≥ 1.5 cm for nodal lesion or ≥ 1cm for extra-nodal lesions in largest dimension by low-dose computerized tomography [CT] scan with FDG-uptake ≥ liver); this imaging documenting measurable disease must be obtained at least day +28 after CAR T cell infusion and prior to cycle 1 day 1.
  • Be at least 30 days after CAR T-cell infusion at time of study enrollment.
  • Adequate laboratory studies,
  • Ability and willingness to take proper contraceptive precautions

Exclusion Criteria:

  • Had > Grade 3 cytokine release syndrome (CRS) by ASTCT criteria after CAR-T therapy or who have unresolved CRS after CAR-T therapy
  • Had ≥ grade 2 neurologic toxicity by ASTCT criteria after CAR-T therapy or who have active neurologic toxicity after CAR-T therapy
  • Inability to comply with protocol-mandated hospitalization and activities restrictions in the investigators' decision
  • Pregnant or lactating, or intending to become pregnant during the study or within 3 months after the last dose of bispecific antibody or 18 months of obinutuzumab, whichever comes later
  • Prior solid organ transplantation
  • Active systemic autoimmune disease or other disease requiring chronic immunosuppressive therapy
  • History of confirmed progressive multifocal leukoencephalopathy (PML)
  • History of severe allergic or anaphylactic reactions to monoclonal antibody therapy (or recombinant antibody-related fusion proteins)
  • History of other malignancy that could affect compliance with the protocol or interpretation of results
  • Significant cardiovascular disease such as New York Heart Association Class III or IV cardiac disease, myocardial infarction within the last 6 months, unstable arrhythmias, or unstable angina)
  • Significant active pulmonary disease (e.g., bronchospasm and/or obstructive pulmonary disease) requiring oxygen or corticosteroid use.
  • Known active bacterial, viral, fungal, mycobacterial, parasitic, or other infection (excluding fungal infections of nail beds) at study enrollment, or any major documented infection requiring treatment with IV antibiotics or hospitalization within 2 weeks prior to first mosunetuzumab or glofitamab administration. Empiric or prophylactic antibiotics administered during neutropenia or neutropenic fever without microbiologic evidence of infection do not exclude patients.
  • Recent major surgery within 4 weeks prior to first mosunetuzumab or glofitamab administration
  • Active or chronic infection(s) would have increased risks for toxicity if treated with bispecific antibody therapy, thus will be excluded.
  • Administration of a live, attenuated vaccine within 4 weeks before first dose of study treatment or anticipation that such a live attenuated vaccine will be required during the study
  • Received systemic immunosuppressive medications (including but not limited to cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumor necrosis factor agents) with the exception of corticosteroid treatment < 20 mg/day prednisone or equivalent within 2 weeks prior to first dose of bispecific antibody
  • History of drug or alcohol abuse within 12 months prior to screening in the investigator's judgment
  • Any serious medical condition or abnormality in clinical laboratory tests that, in the investigator's and/or Medical Monitor's judgment, precludes the patient's safe participation in and completion of the study, or which could affect compliance with the protocol or interpretation of results

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: Non-Randomized
  • Interventional Model: Sequential 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: Cohort 1
Participants receive mosunetuzumab 60 mg for cycles 1 and 2 (although fractionated for cycle 1), and 30 mg for all subsequent cycles after standard-of-care therapy with CD19-directed CAR T-cells
Drug: mosunetuzumab
1 mg IV on Cycle 1 Day 1; 2 mg IV Cycle 1 Day 8; 60 mg IV Cycle 1 Day 15; 60 mg IV on Cycle 2 Day 1 and then 30 mg IV every 21 days beginning Cycle 2 Day 1 through Cycle 17.
Other Names:
  • RO7030816
  • BTCT4465A
  • Lunsumio
Experimental: Cohort 2
Participants receive obinutuzumab (1000 mg for each subject) and glofitamab after standard-of-care therapy with CD19-directed CAR T-cells. The dose of glofitamab for each subject will be 30 mg, other than for cycle 1, which will be 12.5 mg glofitamab fractionated over two weeks.
Drug: glofitamab
2.5 mg IV Cycle 1 Day 8; 10 mg IV Cycle 1 Day 15 then 30 mg every 21 days beginning Cycle 2 Day 1 through Cycle 12
Other Names:
  • RO7082859
  • CD20 TCB
Drug: obinutuzumab
1000 mg IV on Cycle 1 Day 1.
Other Names:
  • Gazyva
  • RO5072759
  • GA101
  • Gazyvaro
  • huMAb

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
Assessment of the percentage of subjects who experience non-hematologic dose limiting toxicity associated with early administration of glofitimab following SOC CAR-T Cell therapy.
Time Frame: 63 days from the date of first infusion of glofitimab

Non-hematologic DLTs include the following: unexpected ≥grade 3 non-hematologic that is at least possibly related to the study drug, any grade 3 event that does not improve to ≤ grade 2 within 72 hours, any grade 3 AST, ALT or total bilirubin that lasts more than 72 hours in the absence of other causes, ≥ grade 3 neurotoxicity or seizure of any grade.

Cytokine Relsease Syndrome: CRS grade 4, Grade 3 CRS that does not improve to ≤ grade 2 within 72 hours.

Grade 1: Temperature ≥ 38°C, no hypotension, no hypoxia. Grade 2: Temperature ≥ 38°C, hypotension not requiring vasopressors and/or hypoxia requiring low flow nasal cannula. Grade 3: Temperature ≥ 38°C, hypotension requiring a vasopressor and/or requiring high flow oxygen. Grade 4: Temperature ≥ 38°C, hypotension requiring multiple vasopressor and/or requiring positive pressure, intubation or mechanical ventilation.
63 days from the date of first infusion of glofitimab
Assessment of the percentage of subjects who achieve a complete metabolic response at 24 weeks from date of first infusion as measured by Cheson 14 (ie Lugano) criteria
Time Frame: 24 weeks from date of first infusion of investigational agent
Complete response will be assessed using Cheson 2014 or Lugano criteria, utilizing simple 5 point score (Deauville score). For this study complete response will be a score of 1 (no uptake), 2 (uptake ≤ mediastinum), or 3 (uptake >mediastinum but ≤ liver, with no new lesions, and no FDG-uptake in the bone marrow, that is not expected (i.e. due to growth factors or therapy
24 weeks from date of first infusion of investigational agent

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
Determine Response Duration
Time Frame: from time of first response assessment to up to five years from last dose of bispecific antibody therapy
Average length of response in months of any partial or complete metabolic responses
from time of first response assessment to up to five years from last dose of bispecific antibody therapy

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.
Abramson Cancer Center at Penn Medicine

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Genentech, Inc.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Stephen J. Schuster, MD, University of Pennsylvania

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)

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 5, 2021

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.
December 31, 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.
December 31, 2028

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).
May 7, 2021

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.
May 14, 2021

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.
May 17, 2021

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.
May 26, 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.
May 21, 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.
May 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.
  • UPCC 48420

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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