Trials / Recruiting

RecruitingNCT06854159

Odronextamab for the Treatment of Relapsed and Refractory Diffuse Large B-cell Lymphoma Before and After Chimeric Antigen Receptor T-cell Therapy

A Phase 2 Study of Odronextamab in Relapsed/ Refractory (R/R) Diffuse Large B-Cell Lymphoma (DLBCL) Before and After Chimeric Antigen Receptor (CAR) T-Cell Therapy

Status: Recruiting
Phase: Phase 2
Study type: Interventional
Enrollment: 34 (estimated)

Sponsor: Joseph Tuscano · Academic / Other
Sex: All
Age: 18 Years
Healthy volunteers: Not accepted

Summary

This phase II trial tests how well odronextamab works before and after standard of care (SOC) chimeric antigen receptor (CAR) T-cell therapy in treating patients with diffuse large B-cell lymphoma (DLBCL) that has come back after a period of improvement (relapsed) or that has not responded to previous treatment (refractory). CAR-T cell therapy is the SOC treatment most patients receive when other treatments have failed. CAR-T cell therapy is a type of treatment in which a patient's T cells (a type of immune system cell) are changed in the laboratory so they will attack cancer cells. T cells are taken from a patient's blood. Then the gene for a special receptor that binds to a certain protein on the patient's cancer cells is added to the T cells in the laboratory. The special receptor is called a CAR. Large numbers of the CAR T cells are grown in the laboratory and given to the patient by infusion for treatment of certain cancers. Odronextamab is a monoclonal antibody that is called bispecific, as it individually targets 2 cell proteins, CD20 and CD3. Proteins are part of each cell in the body, which work together like little machines for the cell to function. CD20 is a protein that is found on the surface of both normal B-cells and B-cells that make up certain cancers, like DLBCL. CD3 is a protein that is found on the surface of T cells. T-cells and normal B-cells are types of white blood cells in the body and are a part of the immune system that fights infections. Odronextamab is designed to help T-cells find and kill the B-cells including the cancer cells in DLBCL. Giving odronextamab before and after CAR T-cell therapy may improve response in patients with relapsed or refractory DLBCL.

Detailed description

PRIMARY OBJECTIVE: I. To assess anti-tumor activity of odronextamab + CAR T-cell therapy in in patients with relapsed or refractory (R/R) DLBCL. SECONDARY OBJECTIVES: I. To evaluate the toxicities of odronextamab + CAR T-cell therapy in patients with R/R DLBCL. II. To further assess anti-tumor activity of odronextamab + CAR T-cell therapy in patients with R/R DLBCL. OUTLINE: Patients receive odronextamab intravenously (IV) over 1-4 hours on days 1, 2, 8, 9, 15, and 16 of cycle 1, on days 1, 8, and 15 of cycles 2-4 then on days 1 and 15 of subsequent cycles until achievement of durable complete response (CR). Cycles repeat every 21 days in the absence of durable CR, disease progression, or unacceptable toxicity. Patients with durable CR for ≥ 9 months may then receive odronextamab IV over 1-4 hours on day 1 of each subsequent cycle. These cycles repeat every 28 days for up to a total of 2 years in the absence of disease progression or unacceptable toxicity. Patients receive SOC CAR T-cell therapy if disease assessment shows less than a CR after cycle 4, or after cycle 5 if disease assessment shows progressive disease (PD) any time after cycle 5. Additionally, patients undergo echocardiography (ECHO) or multigated acquisition scan (MUGA) and blood sample collection, positron emission tomography (PET)/computed tomography (CT) or CT throughout the study. Patients may also undergo CT of the brain at screening. After completion of study treatment, patients are followed up at 30 days then every 4 months for up to 2 years.

Conditions

Interventions

Type	Name	Description
BIOLOGICAL	Chimeric Antigen Receptor T-Cell Therapy	Receive CAR T-cell therapy
BIOLOGICAL	Odronextamab	Given IV

Timeline

Start date: 2025-08-07
Primary completion: 2029-02-01
Completion: 2029-04-01
First posted: 2025-03-03
Last updated: 2025-09-29

Locations

1 site across 1 country: United States

Regulatory

FDA-regulated drug study

Source: ClinicalTrials.gov record NCT06854159. Inclusion in this directory is not an endorsement.