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Odronextamab for Relapsed and Refractory Large B-cell Lymphomas Before CAR-T

  • PhasePhase 2
  • StatusRecruiting
  • Planned enrollment27 people
  • Recruiting US sites1
  • SponsorUniversity of Washington
  • RegistryNCT06784726

Recruitment re-checked on ClinicalTrials.gov Oct 30, 2026. Public record; not medical advice.

Odronextamab for Relapsed and Refractory Large B-cell Lymphomas Before CAR-T: a one-minute explainerNCT067847261 min

Eligibility

Who can join

The film gives the main points. The full list below is copied from the registry; the study team makes the final decision.

  • Age18 Years to no maximum
  • SexAll
  • Healthy volunteersNo

You may be able to join if

  • Histologically confirmed large B cell lymphoma, including diffuse large B-cell lymphoma (DLBCL) not otherwise specified, primary mediastinal large B-cell lymphoma, high grade B-cell lymphoma, DLBCL arising from indolent lymphoma, follicular lymphoma (FL) grade 3B
  • Measurable disease, defined as at least one measurable lesion ≥ 15 mm on PET, CT, or magnetic resonance imaging (MRI) within one month of screening, according to the International Working Group consensus response evaluation criteria in lymphoma
  • Prior frontline therapy for large B cell lymphoma must have failed the patient, and criteria must be met for receiving commercial axicabtagene ciloleucel (axi-cel), lisocabtagene maraleucel (liso-cel), or tisagenlecleucel (tisa-cel) per Food and Drug Administration (FDA) label
  • Age ≥ 18 years
  • Capable of understanding and providing a written informed consent
  • Prior treatment with an anti-CD20 antibody therapy
  • Eastern Cooperative Oncology Group performance status of 0-1; we allow enrollment of patients with a performance status of 2 if it is attributed to lymphoma per discretion of the treating physician or principal investigator (PI)
  • Creatinine clearance ≥ 45 mL/min calculated by Cockcroft-Gault equation
  • Total bilirubin ≤ 1.5 x the upper limit of normal (ULN), except in patients with Gilbert's syndrome
  • Aspartate aminotransferase and alanine aminotransferase ≤ 2.5 x the ULN
  • Adequate pulmonary function, defined as ≤ grade 1 dyspnea and oxygen saturation (SpO2) ≥ 92% on room air
  • Adequate cardiac function, defined as left ventricular ejection fraction ≥ 50% and without evidence for pericardial effusion
  • Platelet count ≥ 75 x 10^9 /L
  • Hemoglobin (Hg) level ≥ 9 g/dL
  • Absolute neutrophil count (ANC) ≥ 1 x 10^9 /L
  • Patients with bone marrow involvement or splenic sequestration: Platelet count ≥ 25 x 10^9 /L
  • Patients with bone marrow involvement or splenic sequestration: Hg ≥ 7.0 g/dL
  • Patients with bone marrow involvement or splenic sequestration: ANC ≥ 0.5 x 10^9 /L
  • Negative serum pregnancy test within 2 days of initiating odronextamab for women of childbearing potential (WOCBP), defined as those who have not been surgically sterilized or who have not been free of menses for at least 1 year
  • Fertile male and WOCBP patients must be willing to use highly effective contraceptive methods from study recruitment to at least 6 months after the CAR T-cell infusion
  • Patients must not provide egg or sperm donation until at least 6 months after the completion of the last dose of Odron

You cannot join if

  • Detectable cerebrospinal fluid malignant cells, or brain metastases, or with a history of cerebrospinal fluid malignant cells or brain metastases. Patients with a history of secondary central nervous system (CNS) lymphoma may be eligible provided that there has been no evidence of CNS disease from lymphoma for at least 3 months at the time of screening
  • History of a seizure disorder, cerebrovascular ischemia/hemorrhage, dementia, cerebellar disease, or any autoimmune disease with central nervous system (CNS) involvement
  • Standard anti-neoplastic chemotherapy (non-biologic) within 5-times the half-life or within 2 weeks, whichever is shorter, prior to first administration of study drug
  • Standard radiotherapy within 2 weeks of first administration of study drug
  • Prior treatment with an anti-CD20 x anti-CD3 bispecific therapy, unless all the following are met: disease responded to prior bispecific therapy (CR or PR per Lugano criteria) and did not experience disease progression within 12 months of the last dose of prior bispecific therapy, and the tumor must still express CD20 (CD20 examination per standard of care [SOC])
  • Allogeneic stem cell transplantation
  • Any CAR-T cell therapy
  • Patients may not be receiving other investigational agents
  • Treatment with rituximab, alemtuzumab, or other investigational or commercial biologic agent within 2 weeks prior to first administration of study drug
  • Immunosuppressive therapy (other than biologic) within 2 weeks of first administration of study drug
  • Treatment with an investigational non-biologic agent within 2 weeks of first administration of study drug
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition of study drug
  • History of hypersensitivity to any compound in the tetracycline antibiotics group
  • Concurrent active malignancy for which the patient is receiving systemic treatment, unless approved by PI
  • Known active and uncontrolled bacterial, viral, fungal, mycobacterial, or other infection
  • Evidence of significant concurrent disease or medical condition that could interfere with the conduct of the study, or put the patient at significant risk including, but not limited to, significant cardiovascular disease (e.g., New York Heart Association class III or IV cardiac disease, myocardial infarction within the previous 6 months, unstable arrhythmias, or unstable angina) and/or significant pulmonary disease (e.g., obstructive pulmonary disease and history of symptomatic bronchospasm)
  • Ongoing systemic corticosteroid treatment, with the exception of corticosteroid use for other (non-tumor and non-immunosuppressive) indications up to a maximum of 10 mg/day of prednisone or equivalent. A short course of corticosteroid for lymphoma disease control during screening is allowed
  • Infection with human immunodeficiency virus (unless viral load is undetectable and CD4 count ≥ 400) or chronic infection with hepatitis B virus or hepatitis C virus. Patients with hepatitis B (hepatitis B surface antigen positive [HepBsAg+]) with controlled infection were permitted upon consultation with the physician managing the infection
  • Known hypersensitivity to both allopurinol and rasburicase
  • Pregnant or breast-feeding women
  • Administration of live vaccination within 28 days of first administration of study drug

The treatment

How it is intended to work

This is how the treatment is meant to work. Whether it helps, and how safe it is, is what this trial is testing.

Treatments listed in the registry

  • Odronextamab (Biological): Given IV
  • Biospecimen Collection (Procedure): Undergo collection of blood and oral or rectal swab samples
  • Bone Marrow Aspiration (Procedure): Undergo bone marrow aspiration
  • Bone Marrow Biopsy (Procedure): Undergo bone marrow biopsy
  • Chimeric Antigen Receptor T-Cell Therapy (Biological): Undergo CAR-T cell therapy
  • Computed Tomography (Procedure): Undergo PET/CT
  • Leukapheresis (Procedure): Undergo leukapheresis
  • Lumbar Puncture (Procedure): Undergo lumbar puncture
  • Positron Emission Tomography (Procedure): Undergo PET/CT
  • Questionnaire Administration (Other): Ancillary studies
  • Biopsy Procedure (Procedure): Undergo tissue biopsy

The study

Treatment groups

Na · Single Group · masking: None

Treatment (odronextamab) (Experimental)

Patients receive odronextamab IV based on the following schedules: * Step-up dosing during cycle 1: 0.2 mg on C1D1, 0.5 mg on C1D2, 2 mg on C1D8 and C1D9, respectively, and 10 mg on C1D15 and C1D16, respectively (0.7/4/20 regimen). * Dosing during cycles 2-4: Odron will be given at 160 mg weekly. * Once every other week at 320 mg of remaining cycles. Please see the Detailed Description for additional information.

What it involves

Procedures

As the registry describes them. Requirements to join, such as a tissue sample, are in the eligibility list above even when on-study procedures are optional. Ask the study team which steps apply to you.

  • biopsy: Part of the study plan; some time points described as optional
  • bone marrow: Part of the study plan; some time points described as optional
  • blood samples: Part of the study plan
  • CT scans: Part of the study plan
  • PET scans: Part of the study plan
  • questionnaires: Part of the study plan
  • lumbar puncture: Part of the study plan; some time points described as optional
  • leukapheresis: Part of the study plan

Goals

What the study measures

Main goals

  • Failure to undergo leukapheresis (Up to 5 years)

Other goals

  • Receipt of chimeric antigen receptor T-cell therapy (CAR-T)
  • Overall response rate (ORR) following bridging prior to CAR-T infusion
  • Progression free survival (PFS) following CAR-T infusion
  • CR rate
  • PFS in patients who achieve CR after 2 cycles of Odron, choose to opt out of CAR-T, and receive up to a total of 12 months of Odron
  • Incidence of AEs

Planned enrollment: 27 (estimated).

Where

Recruiting US sites

  • Fred Hutch/University of Washington Cancer Consortium, Seattle, Washington

Site status as of Oct 30, 2026. Check the live record before contacting a site.

Sources

Where this comes from

Registry record reviewed as fetched Oct 30, 2026, last updated by the sponsor Aug 27, 2026. Public record; not medical advice.

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