Testing the Anti-cancer Drug, Glofitamab, in Patients With Mantle Cell Lymphoma (A Type of Blood Cancer) Whose Disease Returned After CAR-T Cell Therapy

NCT07003295 | Recruiting Phase 2 FDA Drug

• 3 other identifiers: NCI-2025-0391510702UM1CA186691
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 5

Brief Summary

This phase II trial tests the safety and side effects of glofitamab and obinutuzumab and how well they work in treating patients with mantle cell lymphoma that has come back after a period of improvement (relapsed) or that has not responded to previous treatment (refractory) after receiving CD19-directed chimeric antigen receptor (CAR) T-cell therapy. CAR T-cell therapy is a form of immunotherapy where the immune system cell, T-cell, is changed to attack cancer cells. Glofitamab is a bispecific antibody that can bind to two different antigens at the same time. Glofitamab binds to CD3, a protein found on T cells (a type of white blood cell), and CD20 a protein found on B cells (another type of white blood cell) and some lymphoma cells. This may help the immune system kill cancer cells. Obinutuzumab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread. A monoclonal antibody is a type of protein that can bind to certain targets in the body, such as molecules that cause the body to make an immune response (antigens). Giving glofitamab and obinutuzumab may be safe, tolerable, and/or effective in treating patients with relapsed or refractory mantle cell lymphoma after receiving CD19-directed CAR T-cell therapy.

Conditions

Recurrent Mantle Cell Lymphoma; Refractory Mantle Cell Lymphoma

Outcome Measures

Primary Outcomes (1)

• Objective response rate

  A Simon 2-stage optimal design will be used with a favorable response of 55% and unfavorable response of 25%.

  Up to 2 years

Secondary Outcomes (6)

• Complete response rate

  Up to 2 years

• Progression-free survival (PFS)

  Up to 24 months

• Overall survival (OS)

  Up to 24 months

• Incidence of grade 3-4 cytokine release syndrome

  Up to 2 years

• Incidence of grade 3-4 neurologic toxicity

  Up to 2 years

Other Outcomes (5)

• Relationship in circulating tumor deoxyribonucleic acid (ctDNA) in plasma, treatment response, and duration of response

  On day 1 of cycles 1, 3, and 5 (cycle length = 21 days)

• Relationship between chimeric antigen receptor (CAR) T-cell levels in plasma, immunophenotype, treatment response, and duration of response

  On day 1 of cycles 1, 3 and 5 (cycle length = 21 days)

• Glofitamab PK

  Before and 5-60 minutes after glofitamab infusions on day 8 of cycle 1 and day 1 of cycles 2-4, 6, 9, and 12 (cycle length = 21 days)

Study Arms (1)

Treatment (obinutuzumab, glofitamab)

EXPERIMENTAL

Patients receive obinutuzumab IV on day 1 or on days 1 and 2 of cycle 1 and glofitamab IV over 8 hours on days 8 and 15 of cycle 1 then over 2-8 hours on day 1 of cycles 2-12. Cycles repeat every 21 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo blood sample collection and PET/CT throughout the study.

Procedure: Biospecimen Collection; Procedure: Computed Tomography; Biological: Glofitamab; Biological: Obinutuzumab; Procedure: Positron Emission Tomography

Interventions

Glofitamab BIOLOGICAL

Given IV

Also known as: Anti-CD20 x Anti-CD3 Bispecific Monoclonal Antibody RO7082859, Columvi, Glofitamab-gxbm, RO 7082859, RO-7082859, RO7082859

Treatment (obinutuzumab, glofitamab)

Computed Tomography PROCEDURE

Undergo PET/CT

Also known as: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized axial tomography (procedure), Computerized Tomography, Computerized Tomography (CT) scan, CT, CT Scan, Diagnostic CAT Scan, Diagnostic CAT Scan Service Type, tomography

Treatment (obinutuzumab, glofitamab)

Obinutuzumab BIOLOGICAL

Given IV

Also known as: Anti-CD20 Monoclonal Antibody R7159, GA 101, GA-101, GA101, Gazyva, huMAB(CD20), R 7159, R-7159, R7159, RO 5072759, RO-5072759, RO5072759

Treatment (obinutuzumab, glofitamab)

Positron Emission Tomography PROCEDURE

Undergo PET/CT

Also known as: Medical Imaging, Positron Emission Tomography, PET, PET Scan, Positron emission tomography (procedure), Positron Emission Tomography Scan, Positron-Emission Tomography, PT

Treatment (obinutuzumab, glofitamab)

Biospecimen Collection PROCEDURE

Undergo blood sample collection

Also known as: Biological Sample Collection, Biospecimen Collected, Specimen Collection

Treatment (obinutuzumab, glofitamab)

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Patients must have histologically or cytologically confirmed diagnosis of mantle cell lymphoma that is relapsed (disease progression after the last treatment regimen) or refractory (failure to achieve a partial or complete response from the last treatment regimen)
• Patients must have been previously treated with an anti-CD19 CAR T-cell therapy and have failed or been intolerant to Bruton's tyrosine kinase (BTK) inhibition. Both commercial and investigational CAR-T products which target CD19 will be allowed, including dual-targeting products
• Patients must have at least one bi-dimensionally measurable (defined as at least 1.5 cm) nodal lesion or one bi-dimensionally measurable (at least 1 cm) extranodal lesion, as measured on CT scan
• Age ≥ 18 years. Because no dosing or adverse event (AE) data are currently available on the use of glofitamab and obinutuzumab in patients \< 18 years of age, children are excluded from this study
• Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 (Karnofsky ≥ 60%)
• Absolute neutrophil count ≥ 1,000/mcL
• Platelets ≥ 50,000/mcL
• Total bilirubin ≤ 1.5 x institutional upper limit of normal (ULN) or ≤ 3 x institutional ULN if the patient has Gilbert syndrome
• Aspartate aminotransferase (AST)(serum glutamic oxaloacetic transaminase \[SGOT\])/alanine aminotransferase (ALT)(serum glutamic pyruvic transaminase \[SGPT\]) ≤ 3 x institutional ULN
• Creatinine ≤ 1.5 x institutional ULN OR glomerular filtration rate (GFR) ≥ 60 mL/min/1.73 m\^2
• Patients with human immunodeficiency virus (HIV) infection are eligible if on effective anti-retroviral therapy with undetectable viral load within 6 months
• Patients with a history of hepatitis B virus (HBV) infection or positive total hepatitis B core antibody (HBcAb) are eligible if the hepatitis B surface antigen (HBsAg) is negative and HBV DNA viral load is undetectable by polymerase chain reaction (PCR) at the time of screening. Such patients must be managed with appropriate anti-viral therapy, if indicated, and must be willing to undergo HBV DNA testing on day 1 of each cycle and every 3 months for at least 12 months after the final cycle of study treatment
• Patients with a history of hepatitis C virus (HCV) infection or positive HCV antibody are eligible if HCV ribonucleic acid (RNA) viral load is undetectable by PCR
• Patients with treated brain metastases are eligible if follow-up brain imaging after central nervous system (CNS)-directed therapy shows no evidence of progression and patients are asymptomatic from CNS involvement
• Patients with new, progressive brain metastases (active brain metastases) or leptomeningeal disease are eligible if the treating physician determines that patients are asymptomatic and immediate CNS specific treatment is not required and is unlikely to be required during the first cycle of therapy

You may not qualify if:

• Patients who have not recovered from AEs due to prior anti-cancer therapy (i.e., have residual toxicities \> grade 1) with the exception of alopecia
• Patients who are receiving any other investigational agents
• History of allergic reactions attributed to compounds of similar chemical or biologic composition to glofitamab and obinutuzumab
• Pregnant women are excluded from this study because glofitamab and obinutuzumab are agents with the potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for AEs in nursing infants secondary to treatment of the mother with glofitamab and obinutuzumab, breastfeeding should be discontinued if the mother is treated with glofitamab and obinutuzumab
• Patients with active CRS or requiring intervention for CRS within 14 days prior to study enrollment
• Patients with active neurotoxicity or requiring intervention for neurotoxicity within 14 days prior to study enrollment
• Patients requiring antimicrobial treatment or hospitalization for active infection within 14 days prior to study enrollment for known active bacterial, viral (including severe acute respiratory syndrome coronavirus 2 \[SARS-CoV-2\]), fungal, mycobacterial, parasitic, or other infection (excluding fungal infections of nail beds). Infection must be completely resolved prior to initiation of study treatment
• Patients receiving systemic immunosuppressive medications within 14 days prior to study enrollment, including, but not limited to: prednisone ≥ 20 mg per day, azathioprine, methotrexate, anti-tumor necrosis factor agents, anti-interleukin-6/6R agents, or anti-interleukin 1 agents, are not eligible. The use of inhaled corticosteroids is permitted
• Patients with known or suspected chronic active Epstein Barr virus (EBV) or cytomegalovirus (CMV) infection
• Patients with known or suspected history of hemophagocytic lymphohistiocytosis (HLH)
• Patients with prior treatment with glofitamab or other bispecific antibodies targeting both CD20 and CD3
• Patients with known history of progressive multifocal leukoencephalopathy
• Patients with current or past history of CNS disease, such as stroke, epilepsy, CNS vasculitis, or neurodegenerative disease. Patients with a history of stroke who have not experienced a stroke or transient ischemic attack in the past 2 years and have no residual neurologic deficits as judged by the investigator are allowed
• Patients with the significant cardiovascular disease, including New York Heart Association class III or IV or otherwise symptomatic heart failure (stage C or D), myocardial infarction within the last 3 months, unstable arrhythmias, or unstable angina
• Patients who have undergone major surgery for non-diagnostic purposes within 4 weeks before first study treatment

Sponsors & Collaborators

• National Cancer Institute (NCI): lead

Study Sites (5)

City of Hope Comprehensive Cancer Center

Duarte, California, 91010, United States

RECRUITING

Emory University Hospital Midtown

Atlanta, Georgia, 30308, United States

RECRUITING

Emory University Hospital/Winship Cancer Institute

Atlanta, Georgia, 30322, United States

RECRUITING

Emory Saint Joseph's Hospital

Atlanta, Georgia, 30342, United States

RECRUITING

Vanderbilt University/Ingram Cancer Center

Nashville, Tennessee, 37232, United States

RECRUITING

MeSH Terms

Conditions

Lymphoma, Mantle-Cell

Interventions

Specimen Handling; glofitamab; obinutuzumab; Magnetic Resonance Spectroscopy

Condition Hierarchy (Ancestors)

Lymphoma, Non-Hodgkin; Lymphoma; Neoplasms by Histologic Type; Neoplasms; Lymphoproliferative Disorders; Lymphatic Diseases; Hemic and Lymphatic Diseases; Immunoproliferative Disorders; Immune System Diseases

Intervention Hierarchy (Ancestors)

Clinical Laboratory Techniques; Diagnostic Techniques and Procedures; Diagnosis; Investigative Techniques; Spectrum Analysis; Chemistry Techniques, Analytical

Study Officials

• Cole H Sterling

  JHU Sidney Kimmel Comprehensive Cancer Center LAO

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: NIH
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: June 3, 2025
• First Posted: June 4, 2025
• Study Start (Estimated): August 14, 2026
• Primary Completion (Estimated): August 31, 2027
• Study Completion (Estimated): August 31, 2027
• Last Updated: April 16, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will share

Locations

US (5)