A Phase 2 interventional study of Obinutuzumab and Glofitamab in Lymphoma, B-cell Lymphomas and Relapsed/Refractory Large B-cell Lymphoma, sponsored by Massachusetts General Hospital. Not yet recruiting at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-17.
Sponsored by Massachusetts General Hospital · Phase 2, Interventional, and Treatment
The goal of this clinical trial is to assess the clinical efficacy of bridging therapy with glofitamab/gemcitabine/oxaliplatin (Glofit-GemOx) followed by lisocabtagene maraleucel (liso-cel) in relapsed/refractory large B-cell lymphomas. This clinical trial also aims to investigate other efficacy parameters of the combination of Glofit-GemOx plus liso-cel and assess the safety of the combination of Glofit-GemOx bridging plus liso-cel. The main questions it aims to answer are:
This is a multi-center, phase II single-arm study to assess the efficacy and safety of glofitamab/gemcitabine/oxaliplatin (Glofit-GemOx) as bridging therapy followed by lisocabtagene maraleucel (liso-cel) in patients with relapsed/refractory large B-cell lymphomas. Participants will also receive obinutuzumab pre-treatment and undergo apheresis. The U.S. Food and Drug Administration (FDA) has approved obinutuzumab as a treatment option for relapsed/refractory large B-cell lymphomas. Obinutuzumab is a targeted cancer drug called a monoclonal antibody. Obinutuzumab works by attaching to a specific marker on certain white blood cells (including cancerous ones), flagging them so the body's immune system knows which cells to destroy. The U.S. Food and Drug Administration (FDA) has approved glofitamab as a treatment option for relapsed/refractory large B-cell lymphomas. Glofitamab is a T-cell-bispecific antibody that works by bringing the body's immune cells directly to cancer cells. Specifically, glofitamab attaches to cancerous B cells on one side and to T cells (the immune system's "killer" cells) on the other side, helping the T cells recognize and attack the cancer. This process activates the immune system so it can amplify its response and destroy tumor cells. Gemcitabine/oxaliplatin (GemOx) is a standard, widely used chemotherapy treatment for diffuse large B-cell lymphoma that has returned or gotten worse. Gemcitabine is a nucleoside analog chemotherapy agent that stops cancer cells from making new DNA. Cells need DNA to grow and divide so, by blocking this process, gemcitabine slows down or kills the cancer cells. Oxaliplatin is a platinum-based chemotherapy drug that damages the DNA inside cancer cells, preventing them from growing and dividing. This damage causes the cancer cells to stop working properly and, eventually, die. The U.S. Food and Drug Administration (FDA) has approved lisocabtagene maraleucel (liso-cel) as a treatment option for relapsed/refractory large B-cell lymphomas. Lisocabtagene maraleucel is a CAR-T cell therapy made from an individual's own immune (T) cells. A patient's T cells are extracted though a process called leukapheresis and engineered into CAR-T cells that recognize and attack cancer cells. These CAR-T cells are then returned into the body so they can find and kill the cancer. The resulting re-engineered cell product is called lisocabtagene maraleucel. The U.S. Food and Drug Administration (FDA) has not approved glofitamab with gemcitabine and oxaliplatin (Glofit-GemOx) as a treatment for any disease, but has been incorporated into the National Cancer Center Network (NCCN) guidelines as a recommended treatment in the United States for diffuse large B-cell lymphoma that has returned or gotten worse. Participants will receive treatment until completion or until their disease progresses, they experience another disease or illness that prevents further administration of study treatment, they experience unacceptable side effects, they demonstrate an inability or unwillingness to receive the medication regimen, or they withdraw from the study. Participants will be followed for up to 24 months after the last participant is enrolled. It is expected that about 52 people will take part in this research study. Bristol Myers Squibb Company is supporting this research study by providing funding for the clinical trial activities.
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OR Relapsed or refractory to 1 prior line of systemic lymphoma therapy at any time after initial treatment if patient is ineligible for a stem cell transplant. Previous therapy must have included a CD20-targeted agent and an anthracycline or alkylating agent. Patients may have received steroids and/or polatuzumab-rituximab (without bendamustine), and/or radiation therapy for disease control and/or palliation "holding therapy" between frontline therapy and protocol registration and this will not be considered an additional line of systemic therapy.
Exclusion Criteria:
Serologic status reflecting active hepatitis B or C infection
Participants will receive obinutuzumab at the pre-determined dose 4 days prior to undergoing leukapheresis. After leukapheresis, participants will receive glofitamab, gemcitabine, and oxaliplatin (Glofit-GemOx) at the pre-determined doses over 3 weeks for 1-2 treatment cycles (each cycle is 21 days). Participants will then receive lymphodepleting chemotherapy of fludarabine and cyclophosphamide at the pre-determined doses for 3 consecutive days. Lsiocabtagene maraleucel (liso-cel) will be administered 2-7 days after the participants completes lymphodepleting chemotherapy.
Drug: Obinutuzumab · Drug: Glofitamab · Drug: Gemcitabine & oxaliplatin · Procedure: Leukapheresis · Drug: Lymphodepleting chemotherapy · Drug: LISOCABTAGENE MARALEUCEL
Intravenous infusion received once, 5 days prior to receiving the first doses of glotfitamab, gemcitabine, and oxaliplatin.
Also known as: GA101, RO5072759
Intravenous infusion received on days 1, 3, 8, and 15 of cycle 1 and on day 15 of the optional cycle 2 (each cycle is 21 days).
Intravenous infusions received on day 1 of cycle 1 and an optional cycle 2 (each cycle is 21 days).
Procedure to collect stem cells for modification that will occur 2 days prior to administration of the first doses of glofitamab, gemcitabine, and oxaliplatin.
Intravenous infusions of cyclophosphamide and fludarabine administered for 3 consecutive days 3-5 days prior to receive lisocabtagene maraleucel.
Also known as: cyclophosphamide, fludarabine
Intravenous infusion of participant's re-manufactured stem cells administered one 3-5 days after completing lymphodepleting chemotherapy.
Complete Response Rate (CRR) to lisocabtagene maraleucel
The complete response rate (CRR) is defined as the proportion of subjects achieving an objective response of complete response prior to start of another non-study anticancer therapy. CRR is based on the best overall response post-lisocabtagene maraleucel infusion. CRR will be defined according to the Lugano Classification.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Overall Response Rate to Glofit-GemOx bridging
Overall response rate is the proportion of participants achieving partial response (PR) or complete response (CR) according to the Lugano Classification. Overall response rate is based on the PR or CR to glofitamab, gemcitabine, and oxaliplatin (Glofit-GemOx) bridging therapy.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Progression-Free Survival (PFS) after lisocabtagene maraleucel
Progression-free survival (PFS) is defined as the time from registration to the earlier of progression or death due to any cause. Participants alive without disease progression are censored at date of last disease evaluation. PFS is based on the lisocabtagene maraleucel infusion. PFS will be summarized using Kaplan-Meier estimates.
Time frame: Registration to death or up to 2 years after the day of the lisocabtagene maraleucel infusion.
Overall Survival (OS) after lisocabtagene maraleucel
Overall survival (OS) is defined as the time from registration to death due to any cause or censored at date last known alive. OS is based on the lisocabtagene maraleucel infusion. OS will be summarized using Kaplan-Meier estimates.
Time frame: Registration to death or up to 2 years after the day of the lisocabtagene maraleucel infusion.
Overall Response Rate (ORR) to lisocabtagene maraleucel
Overall response rate is the proportion of participants achieving partial response (PR) or complete response (CR) according to the Lugano Classification. Overall response rate is based on the PR or CR to lisocabtagene maraleucel infusion.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Duration of Response (DOR) after lisocabtagene maraleucel
The duration of response is measured from the time measurement criteria are met for complete response (CR) or partial response (PR) (whichever is first recorded) until the first date that recurrent or progressive disease is objectively documented (taking as reference for progressive disease the smallest measurements recorded since the treatment started, or death due to any cause. Duration of response is based on the CR or PR of the lisocabtagene maraleucel infusion. Participants without events reported are censored at the last disease evaluation). DOR will be summarized using Kaplan-Meiser estimates.
Time frame: Day of first measurement meeting CR or PR criteria to the day of first documentation of recurrent or progressive disease or for up to 2 years after the day of the lisocabtagene maraleucel infusion.
Incidence of Treatment-Emergent Adverse Events from Glofit-GemOx to 90 days post-lisocabtagene maraleucel
Incidence of treatment-emergent adverse events (AEs) is defined as the percentage of participants that experience an AE requiring emergent treatment. Incidence of treatment-emergent AEs is based on the time from initiation of gemcitabine, glofitamab, and oxaliplatin (Glofit-GemOx) to 90 days after receiving the lisocabtagene maraleucel infusion. AEs other than CRS and ICANS will be coded using CTCAE v6 criteria. Frequency and percentage of treatment-emergent AEs will be calculated.
Time frame: Day of initiation of Glofit-GemOx therapy to 90 days post-lisocabtagene maraleucel infusion.
Proportion of Participants Receiving Interventions for CRS or Neurotoxicity
Proportion of participants receiving interventions for Cytokine Release Syndrome (CRS) or neurotoxicity is defined as the number of participants that receive treatment for CRS or neurotoxicity divided by the total number of participants. Median, mean, and range of participants receiving interventions for CRS or neurotoxicity will be calculated.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Incidence of Cytokine Release Syndrome (CRS)
Incidence of Cytokine Release Syndrome (CRS) is defined as the percentage of participants who experience CRS of any grade as graded by the ASTCT consensus grading criteria. Frequency and percentage of CRS occurrences will be calculated.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Incidence of Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS)
Incidence of Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS) is defined as the percentage of participants who experience ICANS of any grade as graded by the ASTCT consensus grading criteria. Frequency and percentage of ICANS occurrences will be calculated.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Incidence of Grade ≥3 Cytokine Release Syndrome (CRS)
Incidence of grade ≥3 Cytokine Release Syndrome (CRS) is defined as the percentage of participants who experience CRS of grade 3 or higher as graded by the ASTCT consensus grading criteria. Frequency and percentage of CRS occurrences will be calculated.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Incidence of Grade ≥3 Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS)
Incidence of grade ≥3 Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS) is defined as the percentage of participants who experience ICANS of grade 3 or higher as graded by the ASTCT consensus grading criteria. Frequency and percentage of ICANS occurrences will be calculated.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Incidence and Grading of Infection
Incidence of infection is defined as the percentage of participants experiencing any grade of infection. The grading of each occurrence according to CTCAE v6 criteria will be reported. Frequency and percentage of infections will be calculated.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Incidence and Grading of Cytopenias
Incidence of cytopenias is defined as the percentage of participants experiencing any grade of neutropenia, lymphopenia, thrombocytopenia, and/or anemia. The grading of each occurrence according to CTCAE v6 criteria will be reported. Frequency and percentage of cytopenias will be calculated.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Incidence and Number of Transfusions
Incidence of transfusions is defined as the percentage of participants who receive a transfusion of either red blood cells or platelets. The total number of transfusions will be reported. Frequency and percentage of transfusions received will be calculated.
Time frame: Screening to start of another non-study anticancer therapy or for up to 2 years from the day the last participant is enrolled, whichever occurs first.
Plan to share: Yes — The Dana-Farber / Harvard Cancer Center encourages and supports the responsible and ethical sharing of data from clinical trials. De-identified participant data from the final research dataset used in the published manuscript may only be shared under the terms of a Data Use Agreement. Request may be directed to: Dr. Jeremy Abramson (617-726-8566, jabramson@mgh.harvard.edu). The protocol and statistical analysis plan will be made available on ClinicalTrials.gov only as required by federal regulation or as a condition of awards and agreements supporting the research.
Supporting information: Study protocol, Sap, Icf
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