A Trial of Polatuzumab Vedotin, Obinutuzumab and Glofitamab As a Peri-CAR-T Cell Treatment Strategy in Large B-cell Lymphoma

NCT ID: NCT06071871

Last Updated: 2024-12-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

99 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-08-16

Study Completion Date

2028-07-30

Brief Summary

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The PORTAL study will test a new combination of drugs (glofitamab, polatuzumab vedotin and obinutuzumab) in patients with large B-cell lymphoma (LBCL) that has come back (relapsed) or not responded to previous treatment. It will determine how safe and effective the combination of these cancer drugs is in treating LBCL before and after CAR-T cell therapy.

Detailed Description

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This is a phase 2, open label trial conducted in 2 parts.

The overall aim is:

Part 1: To determine the efficacy of Pola-Glofit as bridging treatment to CAR-T cell therapy in patients with relapsed or refractory large B cell lymphomas.

Part 2: To determine the efficacy of Pola-Glofit in patients with relapsed or refractory large B cell lymphomas who have failed to achieve CMR, or progressed after CAR-T cell therapy.

Treatment consists of:

Part 1: Patients will receive 2 cycles of Pola-Glofit. Obinutuzumab is given 7 days before the first dose of Glofit. After 2 cycles, patients have a PET-CT scan to check the response. If the scan shows a response and the patient is still suitable for CAR-T, patients will receive planned CAR-T therapy. If the patient is not suitable to continue with CAR-T, patients can receive up to 4 more cycles of Pola-Glofit, and then 6 cycles of Glofit.

Part 2: Patients will receive 6 cycles of Pola-Glofit, and then 6 cycles of Glofit. Obinutuzumab is given 7 days before the first dose of Glofit.

For both Part 1 and Part 2, all cycles are 21 days. A step-up dosing regimen will be followed:

* Cycle 1 Day 1: Obinutuzumab is given intravenously at a dose of 1g over 4-5 hours.
* Cycle 1 Day 2: Polatuzumab is given intravenously at a dose of 1.8mg/kg over 90 minutes.
* Cycle 1 Day 8: Glofitamab is given intravenously at a dose of 2.5mg over 4 hours. Patients need to stay in hospital for 24 hours.
* Cycle 1 Day 15: Glofitamab is given intravenously at a dose of 10mg over 2 hours. (Patients may need to stay in hospital for 24 hours.)
* From Cycle 2-6, Polatuzumab is given intravenously at a dose of 1.8mg/kg over 30 minutes on Day 1, and Glofitamab is given intravenously at a dose of 30mg over 2 hours on Day 1.
* From Cycle 7-12, Glofitamab is given intravenously at a dose of 30mg over 2 hours on Day 1.

Patients will be followed up until the last patient completes their 1 year post-treatment follow up visit.

Conditions

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Large B-cell Lymphoma

Keywords

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Glofitamab Polatuzumab vedotin Obinutuzumab Bridging therapy Large B-cell Lymphoma

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SINGLE_GROUP

Part 1: 42 patients, Part 2: 42-57 patients (some Part 1 patients may also participate in Part 2)
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Part 1

Patients whose large B-cell lymphoma has progressed/not responded to previous treatment and are due to start standard CAR-T therapy.

All patients receive 2 cycles of glofitamab and polatuzumab vedotin (Glofit-Pola). Obinutuzumab pre-treatment is given on cycle 1 day 1.

Patients have a PET-CT scan to check the response after cycle 2. If the scan shows a response and patients are still suitable for CAR-T cell therapy, patients will proceed to receive planned CAR-T therapy and will not receive further Glofit-Pola in Part 1. If not, patients can receive 4 more cycles of glofitamab and polatuzumab vedotin, and then 6 cycles of glofitamab.

Group Type EXPERIMENTAL

Glofitamab

Intervention Type DRUG

Glofitamab is given intravenously at a dose of 2.5mg over 4 hours on Cycle 1 Day 8. Patients need to stay in hospital for 24 hours.

Glofitamab is given intravenously at a dose of 10mg over 2 hours on Cycle 1 Day 15. (Patients may need to stay in hospital for 24 hours.) Glofitamab is given intravenously at a dose of 30mg over 2 hours on Day 1 of Cycles 2-12 (as relevant).

Polatuzumab vedotin

Intervention Type DRUG

Polatuzumab is given intravenously at a dose of 1.8mg/kg on Cycle 1 Day 2, and then Day 1 of Cycle 2-Cycle 6.

Obinutuzumab

Intervention Type DRUG

Obinutuzumab pre-treatment is given intravenously at a dose of 1g on Cycle 1 Day 1.

Part 2

Patients whose large B-cell lymphoma has progressed/not responded after standard CAR-T cell therapy.

All patients receive 6 cycles of glofitamab and polatuzumab vedotin (Glofit-Pola), and then 6 cycles of glofitamab alone. Obinutuzumab pre-treatment is given on cycle 1 day 1.

Group Type EXPERIMENTAL

Glofitamab

Intervention Type DRUG

Glofitamab is given intravenously at a dose of 2.5mg over 4 hours on Cycle 1 Day 8. Patients need to stay in hospital for 24 hours.

Glofitamab is given intravenously at a dose of 10mg over 2 hours on Cycle 1 Day 15. (Patients may need to stay in hospital for 24 hours.) Glofitamab is given intravenously at a dose of 30mg over 2 hours on Day 1 of Cycles 2-12 (as relevant).

Polatuzumab vedotin

Intervention Type DRUG

Polatuzumab is given intravenously at a dose of 1.8mg/kg on Cycle 1 Day 2, and then Day 1 of Cycle 2-Cycle 6.

Obinutuzumab

Intervention Type DRUG

Obinutuzumab pre-treatment is given intravenously at a dose of 1g on Cycle 1 Day 1.

Interventions

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Glofitamab

Glofitamab is given intravenously at a dose of 2.5mg over 4 hours on Cycle 1 Day 8. Patients need to stay in hospital for 24 hours.

Glofitamab is given intravenously at a dose of 10mg over 2 hours on Cycle 1 Day 15. (Patients may need to stay in hospital for 24 hours.) Glofitamab is given intravenously at a dose of 30mg over 2 hours on Day 1 of Cycles 2-12 (as relevant).

Intervention Type DRUG

Polatuzumab vedotin

Polatuzumab is given intravenously at a dose of 1.8mg/kg on Cycle 1 Day 2, and then Day 1 of Cycle 2-Cycle 6.

Intervention Type DRUG

Obinutuzumab

Obinutuzumab pre-treatment is given intravenously at a dose of 1g on Cycle 1 Day 1.

Intervention Type DRUG

Other Intervention Names

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Columvi Polivy Gazyvaro

Eligibility Criteria

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Inclusion Criteria

* Histologically proven CD20+ LBCL (with CD20 positivity at any timepoint) including diffuse large B cell lymphoma, high grade B cell lymphoma with MYC, BCL2 and/or BCL6 (double/triple hit lymphoma), high grade B cell lymphoma not otherwise specified (NOS), primary mediastinal B-cell lymphoma or transformed follicular lymphoma.

* Part 1: Relapsed or refractory disease and eligible for CAR T-cell therapy in the UK and in need of systemic bridging in the opinion of the local investigator.
* Part 2: Failed to achieve CMR (Deauville score 1-3) on PET scan 1-month post CAR-T or progressed at any point post CAR-T (patients in part 2 may have been previously enrolled in Part 1 and responded to Pola-Glofit bridging or be de novo patients who are naïve to this combination)
* At least one measurable target lesion
* Patient has recent archival biopsy tissue available or is willing to undergo a new biopsy.
* ECOG performance status:

* Part 1: ECOG PS 0/1
* Part 2: ECOG PS 0-2
* Life expectancy of ≥ 12 weeks
* Adequate haematological status.
* Adequate liver and renal function
* Negative test for hepatitis B, hepatitis C, HIV and SARS-CoV-2

Exclusion Criteria

* Patients with known active infection
* Current ≥ Grade 2 peripheral neuropathy
* History of confirmed progressive multifocal leukoencephalopathy
* Current evidence of CNS lymphoma
* Patients with another invasive malignancy in the last 2 years
* Significant history of cardiovascular disease
* Active autoimmune disease or immune deficiency
* Severe neurological disorder
* Uncontrolled tumour-related pain
* Uncontrolled pleural effusion, pericardial effusion, or ascites
* Treatment with other standard anti-cancer radiotherapy/chemotherapy including investigational therapy and targeted therapy within 4 weeks prior to cycle 1 day 1
* Prior solid organ transplantation
* Prior allogeneic stem cell transplant
* Autologous SCT within 100 days prior to cycle 1 day 1
* Any history of immune related ≥ Grade 3 adverse events
* Ongoing corticosteroid use \> 25 mg/day of prednisone or equivalent within 4 weeks prior to study treatment
* Treatment with systemic immunosuppressive medication within 2 weeks prior to initiation of study treatment
* Administration of a live, attenuated vaccine within 4 weeks prior to cycle 1 day 1
* History of severe allergic anaphylactic reactions to chimeric or humanised monoclonal antibodies or recombinant antibody-related fusion proteins.
* Known hypersensitivity to Chinese hamster ovary cell products or to any component of the obinutuzumab, polatuzumab vedotin and/or glofitamab formulation.
* Known or suspected history of HLH
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hoffmann-La Roche

INDUSTRY

Sponsor Role collaborator

University College, London

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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William Townsend

Role: PRINCIPAL_INVESTIGATOR

University College London Hospitals

Locations

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Kings College Hospital NHS Foundation Trust

London, , United Kingdom

Site Status RECRUITING

University College London Hospitals NHS Foundation Trust

London, , United Kingdom

Site Status RECRUITING

The Christie NHS Foundation Trust

Manchester, , United Kingdom

Site Status RECRUITING

Nottingham University Hospitals NHS Trust

Nottingham, , United Kingdom

Site Status RECRUITING

Churchill Hospital

Oxford, , United Kingdom

Site Status RECRUITING

Countries

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United Kingdom

Central Contacts

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PORTAL Trial Manager

Role: CONTACT

Phone: 020 7679 9860

Email: [email protected]

Other Identifiers

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2022-003727-17

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

UCL/150862

Identifier Type: -

Identifier Source: org_study_id