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Study Comparing Odronextamab with Rituximab and Chemotherapy for Patients with Untreated Follicular Lymphoma

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What is this trial about?

A plain-language summary of the goals, design and what participants do

This clinical trial is focused on studying a type of cancer called follicular lymphoma, which is a form of non-Hodgkin lymphoma. The trial is investigating a new treatment called odronextamab, also known by its code name REGN1979. Odronextamab is a special type of medication known as a bispecific antibody, which is designed to target specific proteins on cancer cells. The study aims to compare the effectiveness and safety of odronextamab with a commonly used treatment involving rituximab combined with various chemotherapy drugs, including vincristine sulfate, bendamustine hydrochloride, doxorubicin hydrochloride, cyclophosphamide, and prednisone.

The purpose of the study is to determine how well odronextamab works and how safe it is for patients who have not been treated for follicular lymphoma before. The study is divided into two parts. In the first part, the focus is on assessing the safety and tolerability of odronextamab. In the second part, participants will be randomly assigned to receive either odronextamab or the standard treatment with rituximab and chemotherapy. The study will monitor the participants over a period to see how well the treatments work in achieving a complete response, which means the disappearance of all signs of cancer.

Participants in the study will receive their assigned treatment and will be closely monitored by healthcare professionals. The study will involve regular check-ups and tests, such as imaging scans like MRI or CT scans, to track the progress of the treatment. The trial is expected to continue for several years to gather comprehensive data on the long-term effects and benefits of the treatments being studied.

The research process

The trial runs in 5 steps – from screening to follow-up. Each step says what happens and what the team monitors.

  1. Step 1

    Initial assessment

    Upon joining the study, an initial assessment is conducted to confirm eligibility. This includes a review of medical history, physical examination, and imaging tests such as CT or MRI to document measurable disease.

  2. Step 2

    Part 1: safety run-in

    The first part of the trial focuses on assessing the safety and tolerability of odronextamab. This involves monitoring for any dose-limiting toxicities and treatment-emergent adverse events.

    During this phase, odronextamab is administered as an intravenous infusion. The specific dosage and frequency are determined based on individual tolerance and response.

  3. Step 3

    Part 2: randomized phase

    In the second part, participants are randomly assigned to receive either odronextamab or a combination of rituximab with chemotherapy agents such as vincristine sulfate, bendamustine hydrochloride, doxorubicin hydrochloride, cyclophosphamide, and prednisone.

    The chemotherapy regimen involves various routes of administration: intravenous infusion for rituximab, bendamustine hydrochloride, and doxorubicin hydrochloride; injection for vincristine sulfate; and oral tablets for prednisone.

  4. Step 4

    Treatment duration

    The treatment period varies depending on the assigned group and individual response. Regular assessments are conducted to monitor the effectiveness and any side effects of the treatment.

  5. Step 5

    Follow-up and evaluation

    After completing the treatment phase, follow-up visits are scheduled to evaluate the long-term effects and overall response to the treatment. This includes imaging tests and other assessments as needed.

Who can join the trial?

9 criteria

  • Must have a diagnosis of **follicular lymphoma**. This is a type of cancer that affects the lymphatic system.
  • The cancer must be **CD20 positive**. This means the cancer cells have a specific protein on their surface.
  • The cancer should be **Grade 1-3a** and at an advanced stage, either **stage II bulky** or **stage III/IV**. This describes the size and spread of the cancer.
  • There must be a **need for treatment** as outlined in the study details.
  • Must have **measurable disease**. This means the cancer can be seen and measured using imaging tests like **CT** (Computed Tomography) or **MRI** (Magnetic Resonance Imaging).
  • Must have an **ECOG performance status** of 0-2. This is a scale that measures how well a person can perform daily activities. A score of 0-2 indicates the person is fully active or has some limitations but can still care for themselves.
  • Must have **adequate bone marrow function** and **liver function**. This means the bone marrow and liver are working well enough to handle the treatment.
  • Must be within the specified **age range** for the study.
  • Both **male and female** participants are eligible.
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Investigated drugs

Odronextamab (REGN1979) is a bispecific antibody designed to target two specific proteins, CD20 and CD3. It is used in this clinical trial to treat patients with follicular lymphoma who have not received prior treatment. The medication works by engaging the immune system to attack and destroy cancer cells. It is being studied for its safety, how well it is tolerated, and its effectiveness in achieving a complete response in patients.

What is already known about the treatment

Odronextamab – Odronextamab is administered as an intravenous infusion, meaning it is delivered directly into the bloodstream through a vein. It is currently being studied in clinical trials for its effectiveness and safety in treating follicular lymphoma, a type of blood cancer. The main therapeutic indication for odronextamab is follicular lymphoma, particularly in patients who have not received prior treatment. At the molecular level, odronextamab works by targeting and binding to CD20 and CD3 proteins, which are found on the surface of certain immune cells, helping the immune system to attack and destroy cancer cells. It is classified pharmacologically as a bispecific antibody, which means it can simultaneously bind to two different types of antigens.

Investigated diseases

Follicular lymphoma – Follicular lymphoma is a type of non-Hodgkin lymphoma that typically arises from B-lymphocytes, a kind of white blood cell. It is characterized by slow growth and often presents with painless swelling of lymph nodes. The disease can progress over time, sometimes transforming into a more aggressive form of lymphoma. Symptoms may include fatigue, night sweats, and unexplained weight loss. It is often diagnosed in older adults and can be found in multiple lymph nodes or organs at the time of diagnosis. The progression of follicular lymphoma can vary greatly among individuals, with some experiencing long periods without symptoms.
Trial detailsLast updated 2 Oct 2026
Age18+ yearsPhasePhase IIITrial ID2022-502660-20-00Protocol codeR1979-HM-2298Estimated enrolment822 patientsSponsorRegeneron Pharmaceuticals Inc.

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