Maintenance Obinutuzumab in Treating Patients With Central Nervous System Lymphoma Who Have Achieved a Complete or Partial Response

June 4, 2025 updated by: Providence Health & Services

Maintenance Obinutuzumab for Primary Central Nervous System Lymphoma Complete or Partial Responders

This randomized phase II trial studies how well obinutuzumab works as maintenance treatment in patients with central nervous system lymphoma who have achieved the disappearance of all signs of cancer in response to treatment (complete response) or a decrease in the size of a tumor, or in the extent of cancer in the body, in response to treatment (partial response). Immunotherapy with obinutuzumab, may induce changes in body's immune system and may interfere with the ability of tumor cells to grow and spread.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

PRIMARY OBJECTIVE:

I. To determine the effect of maintenance obinutuzumab on duration of response (partial response [PR] or complete response [CR]) in patients with CD20+ B-cell primary central nervous system lymphoma (PCNSL) who attain PR or CR to first-line treatment with high-dose methotrexate-based chemotherapy.

SECONDARY OBJECTIVES:

I. To evaluate overall survival after PR or CR (overall survival [OS]-PRCR). II. To evaluate neurocognitive function, quality of life, and neuroimaging as indicators of neurotoxicity.

III. Progression-free survival (PFS) and overall survival (OS) will be calculated.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I (MAINTENANCE THERAPY): Patients receive obinutuzumab intravenously (IV) on days 1 and 2 for the first cycle, and on day 1 for the subsequent cycles. Cycles repeat every 60 days for 2 years in the absence of disease progression or unacceptable toxicity.

ARM II (OBSERVATION): Patients undergo observation for a total of 2 years.

Study Type

Interventional

Enrollment (Estimated)

28

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • United States
    • New York
      • New York, New York, United States, 10065
        • Not yet recruiting
        • Memorial Sloan Kettering Cancer Center
        • Contact:
        • Principal Investigator:
          • Christian Grommes, MD
    • Ohio
      • Cleveland, Ohio, United States, 44195
        • Not yet recruiting
        • Cleveland Clinic
        • Principal Investigator:
          • David Peereboom, MD
        • Contact:
    • Oregon
      • Portland, Oregon, United States, 97225
        • Recruiting
        • Providence Health & Services; Providence Neurological Specialties
        • Principal Investigator:
          • Prakash Ambady, MD
        • Contact:
        • Contact:
    • Pennsylvania
      • Hershey, Pennsylvania, United States, 17033
    • Vermont
    • Virginia
      • Charlottesville, Virginia, United States, 22903
        • Recruiting
        • University of Virginia
        • Principal Investigator:
          • David Schiff, MD
        • Contact:
        • Contact:
    • Washington
      • Seattle, Washington, United States, 98122
        • Recruiting
        • Ivy Center for Advanced Brain Tumor Treatment; Swedish Neuroscience Institute
        • Contact:
        • Contact:
        • Principal Investigator:
          • Alipi Bomn, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • CD20+ B-cell primary central nervous system lymphoma (PCNSL) confirmed at the time of diagnosis by histology, cytology, or immunocytochemistry from cerebrospinal fluid (CSF); diagnosis must be documented by pathology report.
  • Must have undergone first-line treatment with a high-dose methotrexate-based chemotherapy regimen with or without brain radiotherapy; high-dose methotrexate is defined as >= 3 grams/m^2; methotrexate dose reduction for creatinine clearance < 100 ml/min is permitted
  • Must be within 75 days of completion of first-line treatment regimen at the time of randomization; must have achieved objective response (PR or CR/unconfirmed complete response [CRu]) to first-line treatment
  • Brain magnetic resonance imaging (MRI) documenting objective response must be obtained within 30 days before randomization
  • If CSF was positive for lymphoma cells at diagnosis or during first-line treatment and/or a slit lamp examination was positive at diagnosis or during first-line treatment, then the CSF and vitreal studies must have been repeated and must have indicated CR; Note: CR requires complete disappearance of all enhancing abnormalities on gadolinium-enhanced MRI; if CSF was positive for lymphoma cells at diagnosis or during first-line treatment and/or slit lamp examination was positive at diagnosis or during first-line treatment, then the CSF and vitreal studies must have been repeated and must have indicated CR; for CRu, some patients will have a small but persistent enhancing abnormality on MRI related to biopsy or focal hemorrhage; it is often difficult to ascertain whether this represents a residual nidus of tumor or scar tissue; if the abnormality does not change or slowly involutes without therapy and corticosteroids, it is reasonable to categorize as a CRu; at the time CR/CRu is determined, the patient should not have used corticosteroids for at least two weeks
  • Karnofsky performance status (KPS) >= 60; Eastern Cooperative Oncology Group (ECOG) 0, 1, or 2
  • Signed informed consent form (ICF)
  • Ability and willingness to comply with the requirements of the study protocol
  • Total bilirubin < 3 x the upper limit of normal (ULN), ≤ 7 days before date of randomization
  • Creatinine clearance > 30 mL/min (calculated according to institutional standards or using Cockcroft-Gault formula), ≤ 7 days before date of randomization
  • Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) ≤ 5 x ULN, ≤7 days before date of randomization
  • Platelet ≤ 75,000 cells/mm^3, ≤ 7 days before date of randomization
  • Hemoglobin > 9 g/dL, ≤ 7 days before date of randomization
  • Absolute neutrophil count > 1.5 x 10^3 cells/mm^3, ≤ 7 days before date of randomization
  • Surgically sterile or agree to use effective contraception using an adequate measure of contraception such as oral contraceptives, intrauterine device, or barrier method of contraception in conjunction with spermicidal jelly while receiving obinutuzumab and >= 18 months after the last dose of obinutuzumab for women, and 180 days after the last dose of obinutuzumab for men

Exclusion Criteria:

  • History of severe allergic or anaphylactic reactions to monoclonal antibody therapy
  • Clinical evidence of extra-central nervous system (CNS) (systemic) non-Hodgkin lymphoma
  • Known hypersensitivity to any of the study drugs
  • History of other malignancy that could affect compliance with the protocol or interpretation of results
  • Patients with a history of curatively treated basal or squamous cell carcinoma of the skin or in situ carcinoma of the cervix are generally eligible; patients with a malignancy that has been treated, but not with curative intent, will also be excluded, unless the malignancy has been in remission without treatment for >= 2 years prior to randomization
  • Known active bacterial, viral, fungal, mycobacterial, or other infection (excluding fungal infections of nail beds) or any major episode of infection requiring treatment with IV antibiotics or hospitalization (related to the completion of the course of antibiotics) within 4 weeks prior to study randomization
  • Major surgery within 4 weeks prior to study randomization
  • Known infection with human immunodeficiency virus (HIV)
  • Positive hepatitis serologies:
  • Hepatitis B (HBV): patients with positive serology for hepatitis B defined as positivity for hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (anti-HBc); patients who are positive for anti-HBc may be considered for inclusion in the study on a case-by-case basis if they are hepatitis B viral deoxyribonucleic acid (DNA) negative and are willing to undergo ongoing HBV DNA testing by real-time polymerase chain reaction (PCR); patients with positive serology may be referred to a hepatologist or gastroenterologist for appropriate monitoring and management
  • Hepatitis C (HCV): patients with positive hepatitis C serology unless HCV ribonucleic acid (RNA) is confirmed negative and may be considered for inclusion in the study on a case-by-case basis
  • Women who are pregnant or lactating
  • Vaccination with a live vaccine a minimum of 4 weeks prior to study randomization

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Arm II (observation)
Patients undergo observation for a total of 2 years.
Procedure: Cognitive Assessment
Ancillary studies to evaluate neurocognitive function at study entry and at 2 years after study entry.
Other: Quality of Life Assessment
Ancillary studies to evaluate quality of life at study entry and at 2 years after study entry.
Experimental: Arm I (obinutuzumab
Patients receive obinutuzumab IV on days 1 and 2 for the first cycle, and on day 1 for the subsequent cycles, and on day 1 for the subsequent cycles. Cycles repeat every 60 days for 2 years in the absence of disease progression or unacceptable toxicity.
Biological: Obinutuzumab
Given IV
Other Names:
  • Gazyva
  • RO5072759
  • GA101
  • Anti-CD20 Monoclonal Antibody R7159
  • GA-101
  • R7159
  • RO 5072759
  • RO-5072759
  • huMAB (CD20)
Procedure: Cognitive Assessment
Ancillary studies to evaluate neurocognitive function at study entry and at 2 years after study entry.
Other: Quality of Life Assessment
Ancillary studies to evaluate quality of life at study entry and at 2 years after study entry.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Partial response (PR) or complete response (CR) duration
Time Frame: From the date of brain magnetic resonance imaging (MRI) after completion of first-line treatment which confirms PR or CR, to disease progression or death, assessed up to 2 years
PR or CR duration will be assessed using Kaplan-Meier product limit estimates and compared between patients with maintenance versus without obinutuzumab maintenance using the log-rank test. In addition, the Cox proportional hazard model will be used to estimate hazard ratios.
From the date of brain magnetic resonance imaging (MRI) after completion of first-line treatment which confirms PR or CR, to disease progression or death, assessed up to 2 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Overall survival (OS) after CR
Time Frame: From the date of brain MRI after completion of first-line treatment which confirms PR or CR, to death, assessed up to 2 years
OS after PR or CR will be assessed using Kaplan-Meier product limit estimates and compared between patients with maintenance versus without obinutuzumab maintenance using the log-rank test. In addition, the Cox proportional hazard model will be used to estimate hazard ratios.
From the date of brain MRI after completion of first-line treatment which confirms PR or CR, to death, assessed up to 2 years
Progression free survival (PFS)
Time Frame: From the start date of first-line primary central nervous system lymphoma (PCNSL) treatment to disease progression or death, assessed up to 2 years
PFS will be assessed using Kaplan-Meier product limit estimates and compared between patients with obinutuzumab maintenance versus without maintenance using the log-rank test. Longitudinal data of neurocognitive function and QOL will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
From the start date of first-line primary central nervous system lymphoma (PCNSL) treatment to disease progression or death, assessed up to 2 years
Neurocognitive function - Wechsler Adult Intelligence Scale
Time Frame: Up to 2 years
Will be measured by the Wechsler Adult Intelligence Scale. Scale range 0 to 16 Forward; 0 to 14 Backward. Higher the score means better outcome. Longitudinal data of neurocognitive function will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
Up to 2 years
Quality of life (QOL) - European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Brain Neoplasm 20-item
Time Frame: Up to 2 years
Will be measured by the European Organization for Research and Treatment of Cancer Quality of Life Brain Cancer Module-20 (EORTC QLQ-BN20) questionnaire. Scale 20 to 80 points. Higher score means worse outcome. Longitudinal data of QOL will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
Up to 2 years
Overall survival
Time Frame: From the start date of first-line PCNSL treatment to death, assessed up to 2 years.
OS will be assessed using Kaplan-Meier product limit estimates and compared between patients with obinutuzumab maintenance versus without maintenance using the log-rank test. Longitudinal data of neurocognitive function and QOL will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
From the start date of first-line PCNSL treatment to death, assessed up to 2 years.
Neurocognitive function - Hopkins Verbal Learning Test-Revised
Time Frame: Up to 2 years
Will be measured by the Hopkins Verbal Learning Test-Revised. Test evaluates total recall, delayed recall, percent of retention, and recognition. Higher score means better outcome. Longitudinal data of neurocognitive function will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
Up to 2 years
Neurocognitive function - Grooved Pegboard Test
Time Frame: Up to 2 years
Will be measured by the Grooved Pegboard Test. Scale 0 seconds to time of completion in minutes and seconds. Higher time to completion means worse outcome. Longitudinal data of neurocognitive function will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
Up to 2 years
Neurocognitive function - Trail Making Test
Time Frame: Up to 2 years
Will be measured by the Trail Making Test. Scale Part A: 0 seconds to 100 seconds (time of greater than 100 seconds discontinues the test. Scale Part B: 0 seconds to 300 seconds (time of greater than 300 seconds discontinues the test. Number of errors recorded. Higher time to completion and greater number of errors means worse outcome. Longitudinal data of neurocognitive function will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
Up to 2 years
Neurocognitive function - Brief Test of Attention
Time Frame: Up to 2 years
Will be measured by the Trail Making Test. Scale 0 to 20 points. Higher score mean better outcome. Longitudinal data of neurocognitive function will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
Up to 2 years
Quality of life (QOL) - European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30-item
Time Frame: Up to 2 years
Will be measured by the European Organization for Research and Treatment of Cancer Quality of Life Core 30-item (EORTC QLQ-C30) questionnaire. Scale 30 to 126 points. Higher score means worse outcome. Longitudinal data of QOL will be analyzed using a linear mixed model and toxicity indicators will be assessed using a chi-square or exact test.
Up to 2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Providence Health & Services

Investigators

  • Principal Investigator: Prakash Ambady, MD, Providence Health & Services

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 13, 2024

Primary Completion (Estimated)

September 15, 2028

Study Completion (Estimated)

September 15, 2029

Study Registration Dates

First Submitted

June 28, 2023

First Submitted That Met QC Criteria

December 8, 2023

First Posted (Actual)

December 18, 2023

Study Record Updates

Last Update Posted (Estimated)

June 5, 2025

Last Update Submitted That Met QC Criteria

June 4, 2025

Last Verified

June 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PHS-OB-PCNSL-01
  • ML29496 (Other Identifier: Genentech, Inc.)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Primary Central Nervous System Lymphoma

Clinical Trials on Obinutuzumab

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Singapore

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe