NCT06453044 · City of Hope Medical Center
Mosunetuzumab and Polatuzumab Vedotin for the Treatment of Patients With Relapsed or Refractory Grade 1-3a Follicular Lymphoma
What this study is about
This phase II trial tests how well mosunetuzumab and polatuzumab vedotin works in treating patients with grade 1-3a follicular lymphoma that has come back after a period of improvement (relapsed) or that has not responded to previous treatment (refractory). Mosunetuzumab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread.
View original scientific description
This phase II trial tests how well mosunetuzumab and polatuzumab vedotin works in treating patients with grade 1-3a follicular lymphoma that has come back after a period of improvement (relapsed) or that has not responded to previous treatment (refractory). Mosunetuzumab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread. Polatuzumab vedotin is a monoclonal antibody, polatuzumab, linked to a toxic agent called vedotin.
Interventions
PROCEDURE
Biospecimen Collection
Undergo blood sample collection
PROCEDURE
Computed Tomography
Undergo CT or PET/CT
PROCEDURE
Magnetic Resonance Imaging
Undergo MRI
BIOLOGICAL
Mosunetuzumab
Given SC
DRUG
Polatuzumab Vedotin
Given IV
PROCEDURE
Positron Emission Tomography
Undergo PET/CT
OTHER
Questionnaire Administration
Ancillary Studies
Primary outcome measures
Incidence of grade 3 or higher adverse events (AEs)
Time frame: Up to completion of first 2 cycles of treatment - each cycle is 28 days
Unacceptable toxicity will be defined as events occurring during the first 2 cycles of treatment that is at least possibly related to study treatment. Observed toxicities will be summarized by type, severity, and attribution.
Complete response (CR) rate
Time frame: Up to 36 months after last dose of protocol therapy
CR rate will be defined as the proportion of response-evaluable participants that achieve a best response of CR after the start of protocol therapy and prior to disease progression and/or start of other anti-lymphoma therapy. CR rate will be estimated along with the 95% exact binomial confidence interval.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Documented informed consent of the participant and/or legally authorized representative
- Assent, when appropriate, will be obtained per institutional guidelines
- Be willing to provide tissue from a fresh core or excisional biopsy (performed as standard of care) of a tumor lesion prior to starting study therapy or from diagnostic tumor biopsies
- If unavailable, exceptions may be granted with study principal investigator (PI) approval
- Age: ≥ 18 years
- Eastern Cooperative Oncology Group (ECOG) ≤ 2
- Histologically confirmed diagnosis of follicular lymphoma grade 1-3a according to the World Health Organization (WHO) classification. Note: A history of diffuse large B-cell lymphoma (DLBCL) and/or grade 3b follicular lymphoma is allowed (follicular large B-cell lymphoma in the WHO 5th classification of mature B-cell lymphoma) but these cannot be present at the time of study enrollment. Enrollment of any such cases on this study must receive prior approval by
Where
- Duarte, California
- Irvine, California
Collaborators
National Cancer Institute (NCI)
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 24, 2025 · Source of record for eligibility and locations