A Phase II Clinical Study of Zanubrutinib Combined With Four Cycles of CD20 Monoclonal Antibody and Reduced-Dose Bendamustine in the Treatment of Untreated Waldenström Macroglobulinemia
ZBR in WM
Sponsor study identifier
interventional
43
1 country
2
Study Start
December 30, 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
June 30, 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
June 30, 2032
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
This study is a prospective phase II clinical trial designed to evaluate the deep response rate of the ZBR regimen (zanubrutinib combined with reduced-dose bendamustine and CD20 Monoclonal Antibody ) in treatment-naïve symptomatic Waldenström macroglobulinemia (WM) patients. Eligible patients will receive four cycles of the ZBR regimen, followed by zanubrutinib monotherapy for an additional eight months. The assessment period spans from the initiation of treatment until 12 months after treatment completion, with efficacy evaluations conducted every three cycles. Patients will be withdrawn from the study if they experience disease progression (PD) or show no response to treatment. Minimal residual disease (MRD) assessments will be performed at the end of the 3rd and 6th treatment cycles, as well as 12 months after treatment completion, involving evaluations of both bone marrow and peripheral blood MRD rates
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
June 30, 2032
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
November 14, 2025
Actual (reported)December 2, 2025
Actual (reported)December 30, 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
June 30, 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
June 30, 2032
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Best deep response rate(≥VGPR)
defined as the rate of very good partial response VGPR or CR
up to 1 year
MRD Negativity Rate at End of Treatment
up to the end of treatment
Duration of Response
up to 3 years
Objective Response Rate (ORR)
up to 1 year
Complete Response (CR) Rate
up to 1 year
Major Response Rate (MRR, ≥ Partial Response)
up to 1 year
Patients in the experimental group will receive treatment in 4-week cycles, totaling 4 cycles of zanubrutinib + bendamustine + CD20 Monoclonal Antibody therapy, followed by 8 months of zanubrutinib monotherapy maintenance. Specific regimen: Zanubrutinib: Oral administration starts on Day 1 of Cycle 1 and continues continuously at 160 mg twice daily. Bendamustine: Intravenous infusion at 70 mg/m² on Days 1-2 of Cycles 1-4. CD20 Monoclonal Antibody: Intravenous infusion at 375 mg/m² on Day 0 of Cycles 1-4. After completing the 4-cycle combination therapy, a systematic efficacy evaluation will be conducted.
These entries preserve how the registry describes the intervention. Their treatment roles are shown separately from molecular identities.
Grouped treatment entry
Zaunbrutinib, Bendamustine and Rituximab for induction therapy
The registry names several treatments. This does not confirm that participants received them together or that they form a single product.
View registry recordTreatment programme
Zanubrutinib mono therapy for maintenance treatment
The registry describes a treatment programme. Individual components, doses and actual administration are not established by this entry.
View registry recordChina Institute of Hematology and Blood Diseases Hospital ,Chinese Academy of Medical Sciences
Tianjin, China, 300020, China
Institute of Hematology & Blood Diseases Hospital, China
Tianjin, Tianjin Municipality, 300020, China
Shuhua Yi
Institute of Hematology & Blood Diseases Hospital, China
First Submitted
November 14, 2025
First Posted
December 2, 2025
Study Start
December 30, 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
June 30, 2028
EstimatedPatients will then continue with zanubrutinib monotherapy maintenance for 8 months before treatment discontinuation.
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Contact the study team to confirm eligibility.
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
June 30, 2032
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
December 2, 2025
Record last verified: 2025-11
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Source: ClinicalTrials.gov.
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