Evaluating zanubrutinib for treating Waldenström Macroglobulinemia

A Phase 4, Observational Study Evaluating the Efficacy and Safety of the Bruton Tyrosine Kinase (BTK) Inhibitor Zanubrutinib in Patients With Waldenström Macroglobulinemia

Observational BeOne Medicines · NCT05640102

This study is testing how well zanubrutinib works and how safe it is for people with Waldenström macroglobulinemia, especially those with certain genetic traits and from different backgrounds.

Quick facts

Study typeObservational
Enrollment111 (estimated)
Ages18 Years and up
SexAll
SponsorBeOne Medicines Industry-sponsored
Drugs / interventionszanubrutinib
Locations8 sites (Huntsville, Alabama and 7 other locations)
Trial IDNCT05640102 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess the efficacy and safety of zanubrutinib in patients diagnosed with Waldenström macroglobulinemia, focusing on those with specific genetic mutations and from diverse racial and ethnic backgrounds. It utilizes a hybrid approach, combining retrospective and prospective data collection to create a comprehensive registry. The study will gather clinical profiles and treatment outcomes to enhance understanding of zanubrutinib's benefits in these populations.

Who should consider this trial

Good fit: Ideal candidates include individuals with a confirmed diagnosis of Waldenström macroglobulinemia who are currently being treated with or are planned to be prescribed zanubrutinib.

Not a fit: Patients with evidence of disease transformation or other active malignancies may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the effectiveness of zanubrutinib for diverse patient groups with Waldenström macroglobulinemia.

How similar studies have performed: While this study focuses on a specific population, similar observational studies have shown promise in understanding treatment efficacy in diverse groups.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Clinical and definitive histologic diagnosis of WM
* Measurable disease, as defined by a serum immunoglobulin M (IgM) level \> 0.5 g/dL at the time of zanubrutinib initiation
* Started treatment with zanubrutinib, has been treated with zanubrutinib, or is planned to be prescribed zanubrutinib for the treatment of WM
* Bone marrow specimens with central MYD88 test results of:

  1. Cohort 1: MYD88 L265P mutation; enrollment of TN participants will be stopped in each racial and ethnic participant group when the required numbers of participants in the group are met
  2. Cohort 2: non-L265P MYD88 mutation(s) and MYD88WT

Exclusion Criteria:

* Evidence of disease transformation before the first dose of zanubrutinib
* Evidence of other non-Hodgkin Lymphoma (NHL) subtypes
* Prior or concurrent active malignancy ≤ 2 years before the first dose of zanubrutinib, except for malignancies that, in the investigator's opinion, will not obscure the interpretation of safety or efficacy results
* Concurrent participation in another therapeutic clinical study while receiving zanubrutinib, although the participant may be eligible depending on the status of the interventional study after discussion with the Medical Monitor or designee on an individual basis

Where this trial is running

Huntsville, Alabama and 7 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Waldenstrom Macroglobulinemia
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.