RecruitingDrug trialObservational Study Evaluating the Efficacy and Safety of Zanubrutinib in Participants With Waldenström MacroglobulinemiaThis is a hybrid (retrospective and prospective) non-interventional registry study to further describe the clinical profile of zanubrutinib in Waldenström macroglobulinemia (WM) participants with and without specific mutations and from racial and ethnic minority groups. Data collected from this registry study will be used to better understand the clinical benefit and safety of zanubrutinib for the treatment of participants in these populations.