RecruitingPhase 2Drug trialZanubrutinib Plus Rituximab as Front-line Treatment for Mucosa-associated Lymphoid Tissue Lymphoma (MALT)This is a prospective, single-arm, multicenter, phase II clinical trial to evaluate the efficacy and safety of Zanubrutinib in combination with Rituximab as a first-line treatment for patients with mucosa-associated lymphoid tissue (MALT) extranodal marginal zone lymphoma.