The goal of this study is to compare how well sonrotoclax plus zanubrutinib works versus zanubrutinib plus placebo in treating adults with relapsed/refractory (R/R) mantle cell lymphoma (MCL). This study will also look at the safety of sonrotoclax plus zanubrutinib versus zanubrutinib plus placebo.
Histologically locally confirmed diagnosis of MCL based on the World Health Organization 2022 classification of Haematolymphoid Tumors (WHO-HAEM5), or based on International Consensus Classification (ICC)
Ability to provide archival or fresh tumor tissue for retrospective central confirmation of MCL diagnosis
Received 1 to 5 prior lines of systemic therapy including an anti-CD20 monoclonal antibody (mAb)-based immunotherapy or chemoimmunotherapy and requiring treatment in the opinion of the investigator
Relapsed or refractory disease after the last line of therapy
Prior therapy with B-cell lymphoma-2 inhibitor (BCL2i)
Prior therapy with BTK degraders
Prior therapy with covalent or non-covalent Bruton tyrosine kinase inhibitor (BTKi) unless the participant was intolerant of non-zanubrutinib covalent or non-covalent BTKi. Participants with refractory disease to BTKi therapy or relapse attributed to failure of BTKi therapy are ineligible.
Prior autologous stem cell transplantation or chimeric antigen receptor T-cell therapy within 3 months before first dose of study drug