This clinical trial is focused on studying a condition known as Richter Transformation, which occurs in some patients with Chronic Lymphocytic Leukemia (CLL). The study is exploring the effectiveness and safety of a combination of treatments. These treatments include Zanubrutinib (also known by its code name BGB-3111), which is a type of medication called a BTK inhibitor, and Tislelizumab (BGB-A317), a PD-1 inhibitor. Additionally, the study will evaluate the use of Sonrotoclax (BGB-11417), a BCL2 inhibitor, in some patients.
The purpose of the study is to assess how well these medications work together in treating patients with Richter Transformation. Participants in the study will receive these medications either in combination or separately, depending on the study group they are assigned to. The study will monitor the patients over a period to observe the effects of the treatment on their condition.
Throughout the study, patients will be given the medications in specific forms: Zanubrutinib is taken as a capsule, Tislelizumab is administered as a solution for infusion, and Sonrotoclax is provided as a film-coated tablet. The study aims to provide valuable information on the potential benefits and safety of these treatments for patients with Richter Transformation.



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