A Phase I Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of ICP-248 as Monotherapy or in Combination With Anti-CD20 Monoclonal Antibody in Patients With Mature B-cell Malignancies

1. Age ≥ 18. 2. Subjects with histopathologically and/or flow cytometry-confirmed diseases according to the 2016 World Health Organization (WHO) classification criteria for lymphohematopoietic neoplasms or meeting the International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria: relapsed or refractory CLL/SLL, relapsed or refractory MCL. Patients must have received at least two prior lines of adequate systemic therapy before study entry, and at least one prior systemic therapy should include Bruton's kinase inhibitor (BTKi). 3. For subjects with R/R MCL: Patients must have measurabl…