Summary
The main purpose of this study is to assess the efficacy and safety of 3 dose levels of
Pirtobrutinib in participants with relapsed or refractory chronic lymphocytic leukemia
(CLL) or small lymphocytic lymphoma (SLL), who have received 1-3 lines of treatment
including a covalent Bruton tyrosine kinase (BTK) inhibitor. The study is expected to
last approximately 3 years.