Phase 2 Study of Oral Pirtobrutinib for Relapsed or Refractory Chronic Lymphocytic Leukemia and Small Lymphocytic Lymphoma After BTK Inhibitor Treatment

What this Trial Is About

Researchers are studying pirtobrutinib, an oral drug, to understand how well it works and how safe it is for people with chronic lymphocytic leukemia CLL or small lymphocytic lymphoma SLL. The study focuses on participants who have previously received 1 to 3 treatments, including a covalent Bruton tyrosine kinase BTK inhibitor, as well as those with treatment-nafve CLLSLL who have a specific genetic change called 17p deletion. This is a Phase 2 open-label trial sponsored by Loxo Oncology, Inc. The study has two parts. Part 1 tests three different dose levels of pirtobrutinib in participants with relapsed or refractory CLLSLL who have prior treatment experience, lasting about 3 years. Part 2 evaluates pirtobrutinib alone in participants who have not received prior treatment but have the 17p deletion, with participation lasting up to 2 years. All doses are given orally. Participants will take the study drug orally and attend visits for up to 3 years in Part 1 or up to 2 years in Part 2. Researchers will monitor how well the disease responds to treatment using overall response rate and how long the response lasts. Safety will be tracked throughout. Participants ability to swallow oral medication and their overall health status will be assessed before and during the study to ensure suitability and safety.

A Study Evaluating the Efficacy and Safety of Pirtobrutinib in Participants With Relapsed or Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma