Pirtobrutinib demonstrated promising efficacy and a tolerable safety profile in heavily pretreated patients with relapsed/refractory mantle cell lymphoma who received prior therapy with a covalent BTK inhibitor.
Treatment with single-agent pirtobrutinib showed encouraging efficacy with a tolerable safety profile in a cohort of heavily pretreated patients with relapsed/refractory follicular lymphoma.
Patients with chronic lymphoctyic leukemia treated with pirtobrutinib monotherapy experienced comparable objective response rates regardless of acquired BTK mutation and a decrease or clearance of BTK cysteine 481 clones despite the emergence of non-C481 clones or other less common mutations during or near the time of progression.
Prioty Islam, MD, MSc, discusses findings from the BRUIN trial, highlights the potential benefits of using noncovalent BTK inhibitors instead of or before covalent BTK inhibitors in patients with MCL or CLL, and previewed ongoing clinical trials investigating this class of agents in earlier treatment lines in these populations.