In this video, Michael Wang, MD, University of Texas MD Anderson Cancer Center, Houston, TX, highlights some results from the Phase I/II BRUIN study (NCT03740529) investigating the use of pirtobrutinib, a next generation non-covalent Bruton’s tyrosine kinase (BTK) inhibitor, in previously untreated mantle cell lymphoma (MCL). Dr Wang discusses the patient cohort in this study, as well as the response rates observed, and compares this to covalent BTK inhibitors, including ibrutinib, acalabrutinib, and zanubrutinib. Dr Wang concludes by highlighting the safety profile of pirtobrutinib, and the impact that this drug may have on the future treatment of BTK-resistant patients. This interview took place at the 63rd ASH Annual Meeting and Exposition congress in Atlanta, GA, 2021.