This is a randomized study to compare the efficacy and safety of zanubrutinib plus rituximab versus bendamustine plus rituximab in previously untreated participants with mantle cell lymphoma (MCL) who are not eligible for stem cell transplantation.

The purpose of this study is to determine the most appropriate dose for the combination of ibrutinib and pembrolizumab and to see if the combination is active for the disease. The study will monitor for any side effects and if the combination of ibrutinib and pembro...