RecruitingPhase 2Drug trialPhase II Study of Pirtobrutinib With Venetoclax In Relapsed-Refractory MCL (Mantle Cell Lymphoma) PatientsTo learn if the combination of pirtobrutinib (also called LOXO-305) and venetoclax can help to control mantle cell lymphoma (MCL) that is relapsed (has come back) or refractory (has not responded to therapy).