RecruitingDrug trialAcalabrutinib Maintenance for the Treatment of Patients With Large B-cell LymphomaThis phase Ib/II trial studies the side effects and efficacy of maintenance acalabrutinib following cellular therapy in treating patients with large B-cell lymphoma at very high risk of the cancer coming back. Acalabrutinib is a small molecular inhibitor that may interfere with the ability of cancer cells to grow and spread.