The authors evaluated the treatment approaches and outcomes of 110 patients with primary plasma cell leukemia (pPCL) in this retrospective study . Higher complete response rates were associated with treatment with bortezomib, lenalidomide, and dexamethasone (VRd) or daratumumab-based quadruplets (DBQ) and autologous stem-cell transplantation. Patients who received VRd/DBQ had better outcomes than those who received other bortezomib-based combinations or standard chemotherapy.