Agathangelidis A, Chatzikonstantinou T, Stamatopoulos K. B-cell receptor immunoglobulin stereotypy in chronic lymphocytic leukemia: Key to understanding disease biology and stratifying patients. Semin Hematol. 2024 Apr;61(2):91-99; doi: 10.1053/j.seminhematol.2023.12.005