BALL Score for Relapsed/Refractory CLLLoading...β2-microglobulin< 5 mg/dl0≥ 5 mg/dL+1AnemiaNo0Yes+1LDH≤ upper limit of normal0> upper limit of normal+1Last therapy (time from initiation)≥ 24 months0< 24 months+1适用指征洞见与注意事项