MRD kinetics and survival. (A) Swimmer plot representing the different therapies and MRD levels (<1% and ≥1% CLL cells of all leukocytes) over time for 12 patients with high-risk CLL. (B) Kaplan-Meier curve depicting the OS of the 12 observed patients, with median OS time not reached. mAb, monoclonal antibody; OS, overall survival.