Normal B-cell recovery after last anti-CD20 mAb. In panel A, times after the last mAb treatments were <0.5 years (n = 38, ○), 0.5 to 1 year (n = 28; •), 1 to 1.5 years (n = 24; ▵), 1.5 to 2 years (n = 14; ▲), and >2 years (n = 172; ⋄). In panel B, times after the last mAb treatments were >2 years (n = 172; ◊), 1 to 2 years (n = 38; ○), 2 to 4 years (n = 30; □), 4 to 6 years (n = 29; ▪), and >4 years (n = 142; ▿). Two-sided P values calculated by the Mann-Whitney U test are shown between compared groups. Normal B cells were lower at 0.5 to 1 year than 1 to 2 years (P < .0001).