LCN2 and B-cell chronic lymphocytic leukemia: Patients in relapse (median: 90.7 ng/mL) showed levels of NGAL higher than those of the healthy group (median: 61.82 ng/mL; p = 0.049), and similar to those of the untreated CLL patients (median: 95.94 ng/mL, p = 0.727) (Figure 1A).