CD19 and cancer: Furthermore, DRS was strongly associated with cancer stem cell markers [20], including CD19 (R = 0.32; p < 1.9e-13) (Figure 10B), CD44 (R = 0.21; p = 1.4e-06) (Figure 10C), and SOX2 (R = 0.29; p = 2.2e-11) (Figure 10D).