TNFSF13B and acute lymphoblastic leukemia: Mean levels of soluble BAFF are significantly higher in B-ALL patients in comparison to control specimens (Figure 2E; p = 0.0006; B-ALL, mean 17.68 ng/mL, range 2.4–130.0 ng/mL; controls, mean 4.81 ng/mL, range 1.0–18.0 ng/mL).