CD38 and acute lymphoblastic leukemia: On the other hand, there was no significant correlation also when CD38 expression (a receptor preferentially expressed at both early and late stages of the B and T-cell maturation) and CD10 expression (one of the most significant cell surface marker in the diagnostic of human acute lymphocytic leukemia) were compared to the level of sCTLA-4 (r = 0.0647, p = 0.73, and r = 0.1022, p = 0.53 respectively) (Fig. 3, panels B and C respectively).