PRKCA and acute lymphoblastic leukemia: Application of the calculated threshold categorized T-ALL patients into two groups with a significant difference in the incidence of relapse: 4-year CIR was 43.8% (standard error [SE] 6.78) and 10.9% (SE 3.27) in patients whose PKCα expression values were lower and higher than 0.12, respectively (P<0.001) (Figure 1A).