The significant B-ALL outcome predictors were WBC count (P = 0.023), immunophenotype (OR = 2.6, 95% CI = 1.4–5.1, P = 0.004), DEFA1-T1 (OR = 6.1, 95% CI = 1.01–36.9, P = 0.049), and FLT3-T2 (OR = 8.6, 95% CI = 1.1–69.3, P = 0.043), respectively. This evidence concerns the gene FLT3 and acute lymphoblastic leukemia.