Comparison of the frequencies of gene aberrations and genetic subtypes between BCP-LBL and BCP-ALL. The most frequently mutated genes in the present BCP-LBL cohort were compared with the mutational frequencies of these genes in 608 patients with BCP-ALL by Brady et al.⁷ The asterisk indicates statistically significant differences between mutational frequency in BCP-LBL and BCP-ALL (∗P < .05; ∗∗P < .005).