IKZF1 and precursor B-cell acute lymphoblastic leukemia: (59) compared the 5-year cumulative incidence of relapse (CIR) of Malaysia–Singapore MS2003 (n = 507) and MS2010 (n = 316) of pediatric B-ALL; the findings revealed that the loss of IKZF1 strongly correlated with a higher 5-year CIR (20.5% vs. 8.0%, P = 0.01) in MS2003.