Fig. 1: Expression pattern and overall prognostic impact of CD9 in childhood ALL.

A Raincloud plots showing the distribution of CD9 expression among B-ALL (n = 3395) and T-ALL (n = 386) cases. The positivity cut-off was set to 20% as determined by univariate analyses. B, C Kaplan–Meier analyses of 5-year event-free survival (EFS, left panel) and cumulative incidence of relapse (CIR, right panel) in B-ALL and T-ALL patients stratified by CD9 expression status. The number of patients at risk/censored over time, rates of EFS and CIR with standard errors, and P values are indicated.