Probability of survival of patients with Philadelphia chromosome–negative ALL based on methylation of p73, p15, and p57KIP2.

(A) Probability of survival of patients with methylation of 0, 1, 2, or 3 genes. (B) Probability of survival of patients with methylation of 0 or 1 gene versus methylation of 2 or more genes. Vertical marks represent censored data.