Overall survival according to prognostic factors. (A) According to age: 18-45 years (solid line), 30% ± 5% after 1 year, 16% ± 4% after 3 years (N = 98); older than 45 years (dashed line), 7% ± 5% after 1 year, 0% after 3 years (N = 28). P = .0007. (B) According to subtype. Thymic T-ALL (solid line), 36% ± 7% after 1 year, 17% ± 6% after 3 years (N = 45); and early/mature T-ALL (dashed line), 18% ± 6% after 1 year, 10% ± 5% after 3 years (N = 46). P = .03