Figure 1

Kaplan-Meier method depicting overall survival (OS) and progression-free survival (PFS) both in all patients and patients grouped by AJCC stage, stratified according to the age of onset. (a) Survival analysis of OS in stage I/II patients, (b) Survival analysis of PFS in stage I/II patients, (c) Survival analysis of OS in stage III/IV patients, (d) Survival analysis of PFS in stage III/IV patients, (e) Survival analysis of OS in all patients and (f) Survival analysis of PFS in all patients.