Figure 1

Kaplan–Meier curves of OS and PFS according to the IPI and PIT. (a,b) OS (a) and PFS (b) according to the IPI. (c,d) OS (c) and PFS (d) according to the PIT. OS overall survival, PFS progression-free survival, IPI International Prognostic Index, PIT Prognostic Index for PTCL-U.