Fig. 4: PFS.

Kaplan–Meier estimate of PFS in ITT population (a) and by switch status (b). PFS was defined as the time from randomization to transformation to CML-AP/BC or death, whichever occurred first. All patients who discontinued study treatment were followed for progression and survival unless consent was withdrawn. CI confidence interval, ITT intent-to-treat, NE not evaluable, PFS progression-free survival.