Kaplan-Meier plot of event-free survival in R/I patients. *The following were considered events during treatment: loss of complete hematologic response (CHR), loss of major cytogenetic response (MCyR; MCyR includes both partial cytogenetic response [PCyR] and CCyR), progression to AP/BC (from CP) or to BC (from AP), or death from any cause. †One patient had an event of progression to AP/BC.