Kaplan-Meier analysis of survival and length of chronic phase comparing patients by deletion status and ABL-BCRexpression.

For ABL-BCR expression, calculations were performed for survival and length of chronic phase with the use of data for 160 and 159 patients, respectively; for deletion status, calculations were performed for 149 and 148 patients, respectively. The significance of any survival difference was assessed by log-rank analysis. Patients who underwent allogeneic stem cell transplantation and patients who died of causes unrelated to CML were censored at the time of the procedure or death, respectively. Separate Kaplan-Meier graphs are shown for survival according to deletion status (panel A) or ABL-BCRexpression (panel B) and for length of chronic phase according to deletion status (panel C) or ABL-BCR expression (panel D).