Day 15 estimates of EFS in patients with ALL.

(A) Kaplan-Meier estimate of EFS according to the percentage of lymphoblasts on the day 15 BM in studies XI and XII combined. (B) Kaplan-Meier estimates of EFS by day 15 BM blast percentage in study XI. (C) Kaplan-Meier estimates of EFS by day 15 BM blast percentage in study XII.