Event free survival curves showing outcomes of infants and older children with blasts that harbor 11q23 translocations.

Outcomes are shown for the last series (1800s/1922) of CCG ALL trials (historical controls) compared to the most recent series (1950/1960s). Outcomes are superior for children ≥ one year of age in both the historical control group (P = .01), and in the 1950/1960s series (P = .06).

Abbreviations: HC, historical controls