This articles summarizes the history of Medical Research Council (MRC) acut
e lymphocytic leukemia (ALL) trials in adults. It includes details of the e
arly trials UKALL I-V in which children and adults were entered. UKALL IX,
XA, and XII are for those older than 15 years of age (UKALL XII has an uppe
r age limit of 55 years). The trials are all randomized controlled trials.
The treatment schedules and survival curves are shown and discussed. A tota
l of 2565 adults were entered between 1970 and 2000, and outcomes for all o
f these patients are described.