Objective: To compare the clinical and biologic characteristics, respo
nse to therapy and outcome of adult patients with ALL above and below
the age of 55. Design: Retrospective review of clinical and laboratory
data. Setting: University affiliated Cancer Center and Veteran's Hosp
ital. Patients: Thirty-three newly diagnosed, consecutive, adults with
ALL seen over a nine-year period. Results: while no differences were
demonstrated in the distribution of recognized prognostic indicators (
such as cytogenetic abnormalities or immunophenotype), individuals ove
r the age of 55 had significantly lower remission rates and shorter su
rvivals. Conclusions: The outcome of elderly patients with ALL is very
poor. This is primarily related to an increase in the number of early
deaths during induction, as well as a higher prevalence of disease re
fractory to standard chemotherapy programmes. There is a need for new
treatment protocols designed for the elderly ALL patient, as well as a
better understanding of the unique biological characteristics of the
disease in this age group.