title: Considerations in the design of clinical trials for pediatric acute lymphoblastic leukemia.
abstract: Acute lymphoblastic leukemia (ALL) is the most common pediatric malignancy. Although outcomes for children with ALL have improved dramatically over the last 50 years, ALL remains the leading cause of childhood cancer death. In addition, high-risk patient subsets can be identified with significantly inferior survival. In the current era of therapies directed at specific molecular targets, the use of conventional randomized Phase III trials to show benefit from a new treatment regimen may not be feasible when these biologically defined subsets are small. This review presents the traditional approaches to designing trials for children with ALL, as well as innovative approaches attempting to study the benefit of new treatments as reliably as possible for patient subsets with distinctive biological characteristics.
authors.affiliation: Department of Biostatistics, Colleges of Medicine, Public Health & Health Professions, University of Florida, 6011 NW 1st Place, Gainesville, FL 32607, USA.
authors.forename: Meenakshi
authors.initials: M
authors.lastname: Devidas
authors.forename: James R
authors.initials: JR
authors.lastname: Anderson
keywords: acute lymphoblastic leukemia; clinical trials; historical controls