Target Selection in Drug Discovery

Abstract In this review, four criteria will be proposed to evaluate new targets: linkage to the disease, potential therapeutic index, chemical tractability, and economics. But even the best targets have issues. The ability to identify these issues, develop a plan to address these issues, and apply judgment as to the likely outcome of these issues will have a significant impact on the success of any drug discovery and development effort. Viewed from this perspective, target selection is a process not an event. In particular, as internal and external data become available, targets should be reevaluated with respect to these criteria to determine the appropriateness of continued work.