Which statement best describes target validation in drug discovery?

Prepare for the Drug Discovery and Healthcare Systems Test. Access flashcards and multiple-choice questions with hints and explanations. Ace your exam with our comprehensive resources!

Target validation means proving that hitting and modulating a chosen biological target will produce the desired therapeutic effect in disease models, and that this modulation can be achieved with acceptable safety in humans. This goes beyond simply finding a molecule linked to disease; it demonstrates that the target causally contributes to the disease and that altering its activity yields real improvements. Robust validation uses diverse evidence—genetic data showing that changing the target affects disease outcomes, pharmacologic studies, and multiple model systems—to show both efficacy and safety signals and to de-risk progression to humans.

The best statement reflects this by combining the identification of a disease-associated biological molecule with evidence that modulating the target yields the therapeutic effect while maintaining acceptable safety, thereby establishing a causal link and lowering the risk of failure later in development. In contrast, simply identifying a target does not prove causality or therapeutic potential, and relying on computer-based screening alone is an early, exploratory step, not validation.