Understanding Pathways to a Paradigm Shift in Toxicity Testing and Decision-Making: Proceedings of a Workshop—in Brief.

Advances in new tools and tests of chemical toxicity—from high throughput, cell-based, in vitro studies to tissue chips to environment-wide association studies—have led to a new understanding about the effects of chemical exposures in humans. These new approaches are faster, less expensive, and increasingly more relevant to human exposures than legacy animal toxicity testing approaches. Additionally, the passage of the Frank R. Lautenberg Chemical Safety for the 21st Century Act (Lautenberg Act), which amends the Toxic Substances Control Act (TSCA), has encouraged opportunities for industry and government agencies to use data from emerging toxicity testing approaches, particularly in risk assessment and analysis contexts. However, many questions remain about whether and how to make the paradigm shift away from traditional approaches and toward using new data streams as the basis for the wide array of research, policy, and regulatory decisions facing the environmental health field.

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