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Nat Rev Endocrinol. 2019 Jun;15(6):366-374. doi: 10.1038/s41574-019-0173-y.

Endocrine disruptors and the future of toxicology testing - lessons from CLARITY-BPA.

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Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts-Amherst, Amherst, MA, USA.
Center for Reproductive Biology, School of Molecular Biosciences, Washington State University, Pullman, WA, USA.
Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA.


Five years ago, an ambitious collaboration, the Consortium Linking Academic and Regulatory Insights on Toxicity of BPA (CLARITY-BPA; henceforth CLARITY), was launched by three US agencies. The goal was to provide a definitive evaluation of bisphenol A (BPA) and explain disparities between traditional regulatory studies and findings from independent investigators. BPA or vehicle-treated rats from an FDA facility were used in a guideline study and animals and/or tissues were provided to academic researchers for analysis. An interim summary released in February 2018 by the FDA concluded that currently authorized uses of BPA continue to be safe. We disagree. In this Perspectives, we summarize the goals, design and problems of CLARITY. We conclude that, despite its flaws, CLARITY provides important insight and, taken together, the data provide compelling evidence that low-dose BPA exposure induces marked adverse effects. Indeed, the greatest number of effects were observed at doses 20,000 times lower than the current 'safe' dose of BPA for humans.

[Indexed for MEDLINE]

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