Chemical Review Assessments Put On Hold

US Environmental Protection Agency (EPA) is putting on hold four of its ongoing IRIS (Integrated Risk Information System) assessments pending a review of some of the underlying studies used in the assessments. EPA is holding these assessments due to a report from the National Toxicology Program (NTP) that outlines a recent review of a research study completed by the Ramazzini Institute, a lab in Italy that conducts animal testing to evaluate the potential cancer-causing effects of chemicals.

EPA found six assessments that significantly rely on data from Ramazzini cancer studies: ongoing chemical assessments for methanol, MTBE, ETBE and acrylonitrile, and previously completed assessments for vinyl chloride and 1,1- dichloroethylene. EPA plans to continue its review to determine if any other assessments are significantly impacted.

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