Editor-in-Chief of the Toxicological Sciences: the official journal of the Society of Toxicology. Broad expertise in drug and chemical toxicology, including guideline studies, genomic and metabolomic assessment, new approach methods, and validation of methods for regulatory applications. Manages program development of safety assessment packages for global regulatory filings of Corteva products. Previous experience as a senior science advisor at the US EPA, leading US and intergovernmental efforts on new approach method development and validation for chemical safety. Led development and managed program for the short-term transcriptomics evaluation of data-poor chemicals at the EPA and leads the transcriptomics team at Corteva.