New approaches in
chemical risk assessment.

Specializing in development and implementation of bespoke testing strategies using modern toxicological methods and tailored to each client's specific needs.

Areas of Expertise

COMPUTATIONAL TOXICOLOGY

In silico approaches for interpreting mode of action, dose-response and chemical prioritization.

IN VITRO
TOXICOLOGY

High throughput and organotypic in vitro tests for mode of action, dose-response, and human relevance.

IN VIVO
TOXICOLOGY

Design and interpretation of studies that promote the 3Rs: refinement, reduction and replacement.

About Rebecca Clewell

Dr. Clewell is an internationally recognized expert on the development of in vitro and computational tools to support chemical safety decisions. Bringing together 20 years of experience in quantitative biology and chemical dose-response, Dr. Clewell conducts research and designs testing strategies that maximize the use of New Approach Methods in determining chemical mode of action and dose-response to support quantitative risk-based decisions.
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Select Research Publications

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Aug 2020
Application of a Combined Aggregate Exposure Pathway and Adverse Outcome Pathway (AEP-AOP) Approach to Inform a Cumulative Risk Assessment: A Case Study with Phthalates
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Apr 2020
Identifying Qualitative Differences in PPARα Signaling Networks in Human and Rat Hepatocytes and Their Significance for Next Generation Chemical Risk Assessment Methods
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Jan 2020
The Role of Fit-For-Purpose Assays Within Tiered Testing Approaches
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Sep 2019
Workshop on the Validation and Regulatory Acceptance of Innovative 3R Approaches in Regulatory Toxicology
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Aug 2019
Addressing Systematic Inconsistencies Between in Vitro and in Vivo Transcriptomic Mode of Action Signatures
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Apr 2019
An Evaluation of the USEPA Proposed Approaches for Applying a Biologically Based Dose-Response Model in a Risk Assessment for Perchlorate in Drinking Water
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Select Research Presentations

Jan 2020
Scientific Validity of Replacements for Animal-Derived Antibodies
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Nov 2019
Using publicly available tools for rapid MoE estimation
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Nov 2019
Using available tools for tiered assessments and rapid MoE
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