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Updated: May 25, 2026

Human Pluripotent Stem Cell Based Developmental Toxicity Assays for Chemical Safety Screening and Systems Biology Data Generation
Published on: June 17, 2015
A roadmap for the development of alternative (non-animal) methods for systemic toxicity testing
David A Basketter1, Harvey Clewell, Ian Kimber
1DABMEB Consultancy, Sharnbrook, UK.
Abstract:
Systemic toxicity testing forms the cornerstone for the safety evaluation of substances. Pressures to move from traditional animal models to novel technologies arise from various concerns, including: the need to evaluate large numbers of previously untested chemicals and new products (such as nanoparticles or cell therapies), the limited predictivity of traditional tests for human health effects, duration and costs of current approaches, and animal welfare considerations. The latter holds especially true in the context of the scheduled 2013 marketing ban on cosmetic ingredients tested for systemic toxicity. Based on a major analysis of the status of alternative methods (Adler et al., 2011) and its independent review (Hartung et al., 2011), the present report proposes a roadmap for how to overcome the acknowledged scientific gaps for the full replacement of systemic toxicity testing using animals. Five whitepapers were commissioned addressing toxicokinetics, skin sensitization, repeated-dose toxicity, carcinogenicity, and reproductive toxicity testing. An expert workshop of 35 participants from Europe and the US discussed and refined these whitepapers, which were subsequently compiled to form the present report. By prioritizing the many options to move the field forward, the expert group hopes to advance regulatory science.
Insights
This report outlines a roadmap to replace animal testing for systemic toxicity evaluations. It addresses scientific gaps and prioritizes alternative methods for advancing regulatory science.
Area of Science:
- Toxicology
- Regulatory Science
- In Vitro Testing
Background:
- Traditional animal models for systemic toxicity testing face limitations in predictivity, cost, and ethical concerns.
- A 2013 marketing ban on cosmetic ingredients tested on animals heightened the need for alternative methods.
- Evaluating a growing number of novel substances like nanoparticles and cell therapies requires new testing approaches.
Purpose of the Study:
- To propose a roadmap for replacing animal testing in systemic toxicity evaluations.
- To identify and prioritize scientific gaps hindering the adoption of alternative methods.
- To advance regulatory science through the development and validation of novel testing strategies.
Main Methods:
- Commissioned five whitepapers on key toxicological endpoints: toxicokinetics, skin sensitization, repeated-dose toxicity, carcinogenicity, and reproductive toxicity.
- Convened an expert workshop with 35 participants from Europe and the US to discuss and refine the whitepapers.
- Compiled refined whitepapers into a comprehensive report proposing a roadmap for replacing animal testing.
Main Results:
- Identified scientific gaps that need to be addressed for the full replacement of animal testing in systemic toxicity.
- Prioritized various alternative methods and strategies to overcome these gaps.
- Developed a roadmap to guide the advancement of regulatory science in toxicity testing.
Conclusions:
- A clear roadmap exists to transition from animal-based systemic toxicity testing to alternative methods.
- Addressing scientific gaps through prioritized strategies will facilitate the adoption of novel technologies.
- The proposed roadmap aims to enhance the safety evaluation of substances while considering ethical and scientific advancements.
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