In vitro genotoxicity testing-Can the performance be enhanced?

- Recent activities have improved the current in vitro genotoxicity testing paradigm.
- Approaches have been developed to enhance in vitro testing accuracy.
- Novel tests are being established.
- New tools are now in place to support advancement in the field.

The assessment of genotoxicity represents an essential component of the safety assessment of all types of substances. Several in vitro tests are available at different stages of development and acceptance, yet they are not considered at present sufficient to fully replace animal tests needed to evaluate the safety of substances. For an overall improvement of the traditional genotoxicity testing paradigm, several recent activities have taken place. These include the improvement of existing tests, the development of novel tests, as well as, the establishment and exploration of approaches to optimise in vitro testing accuracy. Furthermore, useful tools, such as databases or reference chemical lists have been developed to support advances in this field.