Quo vadis integrated testing strategies? Experiences and observations from the work floor

Integrated testing strategies (ITSs) have received much attention as promising tools for more resource-efficient hazard and risk assessment of chemicals and for reducing animal use in toxicological testing. The usage of ITSs crucially depends on their acceptance and application by various stakeholder groups, for example chemical industry, scientific organisations and regulatory authorities. However, little is known about stakeholders' views on the use and application of ITSs. In this study, we present results from semi-structured interviews with different stakeholder groups. Interviewees were asked to express their personal views and opinions about what an ITS is or should be, about ITS advantages and limitations, about ITS implementation and acceptance and about needs for further research. Using qualitative data analysis, we identified a set of core themes that stakeholders considered most relevant with respect to these six topics. Our results illustrate that stakeholder perspectives differed considerably for each of the topics addressed. We found particularly diverging views across stakeholder groups with respect to ITS limitations and acceptance. This underlines that improving stakeholder integration and intensifying the dialogue about useful and successful ITS applications should receive more attention for strengthening ITSs as effective decision-support tools.