When Do NAMs Become True Success Stories?

New Approach Methodologies, or NAMs, are increasingly seen as critical to phasing out animal testing. These non-animal methods have the potential to support more ethical and human-relevant science.

However, innovation alone is not enough to create meaningful change. A method does not become successful simply because it is new, scientifically promising or aligned with the 3Rs. True NAMs success stories begin when a method earns the trust of the people expected to use it.

For scientists, regulators and industry, trust means being able to understand a method, rely on its results and use it confidently to support decisions.

Why Trust Is Essential for NAMs Success Stories

A NAM may appear impressive in isolation, but its real value depends on whether it can move beyond a pilot project, publication or proof of concept.

This transition requires more than technical innovation. Users need confidence that the method can produce reliable information across different teams, laboratories, datasets and contexts. They also need to understand how the method works, what its strengths are and where its limitations lie.

Trust therefore supports adoption. When a method is transparent, accessible and reliable, it becomes easier for a wider community to evaluate and use it. This is particularly important in predictive toxicology, regulatory science and safety assessment, where methods must contribute to meaningful decisions rather than simply generate additional data.

The success of animal testing alternatives ultimately depends on their ability to become accepted and confidently used in practice.

The Key Qualities of Impactful NAMs

For NAMs to move from scientific promise to real-world use, they need to combine several essential qualities.

• Reproducible: A NAM should deliver reproducible results across laboratories, teams, datasets and contexts. Consistency is fundamental to building confidence in the method.

• Human-relevant: It should reflect biology that matters for human health and safety. Human relevance keeps the method connected to the decisions it is designed to support.

• Accurate: Its predictions should be reliable enough to inform meaningful decisions. Accuracy is essential when results are expected to support action.

• Transparent: Users should be able to understand the assumptions, strengths and limitations behind the method. Transparency makes informed evaluation possible and strengthens trust.

• Accessible: Adoption should not be limited to a small group of highly specialised experts. A method that can be understood and used more broadly has greater potential for real-world impact.

• Time- and cost-effective: A NAM should be practical enough to scale beyond an initial study, publication or proof of concept.

• Regulatory-ready: Regulatory-ready NAMs can progress from scientific promise towards accepted practice. This quality is essential for methods intended to support regulatory use.

• Decision-ready: A successful NAM should not only produce data. It should provide information that can support a clear and meaningful course of action.

Together, these qualities help turn promising non-animal methods into trusted, scalable and decision-ready methods.

From Promising Alternatives to Real-World Transformation

The purpose of NAMs is not simply to replace an animal test with another method.

The ambition is broader: to support decisions that are faster, better, more ethical and more human-relevant. This changes how success should be evaluated. A NAM should not be judged only by how innovative it appears, but also by how effectively it supports confident action.

Decision-readiness is therefore central to meaningful adoption. Data alone do not create impact. The information generated must be sufficiently reliable, understandable and relevant to help scientists, regulators and industry decide what to do next.

This is how New Approach Methodologies can move from promising animal testing alternatives to practical tools for human-relevant science and safety assessment.

Building the NAMs Success Stories That Matter

The most important NAMs success stories will not necessarily be the methods that appear most impressive in isolation. They will be the methods that scientists, regulators and industry can trust, adopt and use confidently at scale.

By combining reproducibility, human relevance, accuracy, transparency, accessibility, efficiency and readiness for both regulatory use and decision-making, NAMs can progress from scientific potential to real-world transformation.