The webinar on Using Omics Bioactivity Data to Increase Confidence in Chemical Groups, organised by PrecisionTox, took place online on 10 December 2025. The session examined how omics bioactivity data can enhance confidence in chemical grouping and presented perspectives from both regulatory authorities and industry, highlighting the role of grouping in supporting read-across and reducing the need for animal testing.

The webinar showcased several case studies illustrating the use of metabolomics and transcriptomics data in chemical grouping. Attendees also received an update on best practices for describing and reporting omics-based grouping studies in line with OECD guidance. A further case study explored an application of metabolomics beyond its traditional use, demonstrating how chemical biotransformation products can support grouping based on metabolic similarity.

Target audience
This webinar was particularly relevant for professionals in industry, regulatory bodies, and academia with an interest in chemical grouping, read-across, and the application of New Approach Methodologies (NAMs).