The Society of Toxicology is hosting a free webinar on September 10, 2026, at 12:00 ET, titled, “US EPA’s IRIS Transition and its Implications.” This webinar aims to provide a balanced, science-based discussion of the recent action by the US EPA regarding the Integrated Risk Information System (IRIS), including their rationale, implementation, and implications for chemical risk assessment. The session will include:

Opening Remarks: David Fotouhi, Deputy Administrator of the US EPA (he authored the US EPA memo from earlier this year regarding the "Future Development and Use of Risk Assessments")

Panelists:

• Kris Thayer, PhD, Director, Office of Environmental Health Hazard Assessment, CalEPA
• Kimberly White, PhD, Vice President, American Chemistry Council
• Bette Meek, PhD, Professor, University of Ottawa
• Samuel Cohen, PhD, Professor, University of Nebraska
• James Bus, PhD, Senior Managing Scientist, Exponent
• Mohammad Moiz Mumtaz, PhD, Adjunct Professor, Emory University

Moderators

• Kan Shao, PhD, Indiana University - Bloomington, 2026-2027 President of the SOT Risk Assessment Specialty Section
• Michael Dourson, PhD, TERA, 2026-2027 Past President and Councilor of the SOT Ethical, Legal, Forensic, and Societal Issues Specialty Section

Learn more and register here.