EPA Weighs Whether To Expand IRIS 'Evidence' Review To Cancer Issues

EPA staff are weighing whether their planned workshop to discuss "weight-of-evidence" frameworks for its Integrated Risk Information System (IRIS) assessments will cover both cancer and non-cancer assessments -- though a top official says the focus is on adopting a new approach for non-cancer assessment, which currently lacks a classification system. Industry sources, however, have expressed concerns with the suggestion that EPA's cancer assessments do not need a review of their weight of evidence (WoE) procedures. They argue that both types...