The National Toxicology Program (NTP) will host an April 23, 2013, Webinar to discuss case studies on the alleged health effects of bisphenol A (BPA), perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS). These studies are intended to illustrate how the NTP Office of Health Assessment and Translation will implement its draft systematic literature-based review methodology in carrying out potential human health hazard assessments. Comments on the draft approach and case studies are requested by June 11, 2013.

The BPA case study provides a draft protocol to evaluate the evidence for an association between obesity and exposure to the chemical, used in food contact materials, including plastic and metal cans; cash register receipts; sports equipment; and CDs and DVDs. It does not reach any final risk conclusions, but shows how relevant literature will be identified and rated in developing hazard identification conclusions.