BACKGROUND: Health care providers are increasingly using GS to diagnose, prognose and treat diseases. GS offers increased sensitivity over classic genetic tests, decreasing time-consuming and costly diagnostic cascades. However, GS may also incidentally reveal inherited risks for many other cancers and diseases. Guidelines recommend doctors inform patients of their incidental GS results. Yet there are limited tools to communicate the scope and implications of the thousands incidental results available to help guide patients' decisions about which results they wish to learn.