All clinical trials have guidelines that clearly state who can and cannot participate, but according to the National Institutes of Health these guidelines are typically based on age, gender, previous treatment history, the type and stage of a disease, and other medically relevant factors. However, researchers at Fox Chase Cancer Center have gathered evidence indicating that some trials explicitly exclude individuals based on their sexual orientation. Their findings are published in a research letter appearing in the March 18 issue of the New England Journal of Medicine. read more