Jimmy Carter's connection to immunotherapy

According to the Cancer research institute, President Carter's doctors took a bold initiative for treating his cancer. An immunotherapy treatment called pembrolizumab (Keytruda?) had only earned U.S. Food and Drug Administration (FDA) approval in 2014, the year before President Carter's diagnosis. Dr. Adam Friedman, Professor & Chair of dermatology at the George Washington School of Medicine and Health Sciences joins LiveNOW from FOX to discuss.