Antonio De la Vieja, PhD, is the head of the Endocrine Tumors Unit at the Spanish National Institute of Health “Carlos III” (ISCIII) in Madrid, Spain. His research focuses on identifying molecules that regulate tumorigenic processes in the thyroid and ovary. He also looks into the mechanisms by which diabetes can lead to cancer. He aims to identify the elusive players in tumorigenesis processes so that we can better understand the effective therapies that are currently used, such as radio-iodine (RAI), and design new strategies forthe treatment of cancer.