The IGRG is founded in 2012 through the collaborative effort of 15 radiotherapy institutions in the US and Europe. We are determined to provide elderly cancer patients with the best radiotherapy techniques to improve their chance for cure and having a better quality of life. As treatment of elderly cancer patients is often complex, we recognize the necessity to have a scientific advisory board to assess the special need of elderly patients and to make recommendations on the design of future clinical trials to improve the patient quality of life. We also seek the input of elderly cancer patient survivors and their family as they went through the ordeal of cancer treatment together. Together, we will make the difference to provide elderly cancer patients with the best possible care and to design future prospective studies that may improve their quality of life.