Hans Wildiers, M.D., Ph.D., is a dedicated breast cancer researcher and medical oncologist. He has been a staff member at the Department of Medical Oncology at the University Hospital Leuven, Belgium, since 2004. In addition, he coordinates the Leuven Multidisciplinary Breast Centre since 2015. Professor Wildiers has coordinated several academic studies in the field of breast cancer and geriatric oncology and authored more than 300 peer reviewed papers. He has also been active on the board the International Society of Geriatric Oncology (SIOG), for many years, including serving as its president from November 2018 to October 2020. In addition, from 2009 to 2015, Professor Wildiers chaired the European Organisation for the Research and Treatment of Cancer’s (EORTC) task force on cancer in the elderly.