Rob Pieters is Chief Medical Officer (CMO) at Princess Máxima Center for Pediatric Oncology and Professor of Pediatric Oncology at the University of Utrecht, both in Utrecht, The Netherlands. In 1987 he obtained his MSc in human movement science and his MD at the Free University of Amsterdam and in 1991 his PhD with a thesis on drug resistance in leukemia. After finishing his training in pediatrics in 1995, he received a clinical fellowship in pediatric oncology from the Dutch Cancer Society. He was Head of Pediatric Oncology/Hematology at the Erasmus MC-Sophia Children’s Hospital in Rotterdam, and was a full professor in Pediatric Oncology at Erasmus University Rotterdam from 2000-2017 and since 2017 a full professor in Pediatric Oncology at the University of Utrecht. Rob Pieters is initiator and one of the founders of the Princess Máxima Center for Pediatric Oncology. This national center has merged all expertise from all former childhood cancer centers in the Netherlands, thereby establishing the largest center in Europe for treatment and research of childhood cancer. Rob Pieters’ research is focused on the development of personalized therapies for childhood acute lymphoblastic leukemia (ALL). He chairs and/or is member of many boards of international childhood cancer study groups and advisory boards of international institutes and organizations in the field of cancer. In 2018 he received a Royal knighthood decoration as Officer in the Order of Oranje Nassau for his achievements for children with cancer. Rob Pieters published >600 book chapters and papers in peer-reviewed journals, has supervised >50 PhD students and is a frequent speaker at international congresses.