How adult drugs from the group of MAP kinase inhibitors can also be used in children with cancer in a standardized manner worldwide has now been outlined in a statement in the renowned European Journal of Cancer. The authors of this review are stakeholders from all relevant fields, including Caroline Hutter, MD, PhD, scientist at St. Anna Children’s Cancer Research Institute, clinician at St. Anna Children’s Hospital and expert in the rare pediatric cancer Langerhans cell histiocytosis (LCH). Her goal is to test the most effective and tolerable MAP kinase inhibitor in a clinical trial, thus enabling rapid market approval and availability for children.