Patients
A total of 110 patients were included in this retrospective study. The age range was from 9 months to 14 years. All patients that were diagnosed with ALL between 2015-2017 at the Kantha Bopha II hospital in Phnom Penh were included. They had not received previous treatment, except for one patient who was transferred from Vietnam after the initial diagnosis. Parental consent was obtained in all cases before the start of treatment. Data was obtained with case report forms (CRF) by trained staff from the leukemia treatment team and provided for analysis in an anonymized format. A waiver was obtained to perform the study from the ethical committee of the Kanton of Zurich with this anonymized dataset.