Fig. 1

Four-tier evidence-based categorization system for acquired copy-number abnormalities (CNAs) and copy-neutral loss of heterozygosity (CN-LOH) detected by chromosomal microarray analysis (CMA).CEBM Oxford Centre for Evidence-Based Medicine, COG Children’s Oncology Group, COSMIC Catalogue of Somatic Mutations in Cancer, IPSS International Prognostic Scoring System for myelodysplastic syndromes, NCCN National Comprehensive Cancer Network, WHO World Health Organization.