CSF1R and acute lymphoblastic leukemia: Although RNAseq data were obtained from diverse library preparation (total versus messenger RNA, unstranded versus stranded) and sequencing (75 bp versus 100 bp paired end) methods, reproducible clustering of MEF2D-rearranged cases was observed in principal component analysis and hierarchical clustering (Fig. 2a and Supplementary Figs 8–10), with the exception of one sample harbouring an MEF2D-CSF1R fusion, which clustered with Ph-like ALL cases.