CRLF2 and acute lymphoblastic leukemia: While our version of FusionInspector was not compatible with exploration of immunoglobulin heavy chain gene (IGH) fusions given the large IGH locus size (1.3 Mb vs. our 100 kb maximum intron length; STAR Methods), 12 (1.8%) TARGET ALL samples had evidence of IGH::CRLF2 fusions, a common oncogenic IGH fusion.58