BTK and acute lymphoblastic leukemia: The gene expression analysis of kinome-specific genes according to the classification of INPP5D with high, intermediate or low expression in transcriptome data from B-ALL patient samples with Ph-positive (Fig. S3C) subtype showed that the genes ABL1, FES, TEC and BTK, together with INPP5D, exhibited a gradual change in gene expression from the low to high expression classification.