Confirming the idea of a positive correlation, RNA-sequencing data from the Cancer Cell line Encyclopedia (CCLE) [29] showed that B-ALL and AML cell lines showed a strong positive correlation between the expression of CASC15 and SOX4, while DLBCL and non-hematopoietic tumor cell lines did not (Additional file 5: Figure S3c). Here, SOX4 is linked to acute lymphoblastic leukemia.