TAL1 and neoplasm: Interestingly, tumour 521 exhibits a significant increase in the levels of TAL1 expression (FPKM, Fragments Per Kilobase of exon per Million reads vary from 0.47 in controls to 6.06 in the tumour,; log2FoldChange = 3.6) and in the levels of TP53 expression (FPKM values varying from 45.5 in controls to 79.8 in the tumour sample).