To find out whether such a phenomenon (the absence of induction of galectin-9 expression by TGF-β) applies also to cancer cells we used K562 chronic myeloid leukaemia cells which express only traces of galectin-9 protein [1] compared to for example THP-1 or other AML cells. This evidence concerns the gene TGFB1 and chronic myelogenous leukemia, BCR-ABL1 positive.