ZBTB5 and B-cell chronic lymphocytic leukemia: We could not prove a causal relation between increased hsa-miR-132-3p and hsa-miR-212 expression and reduced TGFB1, EP400 and ZBTB5 expression experimentally in CLL cells, as in our hands transfected miRNA mimics of these miRNAs did not alter expression of these genes, nor did miRNA mimics with validated targets used as positive controls affect mRNA level of their target (e.g. hsa-miR-1 on PTK9 expression).