Nine of these miRNAs (miR-181b, miR-1246, miR-1248, miR-3168, miR-486-5p, miR-29c, miR-3607-3p, miR-4301 and miR-3182) were significantly higher expressed in two cell lines while one miRNA (miR-181a*) was significantly up-regulated in all three ALK+ ALCL cell lines after C/EBPβ down-regulation. This evidence concerns the gene ALK and anaplastic large cell lymphoma.