Deep sequencing was performed on small RNA libraries generated from triplicates of three ALK+ ALCL cell lines (SUDHL-1, KiJK, Karpas 299) after C/EBPβ silencing or from mock-treated cells, one ALK- ALCL cell line (Mac-1) and from CD3+ PBMCs from healthy donors. The gene discussed is CEBPB; the disease is anaplastic large cell lymphoma.