In order to identify the downstream targets of C/EBPβ in ALK+ ALCL that might be responsible for survival and proliferation, GEP was performed after C/EBPβ silencing in the two ALK+ ALCL cell lines SUDHL-1 and KiJK, and compared with mock-treated cells. The gene discussed is CEBPB; the disease is anaplastic large cell lymphoma.