To see whether CD147 mRNA expression negatively correlated with miR-146a levels, CD147 mRNA was analyzed in five ALK+ ALCL cell lines (SUDHL-1, KiJK, Karpas 299, SUP-M2 and SR-786) and in three ALK− ALCL cell lines (FE-PD, Mac-1 and Mac2a) using RT-qPCR. The gene discussed is ALK; the disease is anaplastic large cell lymphoma.