Then we investigated the differential expression of PPP2R2B in BC cell lines (J82, 5637, UM-UC-3, T24) and an immortalized urothelial cell line (SV-HUC-1) and found that it was expressed at lower levels in BC cell lines than in SV-HUC-1 cells (Fig. 1C). This evidence concerns the gene PPP2R2B and breast cancer.