DUSP4 and breast carcinoma: To map chromatin interactions between specific regions of the 8p12 risk locus (defined by EcoRI restriction fragments; Figure 1) and the DUSP4 promoter in breast cells, chromatin conformation capture (3C) analyses were conducted in breast cancer (MCF-7 and T-47D) and normal mammary epithelial (Bre-80) cell lines.