Nuclear transcription factor-κB (NF-κB) is one of the most important nuclear transcription factors mediating intracellular signal transmission and is continuously activated in leukemias and solid tumors, including breast cancer, rectal cancer, pancreatic cancer, prostate cancer, and melanoma (Karin and Greten, 2005; Karin, 2006). Here, NFKB1 is linked to breast carcinoma.