NFKB1 and colonic neoplasm: Constitutive NF-κB activation was observed in 67% of colorectal cancer cell lines [24], and we also confirmed that some colon cancer cells such as DLD-1, HT-29, and LS174T display much higher p65 activity compared to normal intestinal cells (HIEC6) based on reporter assays (Figure S3, Supplementary Materials).