ChIP-seq analysis of HIF-1β binding was performed in duplicate in PC3 prostate cancer cells (970 sites), T47D oestrogen receptor positive (ER+) breast cancer cells (2081 sites), A549 lung cancer cells (1044 sites), and HCT-116 colorectal carcinoma cells (1767 sites). The gene discussed is ARNT; the disease is lung carcinoma.