We analyzed HIF1A (HIF-1α expression in six common breast cancer cell lines to determine whether basal breast cell lines, which have been previously reported to have a higher hypoxia response [64], also express higher levels of HIF1A (HIF-1α) and EPAS1 (HIF-2α) mRNA as compared to luminal breast cancer cell lines. The gene discussed is HIF1A; the disease is breast carcinoma.