The mutual molecular pathways in the development of breast and lung cancer that are linked to these genes are aryl hydrocarbon receptor (AHR) pathway, apoptosis, chemical carcinogenesis, ferroptosis, fluid shear stress and atherosclerosis, lipid and atherosclerosis, miRNA in DNA damage response, Nrf2 pathway, nuclear receptors meta-pathway, and oxidative stress response (Suppl Figs. 1 & 2; Suppl Tables 4 & 5). The gene discussed is AHR; the disease is lung carcinoma.