For example, recent reports show that AHR plays an intricate role in seemingly diverse biological processes and diseases, namely autoimmune diseases [2,3,4], cancers and cell proliferation [5,6,7,8,9], cancer stem cell differentiation [10], respiratory disorders [11,12], atopic dermatitis [13,14,15], bone disorders [16], antiviral response [17], and adipocyte differentiation [18]. This evidence concerns the gene AHR and cancer.