In this context, we analyzed the genes for which the expression correlated significantly, either positively or negatively, with AhR mRNA levels across tumor cell lines (lung, brain-CNS, breast, skin melanoma) of the GDSC database (Genomics of Drug Sensitivity in Cancer) using the CellMiner Cross Database web application (https://discover.nci.nih.gov/cellminercdb) [38] (Figure 2A). The gene discussed is AHR; the disease is cancer.