CATA database mainly includes five user-friendly characteristics: (I) CATA provides four strategies, including ‘Searchaccessible regions by cancer type’ (input cancer type), ‘Search accessible regions by gene’ (input gene of interest, cancer type and strategies), ‘Search accessible regions by TF’ (input TF name of interest and cancer type) and ‘Search chromatin accessibility region by genomic scope’ (input cancer type and genomic position). This evidence concerns the gene TF and cancer.