The public access version, CKB CORE™, encompasses 50 cancer-related genes, and every quarter, a select group of genes are exchanged, focusing on a specific theme. Users can search CKB CORE™ via gene and gene variants. The web-based, subscription version, CKB BOOST™, includes more than 2000 cancer-related genes and is designed to interrogate the knowledgebase for specific data attributes while enabling a robust browse-like feature when the desired content is unknown.

Downloadable data from CKB is available using the FLEX version. CKB FLEX delivers CKB content as a flat file or JSON, enabling CKB data integration.