Figure 1From: TopFed: TCGA tailored federated query processing and linking to LODBiological query results. We used TopFed to search for the methylation status of the KRAS gene (chr12:25386768-25403863) across five cancer histologies (hosted by five SPARQL endpoints) and created a box plot comparing the methylation values. The corresponding SPARQL query to retrieve the required methylation values is given in Listing 1.Back to article page