The following DataNodes have no identifier: 11
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier
The following genes with an identifier have been found but that do not have a mapping to Ensembl: 3
http://classic.wikipathways.org/instance/WP1141_r117456 CDC2 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP1141_r117456 GAS1 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP1141_r117456 HHIP with datasource Entrez Gene
More details at https://www.wikipathways.org/WikiPathwaysCurator/GeneTests/genesWithoutEnsemblMapping