The following genes with an identifier have been found but that do not have a mapping to Ensembl: 4
http://classic.wikipathways.org/instance/WP1182_r136955 TAF6 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP1182_r136955 LOC100856712 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP1182_r136955 LOC100688583 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP1182_r136955 POLR3K with datasource Entrez Gene
More details at https://www.wikipathways.org/WikiPathwaysCurator/GeneTests/genesWithoutEnsemblMapping