The following genes with an identifier have been found but that do not have a mapping to Ensembl: 6
http://classic.wikipathways.org/instance/WP146_r116996 Oaz1 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP146_r116996 Adsl with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP146_r116996 Rrm1-ps1 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP146_r116996 Rrm2b with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP146_r116996 Prps1 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP146_r116996 Rrm2 with datasource Entrez Gene
More details at https://www.wikipathways.org/WikiPathwaysCurator/GeneTests/genesWithoutEnsemblMapping