The following genes with an identifier have been found but that do not have a mapping to Ensembl: 4
http://classic.wikipathways.org/instance/WP97_r116933 Fz2 with datasource UniProtKB
http://classic.wikipathways.org/instance/WP97_r116933 Cos2 with datasource UniProtKB
http://classic.wikipathways.org/instance/WP97_r116933 CK1,2 with datasource UniProtKB
http://classic.wikipathways.org/instance/WP97_r116933 Dpp with datasource UniProtKB
More details at https://www.wikipathways.org/WikiPathwaysCurator/GeneTests/genesWithoutEnsemblMapping