Table 2.

Identifiers included in data model for cross-source entity identification

Entity type	Primary ID source	Further ID sources
Gene	Entrez gene	Ensembl, RefSeq
Transcripts	RefSeq	Ensembl, UniProt
Disease names	Disease ontology	UMLS, human phenotype ontology (HPO)
Drugs	DrugBank	PharmGKB, FDA
Pathways	KEGG	Gene ontology, PathwayCommons, Reactome