Genes could also be expressed as full IRIs

Human readable gene symbols (COL7A1, TTN, CHD7, etc) are convenient for daily use, but are sometimes renamed, re-assigned, or removed by the HUGO HGNC. Perhaps it's better to use stable HGNC gene identifiers and IRIs (as well as the human labels). For instance, see https://raw.githubusercontent.com/molgenis/molgenis-emx2/feat/ejp-vp-api/data/fairdatahub/ontologies/Genes.csv.