Prototype KG‑aware adaptation of the BioPortal interface. Graph pages generated from live KG‑Registry metadata; tool links go to the live BioPortal.
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SNMI

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Systematized Nomenclature of Medicine, International Version

KGXBioPortal ontologyv2024AA
Visibility: Public

A KGX transformation of the BioPortal ontology Systematized Nomenclature of Medicine, International Version (SNMI), produced by KG‑Bioportal. Nodes are ontology classes; edges are the relations between them. The base graph is the ontology on its own, imports stripped; the full graph, where built, has the import closure merged in.

Base graph at a glance

109,166
Nodes
109,031
Edges
2024AA
Version
2026-09-14
Transformed

Products & downloads

Base
KGX base graph (imports stripped)
SNMI.tar.gz
109K nodes · 109K edges
Full
KGX full graph (imports merged in)
SNMI_full.tar.gz
109K nodes · 109K edges

The base graph contains SNMI_nodes.tsv and SNMI_edges.tsv. The full graph contains SNMI_full_nodes.tsv and SNMI_full_edges.tsv: this ontology plus the 1 it imports (and their imports in turn), merged by ROBOT. Use it when the imported terms matter; the base graph merges more cleanly with other graphs. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.

Imports 1

What this ontology pulls in through owl:imports. An import that is itself a BioPortal ontology links to its page here; a module of one links to the ontology it belongs to; anything else links out, or is named by its namespace when it is not a web address. The base graph leaves all of these out; the full graph, where built, has them merged in.

Biolink categories 8 categories across 109,166 nodes

Disease26,055
Procedure22,156
NamedThing19,974
OrganismTaxon17,557
ChemicalEntity12,527
AnatomicalEntity10,278
Agent363
Gene256

An item carrying more than one category is counted under each, so these counts can add up to more than the total.

How they were assigned 89,192 of 109,166 nodes (81.7%)

89,192inherits from a root class placed by review

89,192 of these nodes inherit a category from 8 root classes reviewed by Claude Fable 5.1 (claude-fable-5-1), in a Claude Code session with the maintainer on 2026-09-10. Not yet confirmed by a maintainer. These root classes were placed by reading them and their subclasses in the published graph, with the assistance of an AI agent. The reading, the evidence, and the refusals are recorded in reviewed_roots.yaml. See how categories are assigned.

Biolink categories 1 category across 109,031 edges

Association109,031

An item carrying more than one category is counted under each, so these counts can add up to more than the total.