A KGX transformation of the BioPortal ontology Read Clinical Terminology Version 2 (RCTV2), produced by KG‑Bioportal. Nodes are ontology classes; edges are the relations between them.
Graph at a glance
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This ontology declares no imports, so its base graph already is its full graph; nothing separate was built.
The graph contains RCTV2_nodes.tsv and RCTV2_edges.tsv. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.
Biolink categories 6 categories across 88,855 nodes
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 66,892 of 88,855 nodes (75.3%)
66,892 of these nodes inherit a category from 24 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 88,824 edges
An item carrying more than one category is counted under each, so these counts can add up to more than the total.