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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CTONT

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Epoch Clinical Trial Ontology

KGXBioPortal ontologyv<table border="1"> <tr> <td> <b><i>Version</i></b> </td> <td> 0.97 </td> </tr> <tr> <td> <b><i>Date</i></b> </td> <td> 3/2/2007<br> </td> </tr> </table> <br>
Visibility: Public

A KGX transformation of the BioPortal ontology Epoch Clinical Trial Ontology (CTONT), 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

108
Nodes
139
Edges
<table border="1"> <tr> <td> <b><i>Version</i></b> </td> <td> 0.97 </td> </tr> <tr> <td> <b><i>Date</i></b> </td> <td> 3/2/2007<br> </td> </tr> </table> <br>
Version
2026-09-14
Transformed

Products & downloads

Base
KGX base graph (imports stripped)
CTONT.tar.gz
108 nodes · 139 edges
Full graph not built (unresolvable_imports)

At least one of this ontology's imports could not be fetched (a dead, moved, or unreachable URL), so ROBOT could not merge the import closure. The base graph is unaffected.

The base graph contains CTONT_nodes.tsv and CTONT_edges.tsv. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.

Imports 3

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 1 category across 108 nodes

NamedThing108

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

Biolink categories 1 category across 139 edges

Association139

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