Ontology

CLO

Cell Line Ontology

The Cell Line Ontology is a community-based ontology of cell lines. The CLO is developed to unify publicly available cell line entry data from multiple sources to a standardized logically defined format based on consensus design patterns.

cellcell biologycell linecelllinelife sciencemorphologyoboontology
A86

FAIR 47/48

Version 2026-06-19

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagegithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortalBrowse in OBO FoundryOBO Foundry registry

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)clo2026-06-1940,8512393025 Oct 2026
OBO Dashboardclo2026-06-1940,053——18 Jul 2026

Ontology IRI http://purl.obolibrary.org/obo/clo.owl
Version IRI http://purl.obolibrary.org/obo/clo/releases/2026-06-19/clo.owl

Languages en

Imports from (20)
BFO CHEBI CL COB DDANAT DOID ENVO GO IAO MONDO MOP NCBITaxon OBI OMO PATO PCO PO PR RO UBERON

Reused by (20)
DIDEO GENEPIO OBI OHPI ADO BAO BCGO COVOC EFO ENM EPIO GENO HCAO MCO NCRO OBIB OMIT ONE PRIDE TXPO

Logical consistency
consistent · 0 unsatisfiable
OWL 2 DL
no
ROBOT report
0 errors · 36,613 warnings · 180 info
OBO principles
FP01FP02FP03FP04FP05FP06FP07FP08FP09FP11FP12FP16FP20
Axioms
274,153 · 2.52% entities reused

Also registered as
aberowl: CLO bioportal: CLO fairsharing: FAIRsharing.4dvtcz obofoundry: clo ols: clo ontobee: CLO wikidata.entity: Q21039006

Automated evaluation

F Findable FAIR12/12
  • Persistent identifier (F1)purl.obolibrary.org+4
  • Indexed in services (F4)5: OLS, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
  • Citable reference (F2)doi:10.1186/2041-1480-5-37+3
A Accessible FAIR12/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)download HTTP 200+6
  • Metadata persists in a registry (A2)OBO Foundry, Bioregistry+3
I Interoperable FAIR12/12
  • Formal machine-readable format (I1)OWL+5
  • Semantic-web IRIs (I2)OWL+3
  • References other vocabularies (I3)imports 20: bfo, chebi, cl, cob, ddanat, doid, envo, go…+4
R Reusable FAIR11/12
  • Clear license (R1.1)CC BY 3.0+5
  • Release provenance (R1.2)2026-06-19 (version IRI in the artefact)+4
  • Community standards (R1.3)OBO principles: 9/13 checks pass+2
Q Ontology consistency & quality17/20
  • Logical consistencyconsistent, 0 unsatisfiable classes (OBO Dashboard)+10
  • OWL 2 DL profileoutside OWL 2 DL0
  • Upper-ontology alignmentimports BFO, COB+3
  • Standard relations (RO)imports RO+1
  • ROBOT report: no errors0 errors+2
  • ROBOT report: warning density36613 warnings / 40053 classes = 0.910
  • Pitfall scan: no critical pitfallsno pitfall scan yet; ROBOT report has 0 errors+1
M Maintenance11/16
  • Recency2026-06-20 → 4.2 months (≤ 6 months)+8
  • Release cadence (12 months)2 releases (GitHub releases)+3
U Community adoption11/16
  • Documented adopting projects4 projects+4
  • Reused by other ontologies20: dideo, genepio, obi, ohpi, ado, bao…+3
  • Community signalmax(stars 19 → 1, citations 347 → 4)+4
P Penalties (inactivity & inconsistency)0
  • Time since last activity0.4 years → 4 × max(0, 0.4 − 1)0
  • Inactive statusnot archived, legacy or inactive0
  • Consistencyconsistent, no unsatisfiable classes0

FAIR subtotal 47/48 · earned 86/100 = 86/100 → grade A

Community adoption 4

  • cellosaurus.org

    Cellosaurus, a knowledge resource for cell lines, provides cross-references to CLO IDs.

    Source: OBO Foundry registry
  • pubchem.ncbi.nlm.nih.gov

    NIH PubChem records include cross-references to CLO IDs.

    Source: OBO Foundry registry
  • lincsproject.org

    NIH LINCS project uses CLO for cell line annotation.

    Source: OBO Foundry registry
  • iedb.org

    Immune Epitope Database uses CLO for annotation

    Source: OBO Foundry registry

Know a project that uses CLO? Suggest it.

History & changes 1 run

History starts with the first archived run; changes appear after the next evaluation.

RunScoreFAIRVersion evaluatedTermsSnapshot
26 Oct 2026, 03:31 UTC86 A472026-06-1940,851JSON

Provenance

Every fact on this page was fetched automatically. Each row shows where it came from and when. If a source fails, the last good value is kept and marked “carried forward”.

FactSourceRetrieved
Homepage link check (HTTP 200)github.com26 Oct 2026, 02:43 UTC
Repository link check (HTTP 200)github.com26 Oct 2026, 02:43 UTC
Download link check (HTTP 200)purl.obolibrary.org26 Oct 2026, 02:43 UTC
Artefact header (version IRI)raw.githubusercontent.com26 Oct 2026, 02:43 UTC
Git refs (commit 27e5763, latest tag v2026-06-19)github.com26 Oct 2026, 02:43 UTC
GitHub repository statisticsapi.github.com26 Oct 2026, 02:43 UTC
OLS classes, imports, version & releaseebi.ac.uk26 Oct 2026, 02:43 UTC
OBO Foundry status, license & usagesobofoundry.org26 Oct 2026, 02:37 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 02:43 UTC
OBO Dashboard (checked 18 Jul 2026)dashboard.obofoundry.org26 Oct 2026, 02:37 UTC
Crossref citations (doi:10.1186/gb-2005-6-2-r21)api.crossref.org26 Oct 2026, 02:43 UTC

Run 2026-10-26T02-37-38Z · evaluator v2.0.0 · rubric v3.4 · entry.json · run snapshot

How to cite