---
id: "efo_id"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["science"]
langs: ["common"]
quality: 85
url: "http://registry.apicrafter.io/datatype/efo_id"
---

# Experimental Factor Ontology (EFO) ID (`efo_id`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Identifier of a term in the Experimental Factor Ontology of EMBL-EBI, which describes the variables of experiments in EBI databases, such as diseases, anatomy, cell types and chemical compounds. It is EFO: and seven digits; URIs write EFO_ instead.

- Personal data (PII): no
- Categories: Scientific (science)
- Countries: global
- Languages: Common to most languages (common)
- Classification: categorical

## Detection

Regular expression (Python `re`):

```
^EFO[:_]\d{7}$
```

## Examples

- `EFO:0000270` — asthma
- `EFO:0005147` — Columbia ecotype; Bioregistry example
- `EFO_0000270` — asthma, underscore form
- `EFO:270` (invalid example) — Not padded to seven digits

## Mappings

- bioregistry: `efo`
- wikidata: `P11956`

## Sources

- doc: <https://www.ebi.ac.uk/ols4/ontologies/efo>
- other: <https://bioregistry.io/registry/efo>
- wikidata: <https://www.wikidata.org/wiki/Property:P11956>

## Quality

Score 85/100. Missing: translation, detector coverage.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/efo_id.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/science/efo_id.yaml>