What is PubTator3?
PubTator3 is an AI-powered literature resource from NCBI at the US National Library of Medicine. It runs text-mining models over PubMed abstracts and the PubMed Central open access full-text articles, and automatically tags six key types of biomedical entities: genes, diseases, chemicals, genetic variants, species and cell lines. It also identifies common types of relations between them.
This means you can search by concept rather than by keyword. You can look for papers where a particular chemical is linked to a particular disease, combine semantic, relation, keyword and Boolean queries, and see the tagged entities highlighted in each abstract. The annotations, roughly a billion of them, are refreshed weekly, and the team reports that its entity-pair searches return more relevant papers than PubMed or Google Scholar. There is also a free API and bulk downloads, and the authors showed that connecting GPT-4 to the PubTator API made its answers more factual and verifiable.
Main Features
- Automatic tagging of genes, diseases, chemicals, variants, species and cell lines
- Relation search between two concepts
- Semantic, keyword and Boolean queries
- Covers PubMed and PMC open access full text
- Weekly updates, free API and bulk downloads
How to Get Started with PubTator3
- Go to ncbi.nlm.nih.gov/research/pubtator3.
- Type a gene, disease, chemical or a pair of concepts.
- Pick the suggested entity so the search uses the concept, not just the word.
- Browse the highlighted abstracts and open the full papers.
PubTator3 Pricing
PubTator3 is free. It is a public NCBI service, and its API and bulk data are also free to use.
Who Should Use It?
- Biomedical and genomics researchers
- Bioinformaticians building datasets
- Drug discovery teams scanning literature
- Graduate students in life sciences
- Developers grounding AI answers in PubMed
PubTator3 Alternatives
- Semantic Scholar: Free AI-powered search engine for scientific papers.
- Elicit: AI research assistant that finds papers and extracts key findings.
- Scite.ai: Shows how papers have been cited, supporting or contrasting.
Frequently Asked Questions
Is PubTator3 free?
Yes. PubTator3 is a free NCBI service, including its API and bulk downloads.
What does PubTator3 tag?
Genes, diseases, chemicals, genetic variants, species and cell lines, plus common relations between them.
How often is PubTator3 updated?
Its annotations are refreshed weekly as new PubMed and PMC content arrives.