EU evidence access
OpenEvidence left Europe.
Amass is hosted here.
Your evidence search still needs a home. Amass lets clinicians, researchers and life science teams search biomedical literature, clinical trials and regulatory sources, with a citation for each claim, on infrastructure hosted in the EU.
Amass is for research and evidence review. It is not a diagnostic tool, a medical device or a replacement for clinical judgment.
Free access, no card required
Free for clinicians and researchers in Europe
The free tier is open to verified European clinicians, researchers, medical faculty and life science professionals. Sign up with your work or institutional email and start searching, with source links on every citation.
- Search of biomedical literature, clinical trials, patents and regulatory documents
- Inline citations linking directly to primary sources
- EU-hosted infrastructure: your queries stay in Europe
- No patient data required or intended
- A monthly query allowance; upgrade only if you need more
Free tier
no credit card required
Start NowSign up with your work or institutional email.
Free monthly allowance included. Upgrade only if you need more.
Important: read before using
Amass is for research, evidence discovery and scientific intelligence. It is not a medical device and does not provide diagnosis, treatment recommendations or clinical decision support. Amass is not designed for point-of-care use and should not replace clinical judgment or direct patient care. Users are responsible for independently verifying all information and applying appropriate professional standards. Amass does not require or store patient data. Please do not enter personal health information or other patient-identifiable data.
What Amass covers
Literature, trials and patents, each cited to source
Biomedical literature
Search 43M+ papers from PubMed and PubMed Central. Each result links to the original source, so you can open the paper and check the passage.
43M+ papers
Clinical trials
Search 1.2M+ trials from ClinicalTrials.gov and the WHO ICTRP registries. Filter by indication, phase, sponsor, intervention and outcome to see what is being studied, where and by whom.
1.2M+ clinical trials
Patents and regulatory documents
Search patents and FDA and EMA regulatory documents alongside the literature and trial data, to see what has been filed, approved or studied in an area.
170M+ patents
How it works
Ask in plain language, get cited evidence
01 Ask
Type a question in plain language
Anything from a broad evidence question to a specific condition, target, drug, trial, mechanism or company. No query syntax or filters.
02 Retrieve
Results come with citations
Amass searches biomedical literature, trial records and patents, then returns a structured answer with links to the original sources.
03 Review
Read the sources, not just the summary
Amass shows what evidence it found, where it came from and where the gaps are, so you can check it and apply your own judgment.
Amass returning cited evidence from the biomedical literature. Each statement links to its source.
Get Started Today
For European clinicians, hospital doctors, researchers and medical faculty. No credit card, no time limit.
Get AccessSign up with your work or institutional email.