/euctis/trials/search

POST /api/euctis/trials/search

Price: 20 credits

Search authorised EU/EEA clinical trials in the EU Clinical Trials Information System. Narrows by free text, title, trial or EudraCT number, sponsor protocol code, medical condition, sponsor, end point, investigational product, orphan designation number, overall and per-member-state status, member states concerned, trial phase, MeSH therapeutic area, sponsor organisation type, age group, sex, population type, product role, EEA/non-EEA region, the rare-disease, orphan, low-intervention and transitioned flags, the results, clinical-study-report, serious-breach, unexpected-event and urgent-safety-measure flags, and the EEA start and end dates. Each result is the register summary of one trial.

How to use it

CTIS covers only trials applied for under Regulation 536/2014, so a European trial that started before the 2022 transition is on the eudract register instead unless its sponsor moved it — `transitioned_from_eudract` is what separates the moved ones, and `eudract_number` looks a trial up by its old identifier. The register orders by decision date, and no search can reach past its 10,000th row however large `count` is, so narrow with `member_states` or a date window rather than paging for a whole therapeutic area. `query` requires every word while `query_any` requires one, and both search the whole record rather than the title. Feed `id` to euctis/trials for the authorisation decisions, trial sites, products and document list.

Parameters

• access-token string required

Request body

• timeout integer — Max scrapping execution timeout (in seconds) (default: 300; min: 20; max: 1500)
• query string nullable — Free text that must appear in the trial record, every word of it (examples: "breast cancer"; minLength: 1)
• query_any string nullable — Free text of which any one word is enough to match (examples: "melanoma carcinoma"; minLength: 1)
• query_exclude string nullable — Free text that must NOT appear in the trial record (examples: "placebo"; minLength: 1)
• trial_title string nullable — Text matched against the trial title only (examples: "diabetes"; minLength: 1)
• trial_number string nullable — CTIS trial number, matched exactly (examples: "2025-524215-36-00"; minLength: 1)
• eudract_number string nullable — EudraCT number of the legacy trial this CTIS record was transitioned from (examples: "2021-000546-17"; minLength: 1)
• protocol_code string nullable — Sponsor's own protocol code (examples: "D8534C00001"; minLength: 1)
• medical_condition string nullable — Text matched against the medical conditions under investigation (examples: "cancer"; minLength: 1)
• sponsor string nullable — Text matched against the sponsor's name (examples: "Pfizer"; minLength: 1)
• end_point string nullable — Text matched against the trial end points (examples: "overall survival"; minLength: 1)
• product_name string nullable — Text matched against investigational product names (examples: "IBRANCE"; minLength: 1)
• orphan_designation_number string nullable — EU orphan designation number of a product in the trial (examples: "EU/3/15/1574"; minLength: 1)
• status array nullable — Keep trials whose overall CTIS status is one of these (one of: "under_evaluation", "authorised_recruitment_pending", "authorised_recruiting", "ongoing_recruiting", "ongoing_recruitment_ended", "temporarily_halted", "suspended", "ended", "expired", "revoked", "not_authorised", "cancelled")
• member_state_status array nullable — Keep trials that hold one of these statuses in at least one member state (one of: "under_evaluation", "authorised_recruitment_pending", "authorised_recruiting", "ongoing_recruiting", "ongoing_recruitment_ended", "temporarily_halted", "suspended", "ended", "expired", "revoked", "not_authorised", "cancelled")
• member_states array nullable — Lowercase ISO-3166 alpha-2 codes of the EU/EEA member states concerned (examples: ["fr","de"])
• phase array nullable — Keep trials in one of these trial phases (one of: "phase_1_first_in_human", "phase_1_bioequivalence", "phase_1_other", "phase_2", "phase_3", "phase_4", "phase_1_2_first_in_human", "phase_1_2_bioequivalence", "phase_1_2_other", "phase_2_3", "phase_3_4")
• therapeutic_areas array nullable — MeSH therapeutic-area codes as they appear in the record, for example C04 for neoplasms (examples: ["C04"])
• sponsor_type array nullable — Keep trials whose sponsor is one of these kinds of organisation (one of: "educational_institution", "health_care", "industry", "patient_organisation", "hospital_or_clinic", "laboratory_or_research_facility", "pharmaceutical_company", "non_pharmaceutical_company", "pharmaceutical_association")
• age_groups array nullable — Keep trials recruiting one of these age groups (one of: "in_utero", "under_18", "adults_18_64", "elderly_65_plus")
• sexes array nullable — Keep trials recruiting subjects of this sex (one of: "male", "female")
• population_type array nullable — Keep trials recruiting patients or healthy volunteers (one of: "healthy_volunteers", "patients")
• product_role array nullable — Keep trials carrying a product in one of these roles (one of: "test", "comparator", "placebo", "auxiliary")
• region array nullable — Keep trials run inside the EEA, outside it, or in both (one of: "eea_only", "non_eea_only", "both")
• rare_disease boolean nullable — Trial investigates a rare disease
• orphan_designated boolean nullable — A product in the trial holds an orphan designation
• low_intervention boolean nullable — Trial is a low-intervention clinical trial
• transitioned_from_eudract boolean nullable — Trial was transitioned into CTIS from the legacy EudraCT register
• has_results boolean nullable — A summary of results has been submitted
• has_clinical_study_report boolean nullable — A clinical study report has been submitted
• has_serious_breach boolean nullable — A serious breach has been reported
• has_unexpected_event boolean nullable — An unexpected event has been reported
• has_urgent_safety_measure boolean nullable — An urgent safety measure has been reported
• start_date_from string nullable — Keep trials whose EEA start date is on or after this date, YYYY-MM-DD (examples: "2024-01-01")
• start_date_to string nullable — Keep trials whose EEA start date is on or before this date, YYYY-MM-DD (examples: "2024-12-31")
• end_date_from string nullable — Keep trials whose EEA end date is on or after this date, YYYY-MM-DD (examples: "2026-01-01")
• end_date_to string nullable — Keep trials whose EEA end date is on or before this date, YYYY-MM-DD (examples: "2026-12-31")
• sort string — Field the result set is ordered by (default: "decision_date"; one of: "decision_date", "ct_number", "sponsor")
• order string — Sort direction (default: "desc"; one of: "asc", "desc")
• count integer required — Number of trials to return (min: 1; max: 10000)

Response

• @type string (default: "EuctisTrial")
• id string required
• url string (default: "")
• short_title string nullable
• status string (default: "")
• status_code string nullable
• sponsor string nullable
• sponsor_type string nullable
• phase string nullable
• conditions string nullable
• therapeutic_areas array (default: [])
• product string nullable
• countries array (default: [])
  • @type string (default: "EuctisTrialCountry")
  • country string (default: "")
  • status string (default: "")
  • status_code string nullable
• region string nullable
• age_groups array (default: [])
• secondary_age_range_codes array (default: [])
• sexes array (default: [])
• total_enrolled integer nullable
• primary_end_point string nullable
• end_point string nullable
• has_results boolean nullable
• decision_date string nullable
• decision_dates_by_country string nullable
• start_date string nullable
• end_date string nullable
• global_end_date string nullable
• updated_date string nullable
• published_update_date string nullable

Errors

• 422 — A date field was not YYYY-MM-DD, or a member state or therapeutic-area code was not recognised. Check the fields against this schema. A URN with the wrong prefix is the most common cause.
• 408 — The request ran past its time limit Raise `timeout` in the request body, up to the maximum this endpoint documents. Lowering `count` or turning off the `with_*` flags also helps, because less work finishes sooner.
• 412 — No CTIS trial matched those filters. Retrying will not help: either the entity does not exist, or the input points at a different one.
• 429 — Too many requests: a rate limit or a usage window is exhausted When the response carries an X-Retry-After header, wait that many seconds and retry: the same number is in the body as `detail.retry_after`, and the limit clears once that window passes. The message in the body names the limit that was hit.
• 500 — Something broke on our side Retrying will not help. If it keeps happening, send us the X-Request-ID from the response headers.
• 529 — Rate limit reached, or the endpoint is overloaded Wait at least 30 seconds, then retry.

Response headers

• X-Error — Error message text (present only on error)
• X-Request-ID — Unique request identifier
• X-Execution-Time — Execution time in seconds
• X-Result-Count — How many records the body carries. 0 means an empty result, which is a normal answer and not by itself an error. A non-zero count can come back together with X-Error when the failure happened partway through — read this header and X-Error independently.
• X-Total-Available-Results — How many records exist for this query, when the endpoint can say. On a `dry_run` request this is the answer and the body is empty. It saturates: the endpoint's documented maximum means 'at least that many', any smaller number is exact.
• X-Warning — Present when the request body carried keys this endpoint does not document. They were ignored, so any filter you meant to apply through them did not apply. Check the spelling against this schema and retry.
• X-Retry-After — Seconds to wait before retrying. Present only on 429.