🧬 ClinicalTrials Status History & Termination Intelligence

Get verified historical status transitions for a watchlist of ClinicalTrials.gov studies. Instead of comparing only today's snapshot with yesterday's, this Actor reads the registry's own version history and reconstructs each transition with its date, previous status, new status and changed record modules.

Why this is different

Most ClinicalTrials Actors search and export the latest study record. Some checkpoint current snapshots, which starts detecting changes only after you create a task. This Actor can immediately recover the already-published transition history for an NCT ID and distinguish real status transitions from ordinary protocol revisions.

📤 What you get

• Exact version and transition date
• Previous and new recruitment status
• Adverse-transition flag for Suspended, Terminated, Withdrawn and Unknown
• Deterministic severity and the modules changed in that version
• Current whyStopped, title, sponsor/class, phase, type, enrollment, conditions and interventions
• Current status, last update date, total version count and official study/history links

Example input

{"nctIds":["NCT04368728","NCT03545607"],"changedSince":"2020-01-01","includeAllVersions":false,"riskTransitionsOnly":false,"maxEventsPerTrial":50}

Set includeAllVersions to inspect protocol, outcome, eligibility and location revision activity even when recruitment status did not move. Use riskTransitionsOnly for a compact termination/suspension alert feed.

💰 Pricing

Pay per verified history event. Empty or invalid-transition result sets do not incur result charges; use Apify's per-run charge ceiling for a hard budget cap.

Data comes from the official ClinicalTrials.gov API and record-history service maintained by the U.S. National Library of Medicine.

📥 Complete input reference

Field	Type	Default	Purpose
nctIds	array	["NCT04368728"]	Trial IDs to audit, such as NCT04368728. Up to 200 per run.
changedSince	string	—	Optional ISO date YYYY-MM-DD. Leave empty for complete status history.
includeAllVersions	boolean	false	Also emit revisions where the status stayed the same, with the changed module labels.
riskTransitionsOnly	boolean	false	Keep transitions into Suspended, Terminated, Withdrawn or Unknown status.
maxEventsPerTrial	integer	50	Newest matching history events retained for each NCT ID.

📤 Complete output reference

The default dataset is exportable as JSON, CSV, Excel, XML or RSS. Fields remain stable for scheduled runs and API integrations.

Field	Type
eventKey	string
nctId	string
version	integer
changeDate	string
previousStatus	string / null
newStatus	string
isStatusTransition	boolean
isAdverseTransition	boolean
severity	string
changedModules	array
whyStopped	string
briefTitle	string
officialTitle	string
leadSponsor	string
sponsorClass	string
phases	array
studyType	string
enrollment	integer / null
conditions	array
interventions	array
currentOverallStatus	string
currentLastUpdatePosted	string
historyVersionCount	integer
officialStudyUrl	string
officialHistoryUrl	string
scrapedAt	string

🔌 API & integrations

Run this Actor from the Apify Console, API, CLI, MCP, Make, Zapier or n8n. Replace the Actor identifier and token in this template:

curl -X POST "https://api.apify.com/v2/acts/clinicaltrials-status-history-intelligence/runs?token=YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{}'

Results are stored in the run's default dataset and can be forwarded with Apify webhooks or scheduled Tasks.

🔎 Search keywords

ClinicalTrials Status History & Termination Intelligence, clinicaltrials, status, history, termination, intelligence, Apify Actor, scraper API, structured data, scheduled monitor, automation.