Clinical Trial Monitor: Track Trials, Sponsors and Status Changes

Search ClinicalTrials.gov by condition, sponsor, drug or country and get one flat row per trial — phase, status, enrolment, sponsor, sites and countries. On every run after the first you also get what moved: new trials, status changes, and results going up.

Built for teams who need to know what a competitor is running before it reaches a press release.

How it works

flowchart LR
    A["Condition, sponsor<br/>or drug"] --> B["ClinicalTrials.gov v2 API"]
    B --> C["One flat row per trial"]
    C --> D{"Compared to last run"}
    D -->|not seen| E["new-study"]
    D -->|status moved| F["status-changed"]
    D -->|results up| G["results-posted"]
    E --> H[("Trial feed")]
    F --> H
    G --> H

No scraping and no API key. This reads the registry's own v2 API, so it does not break when the site is restyled and it needs no proxy or browser.

Built for

• Competitive intelligence in pharma and biotech, watching a rival's pipeline
• CRO and site business development finding sponsors who are recruiting now
• Patient recruitment looking for open trials by condition and country
• Investors and analysts tracking a phase 3 towards readout
• Medical affairs and researchers keeping a disease area under watch

Input

{
  "condition": "melanoma",
  "sponsorClasses": ["INDUSTRY"],
  "phases": ["PHASE2", "PHASE3"],
  "recruitingOnly": true,
  "onlyChanged": true
}

Setting	What it does
condition	The disease area — the main search
sponsor	Watch one company's pipeline
intervention	A drug, device or procedure name
location	Country, state or city with a site
statuses	Limit to recruitment statuses at the source
phases / sponsorClasses / countries	Narrow the result set
minEnrollment	Drop the very small studies
recruitingOnly	Only trials open to enrolment
onlyChanged	Return nothing on a quiet run
timeBudgetSecs	How long a run may spend paging before returning what it has

Output

{
  "nctId": "NCT06104345",
  "title": "Nivolumab and Cabozantinib in Advanced Melanoma",
  "status": "RECRUITING",
  "isRecruiting": true,
  "phases": ["PHASE2"],
  "studyType": "INTERVENTIONAL",
  "enrollment": 150,
  "enrollmentType": "ESTIMATED",
  "leadSponsor": "National Cancer Institute (NCI)",
  "sponsorClass": "NIH",
  "conditions": ["Metastatic Melanoma", "Unresectable Melanoma"],
  "interventions": [{ "type": "DRUG", "name": "Nivolumab" }],
  "siteCount": 42,
  "recruitingSites": 31,
  "countries": ["United States"],
  "lastUpdateDate": "2026-09-21",
  "hasResults": false,
  "url": "https://clinicaltrials.gov/study/NCT06104345",
  "changeType": "status-changed",
  "previousStatus": "NOT_YET_RECRUITING",
  "checkedAt": "2026-09-21T18:25:07.330Z"
}

A trial changing status is the point. A competitor's phase 3 going from RECRUITING to COMPLETED is news, and a monitor that only reported trials it had never seen before would miss it entirely. Status moves come back as status-changed with the previous value, results appearing come back as results-posted.

recruitingSites is often the more useful number than siteCount: a trial with 42 registered sites and 3 actually recruiting is not the same opportunity.

Turn it into a competitor alert

{
  "condition": "non-small cell lung cancer",
  "sponsorClasses": ["INDUSTRY"],
  "onlyChanged": true
}

Schedule it daily. The first run records the landscape without alerting; every run after returns only trials that started, moved or reported.

Run it as an API

curl -X POST "https://api.apify.com/v2/acts/arched_friend~clinical-trial-monitor/run-sync-get-dataset-items?token=YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "condition": "alzheimer disease",
    "phases": ["PHASE3"],
    "recruitingOnly": true
  }'

Pricing

You pay $0.002 for each trial returned. A run that finds nothing new costs nothing.

Watching a disease area daily	Monthly cost
Checking the registry by hand	hours every week
Citeline, Evaluate and similar	$10,000 to $100,000 per year
This Actor	around $3 per month at 50 changed trials a day

Common questions

Why did the first run return everything? A first run has no baseline, so alerting on the whole registry would be noise. Those rows are labelled first-run; the run after is when new-study and status-changed start meaning something.

Why is enrollment sometimes null? Because the sponsor has not published a target. It is reported as null rather than guessed, and a minimum-enrolment filter deliberately keeps those rows rather than hiding real trials behind a missing number.

Is isRecruiting ever null? Yes — when the registry publishes no overall status. That is reported as null rather than as a confident false, because "we do not know" and "not recruiting" are different answers.

Does it cover trials outside the US? Yes. ClinicalTrials.gov registers trials worldwide; filter with countries or location for a specific region.

Do I need an API key? No. The registry API is open and keyless.

Related products

• FDA Recall Monitor for what happens to products after approval
• Regulation Change Monitor for the FDA rules that shape trial design
• SEC Filing Monitor for the financial disclosures that follow a readout
• Federal Contract Finder for NIH and BARDA money going to the same sponsors