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Clinical Trials API - ClinicalTrials.gov Search & Data Export

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Search ClinicalTrials.gov by condition, intervention, sponsor or status and pull clinical trial data into flat rows: NCT ID, status, phase, enrollment, sponsor, dates and locations. Ready for CSV, JSON or AI agent workflows, with no API key.

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from $2.10 / 1,000 results

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Joseph McRell

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NCT ID

nct_id

Optional

Unique ClinicalTrials.gov study identifier, the primary key for this record.

Type:string | null

Example:

NCT02545140

Title

title

Optional

Brief public title of the study.

Type:string | null

Example:

Screening for Hypoglycemia in an Institutionalized Elderly Diabetic Population.

Official Title

official_title

Optional

Full official protocol title as registered.

Type:string | null

Example:

A First-in-human Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of HM12460A

Acronym

acronym

Optional

Short study acronym the sponsor uses in publications, when one is registered.

Type:string | null

Example:

EMPA HF

Sponsor Protocol ID

org_study_id

Optional

The sponsor's own internal protocol number for this study.

Type:string | null

Example:

RT20240903

Secondary IDs

secondary_ids

Optional

Other registry, grant or regulatory identifiers for this study, comma separated (NIH grant numbers, EudraCT, WHO registry IDs).

Type:string | null

Example:

R01AT001103-01

Registering Organization

organization

Optional

Organization that submitted the record to ClinicalTrials.gov.

Type:string | null

Example:

Aalborg University Hospital

Organization Class

organization_class

Optional

Sector of the registering organization, for example INDUSTRY, NIH, OTHER_GOV or OTHER.

Type:string | null

Example:

OTHER

Source record URL

url

Optional

Canonical public ClinicalTrials.gov page for this study.

Type:string | null

Example:

https://clinicaltrials.gov/study/NCT02247271

Overall Status

status

Optional

Current recruitment status of the study, for example RECRUITING or COMPLETED.

Type:string | null

Example:

COMPLETED

Last Known Status

last_known_status

Optional

Last status recorded before the study became UNKNOWN because the sponsor stopped updating it.

Type:string | null

Example:

RECRUITING

Why Stopped

why_stopped

Optional

Sponsor's stated reason the study was terminated, suspended or withdrawn.

Type:string | null

Example:

Recruitment issue: Enrollment expectation not met

Status Verified Date

status_verified_date

Optional

Month the sponsor last verified the study status, the best available freshness signal.

Type:string | null

Example:

2022-08

Start Date

start_date

Optional

Date the study started.

Type:string | null

Example:

2021-07-01

Start Date Type

start_date_type

Optional

Whether the start date is ACTUAL or still ESTIMATED.

Type:string | null

Example:

ACTUAL

Primary Completion Date

primary_completion_date

Optional

Date of final data collection for the primary outcome measure.

Type:string | null

Example:

2021-07-01

Primary Completion Date Type

primary_completion_date_type

Optional

Whether the primary completion date is ACTUAL or ESTIMATED.

Type:string | null

Example:

ACTUAL

Completion Date

completion_date

Optional

Date the study as a whole ended or is expected to end.

Type:string | null

Example:

2021-07-01

Completion Date Type

completion_date_type

Optional

Whether the completion date is ACTUAL or ESTIMATED.

Type:string | null

Example:

ACTUAL

First Posted Date

study_first_post_date

Optional

Date the study record was first posted publicly.

Type:string | null

Example:

2019-01-08

Results First Posted Date

results_first_post_date

Optional

Date summary results were first posted, empty when no results are posted.

Type:string | null

Example:

2012-12-18

Last Update Posted

last_update

Optional

Date the most recent update to this record was posted.

Type:string | null

Example:

2024-04-12

Has Expanded Access

has_expanded_access

Optional

Whether the sponsor offers expanded access to the intervention outside the trial.

Type:boolean | null

Example:

false

Sponsor Class

sponsor_class

Optional

Sector of the lead sponsor, for example INDUSTRY, NIH, OTHER_GOV or OTHER.

Type:string | null

Example:

OTHER

Collaborators

collaborators

Optional

Other organizations collaborating on the study, comma separated.

Type:string | null

Example:

Antonella Bianco, Pietro Trisolini, Giuseppe Dalfino

Responsible Party Type

responsible_party_type

Optional

Who is accountable for the record, for example SPONSOR or PRINCIPAL_INVESTIGATOR.

Type:string | null

Example:

SPONSOR

Responsible Investigator

responsible_party_investigator

Optional

Name of the investigator named as responsible party.

Type:string | null

Example:

Olov Rolandsson

Responsible Investigator Title

responsible_party_title

Optional

Job title of the responsible investigator.

Type:string | null

Example:

Principle Investigator

Responsible Investigator Affiliation

responsible_party_affiliation

Optional

Institution the responsible investigator is affiliated with.

Type:string | null

Example:

Aalborg University Hospital

Has Data Monitoring Committee

oversight_has_dmc

Optional

Whether the study has an independent data monitoring committee.

Type:boolean | null

Example:

false

FDA Regulated Drug

is_fda_regulated_drug

Optional

Whether the study involves an FDA-regulated drug or biologic product.

Type:boolean | null

Example:

false

FDA Regulated Device

is_fda_regulated_device

Optional

Whether the study involves an FDA-regulated device product.

Type:boolean | null

Example:

false

Conditions

conditions

Optional

Diseases or conditions studied, as written by the sponsor, comma separated.

Type:string | null

Example:

Intradialytic Hypotension

Keywords

keywords

Optional

Sponsor-supplied search keywords for the study, comma separated.

Type:string | null

Example:

Diabetes, Foot, Infection, Staphylococcus pettenkoferi, Osteitis

MeSH Conditions

mesh_conditions

Optional

Normalized MeSH condition terms derived by ClinicalTrials.gov, comma separated. Use these instead of the free-text conditions when grouping studies.

Type:string | null

Example:

Insulin Resistance, Non-alcoholic Fatty Liver Disease

Interventions

interventions

Optional

Names of the interventions being tested, comma separated.

Type:string | null

Example:

Iopamidol injection 76%, iodixanol

Intervention Types

intervention_types

Optional

Distinct intervention categories used in the study, for example DRUG, DEVICE or BEHAVIORAL.

Type:string | null

Example:

OTHER

Intervention Other Names

intervention_other_names

Optional

Brand names, code names and synonyms for the interventions, comma separated.

Type:string | null

Example:

LDL-like nanoemulsion

MeSH Interventions

mesh_interventions

Optional

Normalized MeSH intervention or drug terms derived by ClinicalTrials.gov, comma separated.

Type:string | null

Example:

Hydroflumethiazide

Phase

phase

Optional

Trial phase or phases, for example PHASE2 or PHASE2, PHASE3. NA means a trial without FDA-defined phases.

Type:string | null

Example:

PHASE3

Study Type

study_type

Optional

Study design category, for example INTERVENTIONAL, OBSERVATIONAL or EXPANDED_ACCESS.

Type:string | null

Example:

INTERVENTIONAL

Enrollment

enrollment

Optional

Number of participants enrolled or targeted.

Type:integer | null

Example:

Enrollment Type

enrollment_type

Optional

Whether the enrollment number is ACTUAL or still ESTIMATED.

Type:string | null

Example:

ACTUAL

Allocation

allocation

Optional

How participants are assigned to arms, RANDOMIZED or NON_RANDOMIZED.

Type:string | null

Example:

RANDOMIZED

Intervention Model

intervention_model

Optional

Trial arm structure, for example PARALLEL, CROSSOVER or SINGLE_GROUP.

Type:string | null

Example:

PARALLEL

Primary Purpose

primary_purpose

Optional

Main objective of the study, for example TREATMENT, PREVENTION or DIAGNOSTIC.

Type:string | null

Example:

TREATMENT

Masking

masking

Optional

Level of blinding, for example NONE, SINGLE, DOUBLE, TRIPLE or QUADRUPLE.

Type:string | null

Example:

NONE

Who Masked

who_masked

Optional

Parties blinded to assignment, for example PARTICIPANT, INVESTIGATOR, OUTCOMES_ASSESSOR.

Type:string | null

Example:

PARTICIPANT, CARE_PROVIDER, INVESTIGATOR, OUTCOMES_ASSESSOR

Observational Model

observational_model

Optional

Design of an observational study, for example COHORT or CASE_CONTROL.

Type:string | null

Example:

COHORT

Time Perspective

time_perspective

Optional

Time direction of an observational study, for example PROSPECTIVE or RETROSPECTIVE.

Type:string | null

Example:

PROSPECTIVE

Arm Count

arm_count

Optional

Number of study arms or groups defined in the protocol.

Type:integer | null

Example:

Arm Groups

arm_groups

Optional

Labels of the study arms or groups, comma separated.

Type:string | null

Example:

Orally administered Labeled Glycerol

Primary Outcomes

primary_outcomes

Optional

Primary outcome measures, comma separated.

Type:string | null

Example:

Changes in Haematocrit following 7 days diuretic adminstration.

Primary Outcome Timeframe

primary_outcome_timeframe

Optional

Time frame over which the first primary outcome is measured.

Type:string | null

Example:

3 months follow-up

Secondary Outcomes

secondary_outcomes

Optional

Secondary outcome measures, comma separated.

Type:string | null

Example:

Length of ICU stay, Length of mechanical ventilation, Length hospital stay, Hospital mortality, Muscle wasting

Minimum Age

min_age

Optional

Youngest age eligible for the study.

Type:string | null

Example:

30 Years

Maximum Age

max_age

Optional

Oldest age eligible for the study.

Type:string | null

Example:

75 Years

Standard Age Groups

std_ages

Optional

Standardized age brackets the study accepts: CHILD, ADULT, OLDER_ADULT.

Type:string | null

Example:

ADULT, OLDER_ADULT

Sex

sex

Optional

Sex eligible for the study: ALL, FEMALE or MALE.

Type:string | null

Example:

ALL

Accepts Healthy Volunteers

healthy_volunteers

Optional

Whether the study accepts healthy volunteers.

Type:boolean | null

Example:

false

Sampling Method

sampling_method

Optional

Sampling approach in an observational study, PROBABILITY_SAMPLE or NON_PROBABILITY_SAMPLE.

Type:string | null

Example:

NON_PROBABILITY_SAMPLE

Study Population

study_population

Optional

Description of the population an observational study draws from.

Type:string | null

Example:

Primary clinical patients with chronic HCV infection divided into 2 groups according to liver fibrosis stage.

Eligibility Criteria

eligibility_criteria

Optional

Full inclusion and exclusion criteria text, truncated to 5000 characters.

Type:string | null

Example:

Recently diagnosed (within the last 6 months) patients with immune-mediated (type 1) diabetes

Location Count

location_count

Optional

Number of study sites listed on the record.

Type:integer | null

Example:

Recruiting Location Count

recruiting_location_count

Optional

Number of sites whose own record is marked RECRUITING. Empty when the source publishes no per-site status.

Type:integer | null

Example:

Countries

countries

Optional

Distinct countries with a study site, comma separated.

Type:string | null

Example:

Italy, Spain

States

states

Optional

Distinct states or provinces with a study site, comma separated.

Type:string | null

Example:

California

Cities

cities

Optional

Distinct cities with a study site, comma separated.

Type:string | null

Example:

Amsterdam

Locations

locations

Optional

Study sites as facility, city, state, country, comma separated and capped at 25 sites.

Type:string | null

Example:

Northwestern Medical Faculty Foundation, Chicago, Illinois, United States

First Location Latitude

first_location_lat

Optional

Latitude of the first study site that has coordinates.

Type:number | null

Example:

35.9132

First Location Longitude

first_location_lon

Optional

Longitude of the first study site that has coordinates.

Type:number | null

Example:

-79.05584

Central Contact Name

central_contact_name

Optional

Name of the central study contact for enrollment enquiries.

Type:string | null

Example:

Ursula Morjaria, MSc

Central Contact Email

central_contact_email

Optional

Email address of the central study contact.

Type:string | null

Example:

lilianagarna@yahoo.com

Central Contact Phone

central_contact_phone

Optional

Phone number of the central study contact.

Type:string | null

Example:

0431-88782168

Overall Official Name

overall_official_name

Optional

Name of the principal investigator or study director.

Type:string | null

Example:

Guanghui Li, MD, PhD

Overall Official Role

overall_official_role

Optional

Role of the overall official, for example PRINCIPAL_INVESTIGATOR or STUDY_DIRECTOR.

Type:string | null

Example:

PRINCIPAL_INVESTIGATOR

Overall Official Affiliation

overall_official_affiliation

Optional

Institution the overall official is affiliated with.

Type:string | null

Example:

Chung Shan Medical University

Brief Summary

brief_summary

Optional

Plain-language summary of the study, truncated to 2000 characters.

Type:string | null

Example:

We will test the HOPE intervention on changing behavior of people to exercise more (take more steps each day).

Detailed Description

detailed_description

Optional

Extended technical description of the study, truncated to 5000 characters.

Type:string | null

Example:

healthy volunteers undergo the TSST and stress hormones as cortisol and copeptin are measured

PubMed IDs

pmids

Optional

PubMed IDs of publications linked to this study, comma separated.

Type:string | null

Example:

35689272, 34505132

IPD Sharing

ipd_sharing

Optional

Whether individual participant data will be shared: YES, NO or UNDECIDED.

Type:string | null

Example:

Posted Document Types

document_types

Optional

Types of full documents posted with the record, for example Prot_SAP or ICF.

Type:string | null

Example:

Prot_SAP

Has Results

has_results

Optional

Whether summary results have been posted for this study.

Type:boolean | null

Example:

true

Serious Adverse Event Terms

serious_adverse_event_count

Optional

Number of distinct serious adverse event terms in the posted results. Empty when no results are posted.

Type:integer | null

Example:

Other Adverse Event Terms

other_adverse_event_count

Optional

Number of distinct non-serious adverse event terms in the posted results. Empty when no results are posted.

Type:integer | null

Example:

Data Version Date

version_date

Optional

Date of the ClinicalTrials.gov data snapshot this record came from.

Type:string | null

Example:

2026-09-11

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