You may want to use a field not listed under the Search(able) Field options or you might want to search multiple fields for specific text. You can do this by typing in Custom Field(s), as you have seen in some of the examples in the Search Options/Glossary section. You may also choose to use a combination of custom fields and Refine Panel options to perform your search. Learn more in the Search Strategies tutorial.
Below are the custom fields you can use within the Clinical Trials dataset. Ontologies and other fields with more than one variety of the field are highlighted below. For fields with no display name, this indicates that you’ll need to use either a custom field to limit your results. Be sure to enter the custom field in its exact form, as shown below.
For fields that are numeric, you can search for a range of values using a syntax such as this:
firstResultsReceivedDate:[2004-01-01 TO 2005-01-01]
If you wish to search multiple criteria in the same field, you can do so using a capitalized OR between the two criteria:
overallStatus:(Completed OR Terminated)
Below is a list of the fields along with their custom syntax and an example query for formatting purposes. At the bottom of this article, you will also find custom fields for linked data. You can use the headers below to jump to different custom field tables:
Clinical Trial fields
Linked Data
Clinical Trial fields
| Field Name | Custom Field: Example Query |
| Acronym | acronym:LEAP |
| AI labels: Broad | k30ClusterLabels:"Drug therapy" |
| AI labels: Intermediate | k150ClusterLabels:Vaccines |
| AI labels: Narrow | k500ClusterLabels:Immunogenicity |
|
All People (Combination of investigator and contact fields) |
|
| Affiliations (Broad Synonym) | allPeople.affiliationsBroadSynonym:Icahn |
| Affiliations (Preferred) | allPeople.affiliationsPreferred:Icahn |
| Degrees | allPeople.degrees:"PhD" |
| First Name | allPeople.firstName:Nynke |
| All People Role | allPeople.role:"Principal Investigator" |
| Last Name | allPeople.lastName:"Jager" |
| Name | allPeople.fullName:"Jager, Nynke" |
| Type | allPeople.type:official |
| Allocation | allocation:randomized |
| Arm Group | |
| Arm Group Description | armGroups.description:trial |
| Arm Group Label | armGroups.label:Perampanel |
| Arm Group Type | armGroups.type:Experimental |
| Biospec Description | biospecDescription:"tissue specimens" |
| Biospec Retention | biospecRetention:"Samples With DNA" |
| Brief Summary | briefSummary:bronchoprovocation |
| Brief Title | briefTitle:"T-Cells in Asthma" |
| Chemicals & Drugs (Broad Synonym) | chemicalsDrugsBroadSynonym:"Insulin" |
| Chemicals & Drugs (Preferred) | chemicalsDrugsPreferred:"Chondroitin Sulfate" |
| Collaborator | |
Collaborator Agency Class |
collaboratorAgencyClass:"NIH" |
Collaborator Agency (Broad Synonym) |
collaboratorAgencyBroadSynonym:"NIAID" |
Collaborator Agency (Preferred) |
collaboratorAgencyPreferred:"National Institute of Allergy and Infectious Diseases" |
| Completion Date | completionDate:1995-10-01 |
| Completion Date Type | completionDateType:actual |
| Condition | |
Condition (Broad Synonym) |
conditionBroadSynonym:Cancer |
Condition (Preferred) |
conditionPreferred:"Diabetes Insipidus" |
| CT Reported Condition | ctReportedConditionsExact:Migraine |
| Contacts | |
| Contacts Affiliation | contacts.affiliationsPreferred:"University of Cincinnati" |
| Contacts Degrees | contacts.degrees:MD |
| Contacts First Name | contacts.firstName:"Carolyn" |
| Contacts Last Name | contacts.lastName:"Durham" |
| Contacts Name | contacts.fullName:"Durham, Carolyn" |
| Contacts Type | contacts.type:"facility contact" |
| CT URL | ctUrlExact: "https://clinicaltrials.gov/study/NCT00000300" |
| Detailed Description | detailedDescription:IL-4 |
| Devices (Broad Synonym) | devicesBroadSynonym:"Stent" |
| Devices (Preferred)^ | devicesPreferred:"Ureteral Stent" |
| Early Phase | earlyPhase:Yes |
| Eligibility criteria (all of the eligibility fields below) | eligibilityCriteria:"allergic reactions” |
| Eligibility Criteria | eligibility.eligibilityCriteria:(youth) |
| Exclusion Criteria | eligibility.exclusionCriteria:"heart failure" |
| Gender | eligibility.gender:All |
| Inclusion Criteria | eligibility.inclusionCriteria:"Clinical diagnosis" |
| Maximum Age | eligibility.maximumAge:65 |
| Minimum Age | eligibility.minimumAge:18 |
| Enrollment Count | enrollmentCount:640 |
| Enrollment Type | enrollmentType:actual |
| Facility | |
Facility Cities |
facilities.city:Bethesda |
Facility Countries |
facilities.country:"United States" |
Facility Investigator Names |
facilities.investigators:"Hoffman, Eric" |
Facility Investigator Roles |
facilities.investigatorRoles:"Principal Investigator" |
Facility Name |
facilities.name:"Massachusetts General Hospital" |
Facility States |
facilities.state:Massachusetts |
Facility Zips |
facilities.zip:02114 |
| FDA Regulated Device | fdaRegulatedDevice:yes |
| FDA Regulated Drug Product | fdaRegulatedDrug:yes |
| First Received Date | firstReceivedDate:[2004-01-01 TO 2005-01-01] |
| First Received Year | firstReceivedYear:2003 |
| First Results Received Date | firstResultsReceivedDate:[2001-01-01 TO 2020-01-01] |
| Has Raw PMIDs | hasRawPmids:Yes |
| Has Results PMIDs | hasRawResultsPmids:Yes |
| Has Results | hasResults:Yes |
| Intervention | |
| Intervention Description | intervention.description:"Tranexamic acid injection" |
| Intervention Model | model:"Parallel Assignment" |
| Intervention Model Description | modelDescription:"Single Dose" |
| Intervention Name | intervention.name:Cisplatin |
| Intervention Type | intervention.typeExact:(Behavioral) |
| Other Intervention Names | intervention.otherNames:Doxorubicin |
| Investigator | |
|
Investigator Affiliations (Broad Synonym) |
investigators.affiliationsBroadSynonym:Icahn |
| Investigator Affiliations (Preferred)^ | investigators.affiliationsPreferred:Icahn |
| Investigator Degrees | investigators.degrees:MD |
| Investigator Names | investigators.fullName,investigators.variants:"Chesler, David" |
| Investigator Roles | investigators.role:"principal investigator" |
| Investigator Type | investigators.type:"official" |
| Keywords | keywords:Interleukin-5 |
| Last Changed Date | lastChangedDate:2017-11-01 |
| Linked Data | linkedDataExact:(Grants and literature) |
Linked Grants |
hasGrants:Yes |
Linked Literature |
hasPublications:Yes |
| Location Country | locationCountry:"United States" |
| Masking | masking:none |
| Masking Description | maskingDescription:"Double blind" |
| MeSH Plus^ | meshPlusBroadSynonym:Human |
MeSH Plus (Broad Synonym) |
meshPlusBroad:cancer |
MeSH Plus (Preferred) |
meshPlusPreferred:cancer |
| NIH Linked | nihFunded:Yes |
| Number Of Arms | numberOfArms:1 |
| Number Of Groups | numberOfGroups:5 |
| Observational Model | observationalModel:cohort |
| Official Title | officialTitle:INSTAGE |
| Outcomes | |
Other Outcome Descriptions |
otherOutcomes.description:“insulin” |
Other Outcome Measures |
otherOutcomes.measure:“lipid profile” |
Other Outcome Time Frame |
otherOutcomes.timeFrame:“2 weeks” |
Primary Outcome Descriptions |
primaryOutcomes.description:”insulin” |
Primary Outcome Measures |
primaryOutcomes.measure:“lipid profile” |
Primary Outcome Time Frame |
primaryOutcomes.timeFrame:”2 weeks” |
Secondary Outcome Description |
secondaryOutcomes.description:“glucose levels” |
Secondary Outcome Measure |
secondaryOutcomes.measure:“Long-term Survival” |
Secondary Outcome Time Frame |
secondaryOutcomes.timeFrame:“at baseline” |
| Overall Status | overallStatus:Completed |
| Phase | phase:"Phase 1" |
| Primary Completion Date | primaryCompletionDate:1995-10-01 |
| Primary Completion Date Type | primaryCompletionDateTypeExact:Anticipated |
| Primary Purpose | primaryPurpose:treatment |
| Principal Investigator (PI) | |
| PI Affiliations (Broad Synonym) | principalInvestigator.affiliationsBroadSynonym:MGH |
| PI Affiliations (Preferred) | principalInvestigator.affiliationsPreferred:"Massachusetts General Hospital" |
| PI Degrees | principalInvestigator.degrees:MD |
| PI Name | principalInvestigator.fullName:“Jager, Nynke” |
| Raw PMIDs | rawPmids:21173639 |
| Raw Results PMIDs | rawResultsPmids:26226243 |
| Results First Posted Date | resultsFirstPostedDate:[2020-01-01 TO 2021-01-01] |
Results First Posted Date Type |
resultsFirstPostedDateTypeExact:(Actual) |
| Source(s) | recordSource:clinicaltrials.gov |
| Sponsor | |
Lead Sponsor Agency Class |
leadSponsorAgencyClass:NIH |
Lead Sponsor Agency (Broad Synonym) |
leadSponsorAgencyBroadSynonym:"NIAID" |
Lead Sponsor Agency (Preferred) |
leadSponsorAgencyPreferred:"National Institute of Allergy and Infectious Diseases" |
Sponsor Class |
allSponsors.class:Industry |
Sponsor Name (Broad Synonym) |
allSponsors.nameBroadSynonym:Sanofi |
Sponsor Name (Preferred) |
allSponsors.namePreferred:Sanofi |
Sponsor Type |
allSponsors.type:"Lead" |
| Start Date | startDate:1994-09-14 |
| Start Date Type | startDateType:anticipated |
| Start Year | startYear:2020 |
| Study Model | model:"Parallel Assignment" |
| Study Type | studyType:Interventional |
| System ID | id:NCT00001408 |
| Target (Broad Synonym) | targetBroadSynonym:EGFR |
| Target (Preferred)^ | targetPreferred:EGFR |
| Total Linked Data counts | |
|
Total Number of Linked Grants (Total Grants Count) |
grantsCount:5 |
Disambiguation Document Count |
disambiguationCount:10 |
Spires Document Count |
spiresCount:5 |
|
Total Number of Linked Literature (Total Literature Count) |
pubCount:10 |
| Unapproved Device | unapprovedDevice:no |
| US Export | usExport:no |
| Verification Date | verificationDate:2016-09-01 |
^ For fields that have broad and preferred synonyms, the searchable field automatically searches and returns results matching the broad synonym. If you are aiming for more specific results, use the other custom field options, such as Preferred. Learn more here: Taxonomy and Synonym Search
Linked Data
| Field Name | Custom Field: Example Query |
| Count of Grants | grantsCount:5 |
Disambiguation Document Count |
disambiguationCount:10 |
Spires Document Count |
spiresCount:5 |
| Count of Literature | pubCount:10 |
Linked Grants
| Field Name | Custom Field: Example Query |
| Linked Grant Activity Code | linkedStubs.publicgrants.activityCode:R01 |
| Linked Grant Admin IC | linkedStubs.publicgrants.adminIcLong:NHLBI |
| Linked Grant Appl ID | linkedStubs.publicgrants._id:10118126 |
| Linked Grant Fiscal Year | linkedStubs.publicgrants.fy:2004 |
| Linked Grant Funding Agency | linkedStubs.publicgrants.agency:"National Institutes of Health" |
| Linked Grant Number | linkedStubs.publicgrants.grantNumber:R01HL130883 |
| Linked Grant PI IDs | linkedStubs.publicgrants.piIds:1858128 |
| Linked Grant PI Names | linkedStubs.publicgrants.piNames:Leonidas |
Linked Publications
| Field Name | Custom Field: Example Query |
| Linked Publications Authors | linkedStubs.publications.authors:Garcia |
| Linked Publications Citations | linkedStubs.publications.citedByPmidCount:[100 TO *] |
| Linked Publications Link Type | linkedStubs.publications.linkType:(cited AND published) |
| Linked Publication PMID | linkedStubs.publications.pmid:26569033 |
| Linked Publication RCR | linkedStubs.publications.rcr:[1.00 TO 1.5] |
| Linked Publication Title | linkedStubs.publications.title:children |
| Linked Publication Year | linkedStubs.publications.pubYear:2006 |