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ClinicalTrials.gov public records Last synced Oct 3, 2026, 7:31 PM EDT

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Showing 25–48 of 189 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: No intervention, this is an observational study Clear all
Not listed No phase listed Observational

Diagnosis of Alzheimer's Disease Using Event Related Potentials

NCT02957227
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
No intervention is part of this study but patients use an EEG device during observational data collection.
Device
Lead sponsor
VA Boston Healthcare System
Federal
Eligibility
50 Years to 100 Years
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Jamaica Plain, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 10, 2022 · Synced Oct 3, 2026, 7:31 PM EDT
Completed No phase listed Observational

A Qualitative Case Study of the Experiences of Children With Cancer as They Learn About Their Diagnosis and Treatment

NCT02041689
View directory record Official record
Conditions
Sarcoma
Interventions
Interview, Observations, Guided Activities
Behavioral
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
7 Years to 11 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 20, 2016 · Synced Oct 3, 2026, 7:31 PM EDT
Recruiting No phase listed Observational

Delineating the Molecular Spectrum and the Clinical, Imaging and Neuronal Phenotype of Chopra-Amiel-Gordon Syndrome

NCT05528744
View directory record Official record
Conditions
Genetic Disease, Chopra-Amiel-Gordon Syndrome, CAGS, ANKRD17
Interventions
Observational Study, Sample collection only
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Not listed
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Active, not recruiting Phase 2 Interventional

A Phase II Trial of Limited Surgery and Proton Therapy for Craniopharyngioma or Observation After Radical Resection

NCT01419067
View directory record Official record
Conditions
Craniopharyngioma
Interventions
Radical Surgery or Limited Surgery, Proton Therapy, ^1^8F-fluorodeoxyglucose, ^1^1C-methionine
Procedure · Device · Drug
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Up to 21 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2031
U.S. locations
2
States / cities
Jacksonville, Florida • Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Completed No phase listed Observational Results available

Airway Limitation Study: Study In Primary Care Centers Of Chronic Bronchitis In Long-Term Cigarette Smokers Of At Least 40 Years Of Age With Symptoms Of Cough And Shortness Of Breath

NCT00442468
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Non-interventional study.
Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years and older
Enrollment
1,283 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
47
States / cities
Highlands Ranch, Colorado • Wheat Ridge, Colorado • Clearwater, Florida + 43 more
Source: ClinicalTrials.gov public record
Updated Jan 10, 2013 · Synced Oct 3, 2026, 7:31 PM EDT
Not yet recruiting No phase listed Observational

Observational Data Collection for Blood Hemoglobin Algorithm Validation in Pediatrics

NCT07706140
View directory record Official record
Conditions
Hemoglobin, Cerebral Oxygenation, Congenital Heart Disease
Interventions
Noninvasive hemoglobin monitoring
Device
Lead sponsor
Boston Children's Hospital
Other
Eligibility
0 Days to 21 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Biomarkers for Vascular Contributions to Cognitive Impairment and Dementia Consortium

NCT06284213
View directory record Official record
Conditions
Cognitive Impairment, Dementia
Interventions
No interventions
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
60 Years to 90 Years
Enrollment
1,892 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
17
States / cities
Los Angeles, California • Sacramento, California • San Francisco, California + 12 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced Oct 3, 2026, 7:31 PM EDT
Recruiting No phase listed Observational

Developing a Decision Instrument to Guide Abdominal-pelvic CT Imaging of Blunt Trauma Patients

NCT04937868
View directory record Official record
Conditions
Abdominal Injury, Pelvic Fracture, Genital Hemorrhage, Lumbar Spine Injury, Hip Injuries, Liver Injury, Spleen Injury, Renal Injury, Diaphragm Injury, Aortic Rupture, Aortic Dissection, Bowel Disease, Vascular System Injuries, Sacral Fracture
Interventions
There are no interventions associated with this study
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
Not listed
Enrollment
12,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Recruiting No phase listed Observational

GBE Deficiency (GSD IV and APBD) Natural History Study

NCT02683512
View directory record Official record
Conditions
Glycogen Storage Disease Type IV, Adult Polyglucosan Body Disease, GSD4, GSD IV, APBD
Interventions
No intervention
Other
Lead sponsor
Duke University
Other
Eligibility
0 Years to 90 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2035
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Completed No phase listed Observational

A Study to Describe Mothers' and Babies' Outcomes After Exposure to HyQvia During Pregnancy

NCT05803200
View directory record Official record
Conditions
Exposure During Pregnancy
Interventions
No intervention
Drug
Lead sponsor
Takeda
Industry
Eligibility
16 Years to 44 Years · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 25, 2023 · Synced Oct 3, 2026, 7:31 PM EDT
Completed No phase listed Observational

Optical Spectroscopy for Cutaneous Cancer

NCT02522793
View directory record Official record
Conditions
Suspicious Skin Lesion(s) Requiring a Biopsy
Interventions
No intervention; this is an observational study
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Oct 3, 2026, 7:31 PM EDT
Completed No phase listed Observational

Assessment of Patterns of Patient Reported Outcomes in Adults With Congenital Heart Disease - International Study II

NCT04902768
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
This is an observational study, there is no intervention
Other
Lead sponsor
KU Leuven
Other
Eligibility
18 Years and older
Enrollment
8,415 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
10
States / cities
San Francisco, California • Stanford, California • Gainesville, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Oct 3, 2026, 7:31 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Intergenerational Effects of Paternal Periconceptional Cannabis and Other Drug Use (EPIC)

NCT04436055
View directory record Official record
Conditions
Cannabis Use, Drug Use, Development, Infant
Interventions
No Intervention will be used
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 40 Years
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 3, 2023 · Synced Oct 3, 2026, 7:31 PM EDT
Withdrawn No phase listed Observational

Nerve Transfers to Restore Hand Function in Spinal Cord Injury

NCT02861612
View directory record Official record
Conditions
Quadriplegia, Spinal Cord Diseases, Spinal Cord Injuries
Interventions
Nerve Transfer Surgery
Procedure
Lead sponsor
Ottawa Hospital Research Institute
Other
Eligibility
18 Years to 60 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 21, 2019 · Synced Oct 3, 2026, 7:31 PM EDT
Recruiting No phase listed Observational

To Investigate Airway Oxygen Concentrations During Rigid Bronchoscopy Procedures Performed With High Frequency Jet Ventilation

NCT05881863
View directory record Official record
Conditions
Central Airway Obstruction
Interventions
No intervention
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Recruiting Not applicable Interventional

Percutaneous Intervention Versus Observational Trial of Arterial Ductus in Low Weight Infants

NCT05547165
View directory record Official record
Conditions
Ductus Arteriosus, Patent
Interventions
Percutaneous Patent Ductus Arteriosus Closure (PPC), Responsive Management Intervention, Echocardiogram, cardiac
Device · Combination Product · Diagnostic Test
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
7 Days to 32 Days
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
24
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Los Angeles, California + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 3, 2026, 7:31 PM EDT
Enrolling by invitation No phase listed Observational

A Long-term Observational Study in Participants Who Have Received PBGENE-HBV

NCT07254208
View directory record Official record
Conditions
Chronic HBV Infection
Interventions
PBGENE-HBV
Biological
Lead sponsor
Precision BioSciences, Inc.
Industry
Eligibility
19 Years to 80 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2040
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Completed No phase listed Observational

Mapping the Phenotype in Adults With Phelan-McDermid Syndrome

NCT03426059
View directory record Official record
Conditions
Phelan-McDermid Syndrome, Autism Spectrum Disorder, Intellectual Disability
Interventions
No Intervention
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
22 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
6
States / cities
Stanford, California • Chicago, Illinois • Bethesda, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2025 · Synced Oct 3, 2026, 7:31 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Metatranscriptomic Markers of Colonic Neoplasia

NCT07786818
View directory record Official record
Conditions
Colorectal Polyps
Interventions
This is an observational study that has no interventions
Other
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Not listed No phase listed Observational

Sensor-based Characterization of Depression

NCT04370002
View directory record Official record
Conditions
Unipolar Depression
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 3, 2023 · Synced Oct 3, 2026, 7:31 PM EDT
Completed No phase listed Observational

Prehospital Resuscitation On Helicopter Study

NCT02272465
View directory record Official record
Conditions
Traumatic Injuries
Interventions
No intervention
Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
15 Years and older
Enrollment
1,049 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
9
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2015 · Synced Oct 3, 2026, 7:31 PM EDT
Completed No phase listed Observational

Multi-Drug Resistant Organism (MDRO): Study of Highly Resistant Escherichia Coli

NCT04574596
View directory record Official record
Conditions
E Coli Infection
Interventions
no Intervention
Other
Lead sponsor
Duke University
Other
Eligibility
Not listed
Enrollment
300 participants
Timeline
2020 – 2021
U.S. locations
13
States / cities
Torrance, California • Aurora, Colorado • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2021 · Synced Oct 3, 2026, 7:31 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Advancing Stillbirth Prevention Through Innovative Risk Evaluation (ASPIRE) Clinical Study

NCT07669935
View directory record Official record
Conditions
GDM, Preterm Preeclampsia, Preeclampsia, Fetal Growth Restriction (FGR), Pregnancy Complications
Interventions
None (this is an observational study with no intervention)
Other
Lead sponsor
Medicines360
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
5,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Baton Rouge, Louisiana • Potsdam, New York
Source: ClinicalTrials.gov public record
Updated Sep 30, 2026 · Synced Oct 3, 2026, 7:31 PM EDT
Active, not recruiting No phase listed Observational

Tempus Priority Study: A Pan-tumor Observational Study

NCT05179824
View directory record Official record
Conditions
Breast Cancer, Prostate Cancer, Bladder Cancer, Lung Cancer, Brain Cancer, Pancreatic Cancer, Ovarian Cancer, Fallopian Tube Cancer, Peritoneal Cancer, Cancer of Liver, Cancer of Colon, Cancer of Head and Neck, Cancer of Stomach, Cancer of Gastrointestinal Tract, Cancer of Rectum, Cancer of Esophagus, Cancer of Skin, Cancer of Cervix, Cancer of Kidney, Cancer of Larynx, Cancer of Endometrium, Cancer of the Bile Duct, Cancer of Vulva, Cancer of Bone and Connective Tissue, Leukemia, Lymphoma, Spinal Cord Cancer
Interventions
Observation
Other
Lead sponsor
Tempus AI
Industry
Eligibility
Not listed
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
2
States / cities
Dallas, Texas • Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 6, 2025 · Synced Oct 3, 2026, 7:31 PM EDT