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ClinicalTrials.gov public records Last synced Oct 19, 2026, 11:37 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 673–696 of 4,385 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: observational study Clear all
Completed No phase listed Observational

The Natural History of Infantile Globoid Cell Leukodystrophy

NCT00983879
View directory record Official record
Conditions
Infantile Globoid Cell Leukodystrophy
Interventions
Not listed
Lead sponsor
Zymenex A/S
Industry
Eligibility
Up to 2 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 8, 2018 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational

Seven Year Update of Macular Degeneration Patients

NCT01256827
View directory record Official record
Conditions
Age-related Macular Degeneration
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
55 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
12
States / cities
Beverly Hills, California • Los Angeles, California • Mountain View, California + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2013 · Synced Oct 19, 2026, 11:37 PM EDT
Not listed No phase listed Observational

Acute Optic Neuritis Network: an International Study That Invesitages Subjects With a First-ever Episode of Acute Inflammation of the Optic Nerve

NCT05605951
View directory record Official record
Conditions
Demyelinating Diseases, Multiple Sclerosis, Neuromyelitis Optica Spectrum Disorder Attack, Myelin Oligodendrocyte Glycoprotein Antibody-associated Disease, Optic Neuritis
Interventions
non-interventional study
Other
Lead sponsor
Experimental and Clinical Research Center, a cooperation between the Max Delbrück Center for Molecul
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
3
States / cities
Aurora, Colorado • Boston, Massachusetts • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 4, 2022 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational

International SARS-CoV-2 (COVID-19) Infection Observational Study

NCT04385251
View directory record Official record
Conditions
COVID, COVID19, SARS-CoV 2, Dyspnea
Interventions
Data Collection
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
11,973 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 16, 2022 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational

Safety Follow-up Study for Subjects With Agitation Associated With Dementia of the Alzheimer's Type Who Previously Participated in a Double-blind Trial of Brexpiprazole or Placebo

NCT02192554
View directory record Official record
Conditions
Agitation Associated With Alzheimer's Disease, Alzheimer's Type, Mental Disorder, Nervous System Diseases
Interventions
Not listed
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
Not listed
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
28
States / cities
Tuscaloosa, Alabama • Costa Mesa, California • Lakewood, California + 21 more
Source: ClinicalTrials.gov public record
Updated Apr 30, 2018 · Synced Oct 19, 2026, 11:37 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Impact of Endometrial Compaction in Euploid Frozen Embryo Transfers

NCT04330066
View directory record Official record
Conditions
Infertility, Female
Interventions
Abdominal ultrasound measurement of the endometrial lining
Diagnostic Test
Lead sponsor
Boston IVF
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
187 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 11, 2022 · Synced Oct 19, 2026, 11:37 PM EDT
Active, not recruiting No phase listed Observational

A Multicenter, Prospective, Long-term, Observational Registry of Pediatric Patients With Inflammatory Bowel Disease

NCT00606346
View directory record Official record
Conditions
Crohn's Disease, Ulcerative Colitis, Indeterminate Colitis, Inflammatory Bowel Diseases
Interventions
Anti TNF therapy including infliximab, No Biologics
Biological · Drug
Lead sponsor
Janssen Biotech, Inc.
Industry
Eligibility
1 Month to 17 Years
Enrollment
4,970 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2038
U.S. locations
58
States / cities
Mobile, Alabama • Phoenix, Arizona • Los Angeles, California + 55 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 19, 2026, 11:37 PM EDT
Completed Phase 2 Interventional Results available

Bicalutamide With or Without Akt Inhibitor MK2206 in Treating Patients With Previously Treated Prostate Cancer

NCT01251861
View directory record Official record
Conditions
Recurrent Prostate Carcinoma, Stage I Prostate Cancer AJCC v7, Stage IIA Prostate Cancer AJCC v7, Stage IIB Prostate Cancer AJCC v7, Stage III Prostate Cancer AJCC v7
Interventions
Akt Inhibitor MK2206, Bicalutamide, Clinical Observation, Laboratory Biomarker Analysis
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Male only
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2026
U.S. locations
192
States / cities
Palo Alto, California • Aurora, Colorado • Boulder, Colorado + 139 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Oct 19, 2026, 11:37 PM EDT
Completed Phase 3 Interventional Results available

Study of the Safety of Brolucizumab 6 mg in Prefilled Syringe in Patients With Neovascular Age Related Macular Degeneration

NCT03930641
View directory record Official record
Conditions
Neovascular Age Related Macular Degeneration
Interventions
RTH258
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
50 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
3
States / cities
Altamonte Springs, Florida • Pensacola, Florida • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 5, 2021 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational Results available

Observational Study of Fat Loss in HIV Infected Adults Taking Nucleoside Reverse Transcriptase Inhibitors (NRTIs)

NCT00119405
View directory record Official record
Conditions
HIV Infections, Lipodystrophy, Metabolic Diseases, Nutrition Disorders
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 30, 2017 · Synced Oct 19, 2026, 11:37 PM EDT
Recruiting No phase listed Observational

Molecular Analysis of Suspected or High-Risk Lung Cancer to Drive Individualized Care

NCT06482073
View directory record Official record
Conditions
Lung Carcinoma, Metastatic Malignant Neoplasm in the Lung
Interventions
Non-Interventional Study
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 19, 2026, 11:37 PM EDT
Not yet recruiting Phase 2 Interventional

Randomized Phase 2 Study Of Epcoritamab Vs Watch And Wait InPatients With Previously Untreated Low Tumor Burden FollicularLymphoma

NCT07783594
View directory record Official record
Conditions
Randomized, Phase 2, Epcoritamab, Watch & Wait, Untreated, Tumor Burden, Follicular Lymphoma
Interventions
Epcoritamab, Observation
Drug · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2030
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 19, 2026, 11:37 PM EDT
Completed Phase 2 Interventional

A Study of Three Anti-HIV Drug Combinations in Patients Who Have Taken Amprenavir

NCT00001095
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Amprenavir, Nevirapine, Lamivudine, Stavudine, Zidovudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1999
U.S. locations
12
States / cities
Los Angeles, California • Denver, Colorado • Miami, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Oct 19, 2026, 11:37 PM EDT
Recruiting No phase listed Observational

Determining the Link Between Dietary Patterns, Fecal Microbiome and Response to Neoadjuvant Chemotherapy

NCT06595160
View directory record Official record
Conditions
Borderline Resectable Pancreatic Ductal Adenocarcinoma, Resectable Pancreatic Ductal Adenocarcinoma, Stage I Pancreatic Cancer AJCC v8
Interventions
Non-Interventional Study
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 1, 2025 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational

The PAWS-COVID-19 (Pediatric AirWay complicationS COVID-19) Registry

NCT04449042
View directory record Official record
Conditions
Airway Management, COVID19
Interventions
airway management during sedation or general anesthesia
Procedure
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Up to 18 Years
Enrollment
14,835 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 22, 2021 · Synced Oct 19, 2026, 11:37 PM EDT
Withdrawn Phase 3 Interventional

Fever and Neutropenia in Pediatric Oncology Patients

NCT03768869
View directory record Official record
Conditions
Fever, Neutropenia
Interventions
Low Risk: Oupatient Management, Low Risk: Inpatient Management, High Risk: Inpatient Management
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
0 Years to 21 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 27, 2021 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational Results available

Vaccine Immune Recovery After Leukemia

NCT05622682
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia, Pediatric
Interventions
Observational only: Serology and flow cytometry for ALL cohort participants, Observational only: Infection rates
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
3 Years to 31 Years
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
6
States / cities
Chicago, Illinois • Grand Rapids, Michigan • Philadelphia, Pennsylvania + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Oct 19, 2026, 11:37 PM EDT
Completed Not applicable Interventional

Bathing Persons With Alzheimer's Disease aT Home (The BATH Study)

NCT00062569
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Bathing Support Intervention (BSI), Caregiver reminiscence with coaching
Behavioral
Lead sponsor
National Institute of Nursing Research (NINR)
NIH
Eligibility
60 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
1
States / cities
Chestnut Hill, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 12, 2009 · Synced Oct 19, 2026, 11:37 PM EDT
Recruiting Not applicable Interventional

Support Through Remote Observation and Nutrition Guidance Program for Individuals With Gastroesophageal Cancer

NCT06497569
View directory record Official record
Conditions
GastroEsophageal Cancer
Interventions
Dietitian Consultation, Survey, Fitbit Data Collection, Referral to Dietitian, Social Determinants of Health Survey (SDOH)
Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
2
States / cities
Tampa, Florida • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational

Loop T2D Observational Study

NCT05951569
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Community-Derived Open-Source Automated Insulin Delivery Loop System
Device
Lead sponsor
Jaeb Center for Health Research
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 12, 2023 · Synced Oct 19, 2026, 11:37 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Rezdiffra Pregnancy and Lactation Registry

NCT07541469
View directory record Official record
Conditions
MASH - Metabolic Dysfunction-Associated Steatohepatitis
Interventions
Rezdiffra
Drug
Lead sponsor
Madrigal Pharmaceuticals, Inc.
Industry
Eligibility
Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
West Conshohocken, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluating the Human Papillomavirus Self-Collection Experience in Individuals Who Have Experienced Sexual Trauma

NCT05458869
View directory record Official record
Conditions
Cervical Carcinoma, Human Papillomavirus Infection
Interventions
HPV Self-Collection, Interview, Survey Administration
Procedure · Other
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
25 Years and older · Female only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Oct 19, 2026, 11:37 PM EDT
Completed No phase listed Observational

An Observational Study to Evaluate The Relationship of Nasal Mucus Properties and Symptoms

NCT01553110
View directory record Official record
Conditions
Acute Rhinosinusitis, Allergic Rhinitis
Interventions
Not listed
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
12 Years to 100 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 25, 2019 · Synced Oct 19, 2026, 11:37 PM EDT
Enrolling by invitation Not applicable Interventional

TruVascular Access - Ultrasound-Guided Vascular Access Study

NCT07798427
View directory record Official record
Conditions
Peripheral Venous Catheterization, Difficult Intravenous Access, Catheterization, Peripheral
Interventions
Ultrasound-Guided Peripheral Vascular Access, Standard Peripheral Vascular Access, Point-of-Care Ultrasound System for Vascular Access Guidance
Procedure · Device
Lead sponsor
Truway Health, Inc.
Industry
Eligibility
12 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Oct 19, 2026, 11:37 PM EDT