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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Fluid collection Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Manipulating E-Cigarette Nicotine to Promote Public Health

NCT06448351
View directory record Official record
Conditions
Tobacco-Related Carcinoma
Interventions
Biospecimen Collection, Carbon Monoxide Measurement, Vaping session, Survey Administration
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 65 Years
Enrollment
375 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed No phase listed Observational

Circulating Tumor DNA in Cerebrospinal Fluid as an Early Biomarker of Leptomeningeal Metastasis (LM)

NCT02071056
View directory record Official record
Conditions
Leptomeningeal Metastasis
Interventions
Not listed
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Aug 17, 2020 · Synced Sep 22, 2026, 2:00 AM EDT
Active, not recruiting No phase listed Observational

National Cancer Institute "Cancer Moonshot Biobank"

NCT04314401
View directory record Official record
Conditions
Acute Myeloid Leukemia, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Clinical Stage IV Esophageal Adenocarcinoma AJCC v8, Clinical Stage IV Gastric Cancer AJCC v8, Clinical Stage IV Gastroesophageal Junction Adenocarcinoma AJCC v8, Esophageal Carcinoma, Fallopian Tube Carcinoma, Gastric Carcinoma, Hormone Receptor-Positive Breast Carcinoma, Invasive Breast Carcinoma, Lung Non-Small Cell Carcinoma, Lung Small Cell Carcinoma, Malignant Solid Neoplasm, Melanoma, Metastatic Prostate Carcinoma, Multiple Myeloma, Ovarian Carcinoma, Ovarian High Grade Serous Adenocarcinoma, Primary Peritoneal Carcinoma, Stage III Fallopian Tube Cancer AJCC v8, Stage III Lung Cancer AJCC v8, Stage III Ovarian Cancer AJCC v8, Stage IV Colorectal Cancer AJCC v8, Stage IV Fallopian Tube Cancer AJCC v8, Stage IV Lung Cancer AJCC v8, Stage IV Ovarian Cancer AJCC v8, Stage IVB Prostate Cancer AJCC v8, Triple-Negative Breast Carcinoma
Interventions
Biospecimen Collection, Computed Tomography, Magnetic Resonance Imaging, Medical Chart Review, Paracentesis, Positron Emission Tomography
Procedure · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
13 Years and older
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
147
States / cities
Daphne, Alabama • Fairhope, Alabama • Mobile, Alabama + 115 more
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed No phase listed Observational

Predicting Disease Progression and/or Recurrence in Cancer

NCT04776837
View directory record Official record
Conditions
Patient Reported Outcome Measures, Colorectal Cancer, Pancreatic Cancer, Biliary Tract Cancer, Esophageal Cancer, Metastatic Cancer, Disease Progression, Survival Analysis
Interventions
Observational Cohort
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pilocarpine Microneedles for Sweat Induction (PMN-SI)

NCT04732195
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Pilocarpine microneedle patch, Pilocarpine Iontophoresis
Device
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated May 21, 2023 · Synced Sep 22, 2026, 2:00 AM EDT
Active, not recruiting Not applicable Interventional

Liquid Biopsy in Ewing Sarcoma and Osteosarcoma as a Prognostic And Response Diagnostic: LEOPARD

NCT06068075
View directory record Official record
Conditions
Ewing Sarcoma, Ewing Sarcoma of Bone, Ewing Sarcoma of Soft Tissue, Peripheral Primitive Neuroectodermal Tumor, Peripheral Primitive Neuroectodermal Tumor of Bone, Peripheral Primitive Neuroectodermal Tumor of Soft Tissue, High-grade Osteosarcoma
Interventions
FoundationOne Liquid CDx
Other
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
12 Months to 50 Years
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
15
States / cities
Los Angeles, California • Atlanta, Georgia • Boston, Massachusetts + 9 more
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Terminated Phase 2 Interventional Results available

Study of Valproic Acid (VPA) vs Placebo to Shorten Time of Indwelling Pleural Catheter

NCT01900730
View directory record Official record
Conditions
Breast Cancer
Interventions
Placebo, Valproic Acid (VPA), Questionnaires, Pill Diary, Drainage Diary
Drug · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 24, 2020 · Synced Sep 22, 2026, 2:00 AM EDT
Terminated Phase 1 Interventional

FMT for MDRO Colonization After Infection in Renal Transplant Recipients

NCT02922816
View directory record Official record
Conditions
Infection Due to Resistant Organism
Interventions
Fecal Microbiota Transplant (FMT), Bowel preparation, Stool or perirectal swab sampling, Fasting
Biological · Procedure · Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 14, 2023 · Synced Sep 22, 2026, 2:00 AM EDT
Not yet recruiting Early Phase 1 Interventional Accepts healthy volunteers

Evaluating the Delivery and Effects of THC Vaping Liquids in the Bloodstream

NCT06334016
View directory record Official record
Conditions
Cannabis Dependence
Interventions
Biospecimen Collection, Cannabis sativa Extract, Nicotine, Placebo Administration, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sympathetic Activation in Obesity

NCT04946552
View directory record Official record
Conditions
Obesity, Healthy
Interventions
PET Scan, Mixed Meal Test, Muscle sympathetic nerve activity (MSNA), Oral Glucose Tolerance Test, Body Composition, Percent Body Fat & Percent Body Water (Tanita scale), CT Scan, Body Composition, Percent Body Fat & Percent Body Water (DXA Scan)
Diagnostic Test · Dietary Supplement · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 45 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 15, 2024 · Synced Sep 22, 2026, 2:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Modulating Glucose Tolerance With Dietary Tyrosine

NCT03872557
View directory record Official record
Conditions
Glucose Tolerance
Interventions
Tyrosine (TYR) Supplementation
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 4, 2021 · Synced Sep 22, 2026, 2:00 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

GSK1349572 Exposure in Blood, Seminal Fluid, and Rectal Fluid and Tissue in Healthy Male Subjects

NCT01459315
View directory record Official record
Conditions
Healthy
Interventions
dolutegravir
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 49 Years · Male only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 3, 2013 · Synced Sep 22, 2026, 2:00 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Validation of Biomarkers in Amyotrophic Lateral Sclerosis (ALS)

NCT00677768
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis, Lou Gehrig's Disease, Primary Lateral Sclerosis, Nervous System Diseases, Hereditary Spastic Paraparesis
Interventions
No intervention
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
30 Years to 80 Years
Enrollment
475 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2015
U.S. locations
29
States / cities
Phoenix, Arizona • Orange, California • Jacksonville, Florida + 24 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2016 · Synced Sep 22, 2026, 2:00 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Study to Understand Novel Biomarkers in Researching Dementia

NCT06547099
View directory record Official record
Conditions
Alzheimer Disease, Mild Cognitive Impairment, Dementia
Interventions
Clinical tau PET, Clinical amyloid test, Research blood collection, Cognitive assessments
Diagnostic Test · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
60 Years and older
Enrollment
1,800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Pharmacokinetics, Pharmacodynamics, and Safety Profile of Understudied Drugs Administered to Children Per Standard of Care (POPS)

NCT04278404
View directory record Official record
Conditions
Coronavirus Infection (COVID-19), Pulmonary Arterial Hypertension, Urinary Tract Infections in Children, Hypertension, Pain, Hyperphosphatemia, Primary Hyperaldosteronism, Edema, Hypokalemia, Heart Failure, Hemophilia, Menorrhagia, Insomnia, Pneumonia, Skin Infection, Arrythmia, Asthma in Children, Bronchopulmonary Dysplasia, Adrenal Insufficiency, Fibrinolysis; Hemorrhage, Attention Deficit Hyperactivity Disorder, Multisystem Inflammatory Syndrome in Children (MIS-C), Kawasaki Disease, Coagulation Disorder, Down Syndrome
Interventions
The POP02 study is collecting bodily fluid samples (i.e., whole blood, effluent samples) of children prescribed the following drugs of interest per standard of care:
Drug
Lead sponsor
Duke University
Other
Eligibility
0 Years to 20 Years
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
49
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 40 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed No phase listed Observational

Evaluating Dactinomycin and Vincristine in Young Patients With Cancer

NCT00674193
View directory record Official record
Conditions
Childhood Acute Lymphoblastic Leukemia, Childhood Rhabdomyosarcoma, Childhood Soft Tissue Sarcoma, Ewing Sarcoma, Ewing Sarcoma of Bone, Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor (PNET), Unspecified Childhood Solid Tumor, Protocol Specific, Wilms Tumor and Other Childhood Kidney Tumors
Interventions
pharmacological study, laboratory biomarker analysis
Other
Lead sponsor
Children's Oncology Group
Network
Eligibility
Up to 16 Years
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
36
States / cities
Birmingham, Alabama • Long Beach, California • Los Angeles, California + 31 more
Source: ClinicalTrials.gov public record
Updated May 16, 2017 · Synced Sep 22, 2026, 2:00 AM EDT
Recruiting No phase listed Observational

SIBYL: obServation of Therapy Response With lIquid BiopsY evaLuation

NCT05935384
View directory record Official record
Conditions
Non-small Cell Lung Cancer, Colorectal Cancer, Breast Cancer
Interventions
Guardant360
Diagnostic Test
Lead sponsor
Guardant Health, Inc.
Industry
Eligibility
18 Years and older
Enrollment
470 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
1
States / cities
Skokie, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed Phase 2Phase 3 Interventional Results available

TBI Dose De-escalation for Fanconi Anemia

NCT00352976
View directory record Official record
Conditions
Fanconi Anemia
Interventions
Cyclophosphamide, Fludarabine, Total Body Irradiation, Bone Marrow Transplantation, Mycophenolate Mofetil, Sirolimus
Drug · Procedure
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
Not listed
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2020
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 23, 2021 · Synced Sep 22, 2026, 2:00 AM EDT
Recruiting Not applicable Interventional

Gut Microbiome and Sex as Risk Factors for Kidney Stones After Bariatric Surgery

NCT04590690
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Special diet
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 130 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed No phase listed Observational

Determinants of Age-Related Treatment Effectiveness in Ovarian Cancer

NCT02973750
View directory record Official record
Conditions
Ovarian Cancer, Fallopian Tube Cancer, Peritoneal Cancer, Ovarian Diseases, Fallopian Tube Diseases, Peritoneal Diseases
Interventions
Baseline Biopsy, Tissue Collection, Blood Draws
Procedure
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Sep 22, 2026, 2:00 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

InAdvance: Surveillance, Prevention, and Interception in a Population at Risk for Cancer

NCT05463796
View directory record Official record
Conditions
Cancer Risk, Cancer Predisposition Syndrome, Hereditary Cancer Prediction, Childhood Cancer Survivors, Adult Cancer Survivors, IARC Carcinogens, Smoking History, Lung Cancer, Ductal/Lobular Carcinoma, Barrett Esophagus, Pancreatic Precursor Lesions, Colonic Dysplasia/Adenomata, Non-Alcoholic Fatty Liver Disease, Non Alcoholic Steatohepatitis, Cirrhosis, High Grade Prostatic Epithelial Neoplasia, High-grade Bladder Urothelial Dysplasia/Carcinoma in Situ, Adenomatous Hyperplasia, High-risk Oral Precancerous Diseases, Melanocytic Lesion, Adult, Hematologic Malignancy, Lung; Node, Serous Tubal Intraepithelial Carcinoma, Endometrial Intraepithelial Neoplasia, Cervical and Endocervical Carcinoma in Situ, Vulvar Intraepithelial Neoplasia, Nephrogenic Rests, Benign Bone Lesions With Risk of Malignant Degeneration, Giant Cell Tumor, Osteochondroma, Spitz Nevus
Interventions
Samples
Other
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
Not listed
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2031
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Mechanisms of Hypoglycemia in Patients Without Diabetes

NCT04428723
View directory record Official record
Conditions
Hypoglycemia
Interventions
Entry of demographic and medical history data into a deidentified database, Blood sample for DNA analysis, Stool sample for microbiome analysis, Mixed meal tolerance test, Continuous glucose monitoring, activity monitor
Other · Genetic · Diagnostic Test
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
18 Years to 70 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metronidazole SC Penetrance With Moisturizers

NCT06434519
View directory record Official record
Conditions
Rosacea, Erythematotelangiectatic
Interventions
Metronidazole cream, Cetaphil moisturizer, CeraVe moisturizer, Eucerin Healing Lotion moisturizer, Aveeno Calm and Restore Oat Gel moisturizer
Drug · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 29, 2026 · Synced Sep 22, 2026, 2:00 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cerebrospinal Fluid (CSF) Biomarkers Alzheimer's Disease (AD) and Non-AD Dementias

NCT01730430
View directory record Official record
Conditions
Alzheimer's Disease, Dementias
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
55 Years to 85 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 21, 2014 · Synced Sep 22, 2026, 2:00 AM EDT