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ClinicalTrials.gov public records Last synced Oct 21, 2026, 7:52 PM EDT

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Showing 1–24 of 1,048 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Immunity Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

RCT of Mushroom Based Natural Product to Enhance Immune Response to COVID-19 Vaccination

NCT04951336
View directory record Official record
Conditions
COVID-19 Vaccination
Interventions
FoTv
Dietary Supplement
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2025 · Synced Oct 21, 2026, 7:52 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Retail COVID-19 Study

NCT06761612
View directory record Official record
Conditions
COVID - 19
Interventions
FDA approved mRNA vaccines
Biological
Lead sponsor
Biomedical Advanced Research and Development Authority
Federal
Eligibility
3 Years and older
Enrollment
2,519 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
20
States / cities
Kissimmee, Florida • Chicago, Illinois • Oak Park, Illinois + 15 more
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 2 Interventional

Glutamine Supplementation in Cystic Fibrosis

NCT01051999
View directory record Official record
Conditions
Cystic Fibrosis, Immune Function
Interventions
Glutamine, L-alanine
Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 14, 2015 · Synced Oct 21, 2026, 7:52 PM EDT
Recruiting Phase 1 Interventional

Evaluation of Circulating Immune Response After Histosonics in Colorectal Cancer (ECHO-CRC)

NCT07361107
View directory record Official record
Conditions
Colorectal (Colon or Rectal) Cancer
Interventions
Histotripsy
Procedure
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 21, 2026, 7:52 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Acute Respiratory Infection Consortium

NCT01021098
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
17 Years to 55 Years
Enrollment
2,018 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2023
U.S. locations
5
States / cities
San Diego, California • Bethesda, Maryland • San Antonio, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2023 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Human Lung Responses to Respiratory Pathogens

NCT01967628
View directory record Official record
Conditions
Respiratory Infection
Interventions
Vitamin D3 (cholecalciferol), Placebo Sugar Pill
Dietary Supplement
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 60 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 29, 2018 · Synced Oct 21, 2026, 7:52 PM EDT
Active, not recruiting Phase 1 Interventional

Sipuleucel-T Based Autologous Cellular Immunotherapy for Advanced Prostate Cancer

NCT05806814
View directory record Official record
Conditions
Metastatic Castration-Resistant Prostate Cancer (mCRPC)
Interventions
Sipuleucel-T
Biological
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older · Male only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 1 Interventional

Vaccine for Prevention of Bird Flu

NCT00776711
View directory record Official record
Conditions
Influenza, Human
Interventions
Monovalent Influenza Subunit Virion (H5N1) Vaccine, A/Indonesia/05/2005, VRC-AViDNA036-00-VP
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 21, 2026, 7:52 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Woodsmoke Exposure, Influenza Infection, and Nasal Immunity

NCT06841913
View directory record Official record
Conditions
Smoke Exposure, Influenza
Interventions
LAIV nasal vaccine is chosen as a model viral infection, Wood smoke, Placebo for LAIV nasal vaccine is chosen as a model viral infection, Placebo for Wood Smoke (clean Air Exposure)
Biological · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 49 Years
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Oct 21, 2026, 7:52 PM EDT
Completed No phase listed Observational

Periodontal Treatment Response in Type II Diabetic Patients

NCT01881074
View directory record Official record
Conditions
Type II Diabetes, Periodontal Disease
Interventions
Triclosan containing toothpaste, Non-triclosan containing toothpaste
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 17, 2018 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

VRC 309: A Multi-Center, Open-Label, Randomized Phase I Study of an Investigational Influenza DNA Vaccine Followed by 2009/2010 Seasonal Influenza Trivalent Inactivated Vaccine (TIV) Compared to Two Injections of TIV in Adults 45-70 Years

NCT00995982
View directory record Official record
Conditions
Influenza, Human
Interventions
VRC-FLUDNA056-00VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
45 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
2
States / cities
Bethesda, Maryland • Annandale, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 21, 2026, 7:52 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Immune Responses to Gluten

NCT05209568
View directory record Official record
Conditions
Celiac Disease, Malabsorption Syndromes, Digestive System Disease, Intestinal Disease, Gastrointestinal Diseases, Gluten Sensitivity, Celiac Disease in Children
Interventions
Gluten Powder
Dietary Supplement
Lead sponsor
Boston Children's Hospital
Other
Eligibility
2 Years to 101 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2029
U.S. locations
2
States / cities
Aurora, Colorado • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 21, 2026, 7:52 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

The Altered Immune Response to Exercise in Patients With Fibromyalgia Before and After a Mind-body Intervention

NCT03441997
View directory record Official record
Conditions
Fibromyalgia
Interventions
Mind-body exercise, Light mobility exercises
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 4, 2019 · Synced Oct 21, 2026, 7:52 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

CMV-MVA Triplex Vaccination in HLA-Matched Related Stem Cell Donors for the Prevention of CMV Infection in Patients Undergoing Hematopoietic Stem Cell Transplant

NCT06059391
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia, Chronic Lymphocytic Leukemia, Chronic Myeloid Leukemia, BCR-ABL1 Positive, Hematopoietic and Lymphoid System Neoplasm, Hodgkin Lymphoma, Myelodysplastic Syndrome, Myelofibrosis, Myeloproliferative Neoplasm, Non-Hodgkin Lymphoma
Interventions
Allogeneic Hematopoietic Stem Cell Transplantation, Biospecimen Collection, Granulocyte Colony-Stimulating Factor, Hematopoietic Cell Transplantation Conditioning Regimen, Multi-peptide CMV-Modified Vaccinia Ankara Vaccine, Pheresis, Placebo Administration, Stem Cell Mobilization Therapy
Procedure · Drug · Biological
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
216 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
3
States / cities
Duarte, California • Atlanta, Georgia • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 2 Interventional Results available

QUILT-3.006 for Recurrent Medullary Thyroid Cancer

NCT01856920
View directory record Official record
Conditions
Medullary Thyroid Cancer (MTC)
Interventions
GI-6207 [Recombinant Saccharomyces cerevisiae-CEA (610D)]
Biological
Lead sponsor
NantCell, Inc.
Industry
Eligibility
18 Years to 100 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 9, 2024 · Synced Oct 21, 2026, 7:52 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Characterizing SARS-CoV-2-specific Immunity in Individuals Who Have Recovered From COVID-19

NCT04403880
View directory record Official record
Conditions
SARS-CoV-2, COVID-19
Interventions
Sample collection
Other
Lead sponsor
HIV Vaccine Trials Network
Network
Eligibility
18 Years and older
Enrollment
760 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
21
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Immune Response After a Booster Dose of a Quadrivalent Meningococcal (MenACYW) Conjugate Vaccine When Administered Alone or Concomitantly With a Licensed Meningococcal Serogroup B Vaccine, in Participants Who Received Primary Quadrivalent Meningococcal Conjugate Vaccine (MCV4)

NCT04084769
View directory record Official record
Conditions
Meningococcal Immunisation (Healthy Volunteers)
Interventions
Meningococcal polysaccharide (serogroups A, C, Y, and W) tetanus toxoid Conjugate vaccine MenACYW Conjugate vaccine, Meningococcal Group B vaccine (Trumenba®), Meningococcal group B vaccine (Bexsero®)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
13 Years to 26 Years
Enrollment
570 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
29
States / cities
Birmingham, Alabama • San Diego, California • Bardstown, Kentucky + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 21, 2026, 7:52 PM EDT
Completed No phase listed Observational

Leukapheresis for Research on HCV-Coinfected Patients

NCT00076427
View directory record Official record
Conditions
Hepatitis C, HIV Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
327 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2015
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 6, 2017 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess Immune Response to Multiple Doses of PF-06881894 or US-Approved Neulasta in Healthy Volunteers

NCT03273842
View directory record Official record
Conditions
Healthy Volunteers
Interventions
PF-06881894, US-approved Neulasta
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 65 Years
Enrollment
422 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
4
States / cities
Coral Gables, Florida • Jacksonville, Florida • Miami, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2018 · Synced Oct 21, 2026, 7:52 PM EDT
Completed No phase listed Observational

Investigating Immune Escape by SARS-CoV-2 Variants

NCT05171803
View directory record Official record
Conditions
COVID-19; Immunity
Interventions
No intervention
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 100 Years
Enrollment
38 participants
Timeline
2021 – 2023
U.S. locations
1
States / cities
San Dimas, California
Source: ClinicalTrials.gov public record
Updated Nov 8, 2023 · Synced Oct 21, 2026, 7:52 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Studies of the Immune Response in Normal Subjects and Patients With Disorders of the Immune System

NCT00001158
View directory record Official record
Conditions
Immunologic Deficiency Syndromes, Neoplasms
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Healthy volunteers
Accepts healthy volunteers
Timeline
1977 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 5, 2008 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Role of Vitamin D in Female Reproductive Tract Immunity

NCT02186535
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D and Calcium
Dietary Supplement
Lead sponsor
CONRAD
Other
Eligibility
21 Years to 50 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 8, 2016 · Synced Oct 21, 2026, 7:52 PM EDT
Withdrawn Phase 3 Interventional Accepts healthy volunteers

A Study of Safety, Reactogenicity and Immune Response of the Repeat Vaccination Against RSV When Given to Female Participants of 18-49 Years of Age During Their Subsequent Uncomplicated Pregnancy

NCT05229068
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
RSV MAT
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 49 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
2
States / cities
Missoula, Montana • Norfolk, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 7, 2022 · Synced Oct 21, 2026, 7:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Inflammation and the Host Response to Injury (In Healthy Volunteers)

NCT00820989
View directory record Official record
Conditions
Immune System
Interventions
Endotoxin, Lipopolysaccharide, LPS
Biological
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 40 Years
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2011
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated May 21, 2014 · Synced Oct 21, 2026, 7:52 PM EDT