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Showing 1–24 of 49 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: b-carotene Clear all
Completed Phase 3 Interventional Results available

Chemotherapy and Radiation Therapy in Treating Young Patients With Newly Diagnosed, Previously Untreated, High-Risk Medulloblastoma/PNET

NCT00392327
View directory record Official record
Conditions
Anaplastic Medulloblastoma, Medulloblastoma
Interventions
Biospecimen Collection, Carboplatin, Cisplatin, Cyclophosphamide, Filgrastim, Isotretinoin, Lumbar Puncture, Magnetic Resonance Imaging, Quality-of-Life Assessment, Radiation Therapy, Vincristine Sulfate
Procedure · Drug · Biological + 2 more
Lead sponsor
Children's Oncology Group
Network
Eligibility
3 Years to 22 Years
Enrollment
379 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2026
U.S. locations
170
States / cities
Birmingham, Alabama • Anchorage, Alaska • Mesa, Arizona + 126 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 2 Interventional

Antioxidant Therapy in Lean and Obese Asthmatics

NCT01317563
View directory record Official record
Conditions
Asthma
Interventions
Vitamins A, E, C & Selenium, Placebo
Dietary Supplement
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
12 Years to 25 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 21, 2016 · Synced Sep 7, 2026, 1:45 PM EDT
Completed No phase listed Observational

Vitamins, Breastmilk HIV Shedding, and Child Health

NCT00197756
View directory record Official record
Conditions
Maternal and Child Health Outcomes
Interventions
Vitamin A alone, Multivitamins excluding vitamin A, multivitamins including vitamin A, Placebo
Dietary Supplement · Other
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years and older · Female only
Enrollment
771 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 20, 2009 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Not applicable Interventional

Effect of Naringenin and Beta Carotene on Energy Expenditure

NCT04697355
View directory record Official record
Conditions
Energy Expenditure, Safety Issues, Glucose Metabolism
Interventions
naringenin and beta carotene
Dietary Supplement
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 70 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Aug 8, 2021 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 2 Interventional Results available

To Immunize Patients With Extensive Stage SCLC Combined With Chemo With or Without All Trans Retinoic Acid

NCT00617409
View directory record Official record
Conditions
Small Cell Lung Cancer
Interventions
Paclitaxel, Drug: Ad.p53-DC vaccines, All -trans Retinoic Acid (ATRA)
Drug · Biological
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2019
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Nov 7, 2019 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 2 Interventional Results available

Ipilimumab and All-Trans Retinoic Acid Combination Treatment of Advanced Melanoma

NCT02403778
View directory record Official record
Conditions
Melanoma
Interventions
VESANOID, Ipilimumab
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 89 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Not applicable Interventional Results available

Glutathione Metabolism in Adolescents With Type 1 Diabetes - Study B

NCT00858273
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Antioxidant supplement, Diabetes treatment, Regular Insulin
Dietary Supplement · Other · Drug
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
12 Years to 21 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 16, 2023 · Synced Sep 7, 2026, 1:45 PM EDT
Terminated Phase 1 Interventional

Revlimid / All-Trans Retinoic Acid (ATRA) / Dexamethasone in Relapsed/Refractory Multiple Myeloma

NCT01985477
View directory record Official record
Conditions
Myeloma
Interventions
Lenalidomide, Dexamethasone, All-Trans Retinoic Acid (ATRA)
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 13, 2016 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study to Examine the Effects of Oral Fenretinide

NCT06528457
View directory record Official record
Conditions
Dengue
Interventions
ISLA101, Dengue 1 Live Virus Human Challenge (DENV-1-LVHC), Placebo
Drug · Other
Lead sponsor
Island Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
East Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Oct 23, 2025 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Micronutrients to Prevent Noise-induced Hearing Loss

NCT00808470
View directory record Official record
Conditions
Noise-Induced Hearing Loss
Interventions
beta-carotene, vitamins C and E, magnesium, Placebo
Drug · Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 35 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated May 18, 2017 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 2 Interventional

Sequential ATRA Then IL-2 for Modulation of Dendritic Cells and Treatment of Metastatic Renal Cell Cancer

NCT00100906
View directory record Official record
Conditions
Kidney Cancer
Interventions
IL-2, ATRA
Drug
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2013
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Aug 15, 2013 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 2 Interventional Results available

Effects of an Antioxidant-Enriched Multivitamin Supplement on Inflammation and Oxidative Stress in Cystic Fibrosis

NCT01859390
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
AquADEKs-2, control multivitamin
Drug · Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
10 Years and older
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
15
States / cities
Tucson, Arizona • Aurora, Colorado • Orlando, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2017 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Novel Metabolites of Beta-Carotene and Lycopene

NCT02550483
View directory record Official record
Conditions
Healthy
Interventions
Base diet + high beta-carotene tomato juice, Base diet + high lycopene tomato juice, Base diet + placebo beverage
Other
Lead sponsor
USDA Beltsville Human Nutrition Research Center
Federal
Eligibility
21 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 1 Interventional

Fenretinide in Treating Patients With Refractory or Relapsed Hematologic Cancer

NCT00104923
View directory record Official record
Conditions
Chronic Myeloproliferative Disorders, Leukemia, Lymphoma, Multiple Myeloma and Plasma Cell Neoplasm
Interventions
fenretinide
Drug
Lead sponsor
California Cancer Consortium
Network
Eligibility
18 Years to 120 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2017
U.S. locations
4
States / cities
Los Angeles, California • Bethesda, Maryland • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 18, 2017 · Synced Sep 7, 2026, 1:45 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

2021 PMT iAge® Intervention Trial by Edifice Health

NCT04983017
View directory record Official record
Conditions
Chronic Inflammation, Inflammaging
Interventions
Dietary supplement, Placebo
Dietary Supplement · Other
Lead sponsor
Edifice Health
Industry
Eligibility
18 Years and older
Enrollment
781 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Greenbrae, California • Suwanee, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Comparison of Carotenoid Bioavailability From Fresh Papaya, Tomato and Carrot

NCT01748916
View directory record Official record
Conditions
Focus of Study: Carotenoid Absorption
Interventions
Papaya, Carrot, Tomato
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 70 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 19, 2025 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 3 Interventional Results available

Comparing Two Different Myeloablation Therapies in Treating Young Patients Who Are Undergoing a Stem Cell Transplant for High-Risk Neuroblastoma

NCT00567567
View directory record Official record
Conditions
Localized Resectable Neuroblastoma, Localized Unresectable Neuroblastoma, Recurrent Neuroblastoma, Regional Neuroblastoma, Stage 4 Neuroblastoma, Stage 4S Neuroblastoma
Interventions
Autologous Hematopoietic Stem Cell Transplantation, Carboplatin, Cisplatin, Cyclophosphamide, Doxorubicin Hydrochloride, Etoposide, External Beam Radiation Therapy, Filgrastim, Isotretinoin, Laboratory Biomarker Analysis, Melphalan, Peripheral Blood Stem Cell Transplantation, Pharmacological Study, Thiotepa, Topotecan Hydrochloride, Vincristine Sulfate Liposome
Procedure · Drug · Radiation + 2 more
Lead sponsor
Children's Oncology Group
Network
Eligibility
Up to 30 Years
Enrollment
665 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2022
U.S. locations
169
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 128 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2022 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Beta-carotene Absorption and Bioconversion to Vitamin A From Biofortified Cassava Gari

NCT02210507
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
Biofortified cassava gari, White cassava gari, White cassava gari + red palm oil
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 45 Years · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jan 11, 2015 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Lipids as Primary Modulators of Carotenoid Absorption in Vegetables

NCT01006174
View directory record Official record
Conditions
Absorption of Carotenoids From Vegetables
Interventions
Soybean Oil, Canola Oil, Butter
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 50 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Sep 7, 2026, 1:45 PM EDT
Recruiting Phase 3 Interventional

Dinutuximab With Chemotherapy, Surgery and Stem Cell Transplantation for the Treatment of Children With Newly Diagnosed High Risk Neuroblastoma

NCT06172296
View directory record Official record
Conditions
Ganglioneuroblastoma, Nodular, Neuroblastoma
Interventions
Biospecimen Collection, Bone Marrow Aspiration, Bone Marrow Biopsy, Carboplatin, Cisplatin, Computed Tomography, Cyclophosphamide, Dinutuximab, Doxorubicin, Echocardiography Test, Etoposide, FDG-Positron Emission Tomography and Computed Tomography Scan, Hematopoietic Cell Transplantation, Irinotecan, Isotretinoin, Leukapheresis, Magnetic Resonance Imaging, Melphalan, Multigated Acquisition Scan, Radiation Therapy, Radionuclide Imaging, Survey Administration, Temozolomide, Thiotepa, Topotecan, Tumor Resection, Vincristine
Procedure · Drug · Biological + 2 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Up to 30 Years
Enrollment
478 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
157
States / cities
Birmingham, Alabama • Mobile, Alabama • Mesa, Arizona + 127 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Vitamin A Absorption From Cassava in Women

NCT01381276
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
Beta-Carotene bio-fortified cassava porridge without oil, Beta-Carotene bio-fortified cassava porridge with oil, White cassava porridge with retinyl palmitate reference dose
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 45 Years · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2011 · Synced Sep 7, 2026, 1:45 PM EDT
Withdrawn Phase 2 Interventional

The Role of Antioxidant Supplementation in Keratoconus Patients

NCT02827747
View directory record Official record
Conditions
Keratoconus
Interventions
Antioxidants (Vitamins A,C,E) plus GSH, Placebo, Centrum, Dietary Sources
Other · Dietary Supplement · Combination Product
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 45 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Palm Beach Gardens, Florida
Source: ClinicalTrials.gov public record
Updated Aug 15, 2021 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Randomized Controlled Trial Testing The Effect Of A Multi-Nutrient Fortified Juice

NCT01909063
View directory record Official record
Conditions
Vitamin D Deficiency, Hypovitaminosis A, Vitamin E Deficiency
Interventions
Vitamin D, Vitamin D, Vitamin E, and Vitamin A, Control, 700 mg Calcium
Dietary Supplement
Lead sponsor
Boston University
Other
Eligibility
6 Years to 10 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 27, 2017 · Synced Sep 7, 2026, 1:45 PM EDT
Completed Phase 1 Interventional

Low Antioxidant Diet in Controlling Cachexia in Patients With Oropharyngeal Cancer Receiving Chemotherapy and Radiation Therapy

NCT00486304
View directory record Official record
Conditions
Cachexia, Head and Neck Cancer, Weight Changes
Interventions
ADD, Placebo
Other
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 17, 2012 · Synced Sep 7, 2026, 1:45 PM EDT