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ClinicalTrials.gov public records Last synced Oct 19, 2026, 12:35 AM EDT

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Showing 1–24 of 373 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: carotenoids Clear all
Completed Not applicable Interventional

The Effects of Lutein and Zeaxanthin Supplementation on Vision in Patients With Albinism

NCT02200263
View directory record Official record
Conditions
Ocular Albinism (OA), Oculocutaneous Albinism (OCA)
Interventions
Lutein plus Zeaxanthin, Placebo
Dietary Supplement
Lead sponsor
Johns Hopkins University
Other
Eligibility
12 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 28, 2018 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Substudy 02C: Safety and Efficacy of Pembrolizumab in Combination With Investigational Agents or Pembrolizumab Alone in Participants With Stage III Melanoma Who Are Candidates for Neoadjuvant Therapy (MK-3475-02C/KEYMAKER-U02)

NCT04303169
View directory record Official record
Conditions
Melanoma
Interventions
Pembrolizumab, Vibostolimab, Gebasaxturev, MK-4830, Favezelimab + Pembrolizumab, ATRA
Biological · Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 120 Years
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
11
States / cities
Los Angeles, California • Santa Monica, California • Aurora, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 1 Interventional Results available

Induction Therapy Including 131 I-MIBG and Chemotherapy in Treating Patients With Newly Diagnosed High-Risk Neuroblastoma Undergoing Stem Cell Transplant, Radiation Therapy, and Maintenance Therapy With Isotretinoin

NCT01175356
View directory record Official record
Conditions
Ganglioneuroblastoma, Localized Resectable Neuroblastoma, Localized Unresectable Neuroblastoma, Regional Neuroblastoma, Stage 4 Neuroblastoma, Stage 4S Neuroblastoma
Interventions
3-Dimensional Conformal Radiation Therapy, Autologous Hematopoietic Stem Cell Transplantation, Busulfan, Cisplatin, Cyclophosphamide, Doxorubicin Hydrochloride, Etoposide Phosphate, External Beam Radiation Therapy, In Vitro-Treated Peripheral Blood Stem Cell Transplantation, Intensity-Modulated Radiation Therapy, Iobenguane I-131, Isotretinoin, Laboratory Biomarker Analysis, Melphalan, Pharmacological Study, Questionnaire Administration, Therapeutic Conventional Surgery, Topotecan Hydrochloride, Vincristine Sulfate
Radiation · Procedure · Drug + 1 more
Lead sponsor
Children's Oncology Group
Network
Eligibility
1 Year to 30 Years
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2025
U.S. locations
25
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 20 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2026 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Using Reinforcement Schedules to Increase Fruit&Vegetable Intake, Reduce Waste, and Increase School Lunch Participation

NCT05633251
View directory record Official record
Conditions
Behavioral Changes, Psychology, Social, Nutrition
Interventions
Variable (random) interval, Variable (non-random) interval, Variable (random) interval with table tents, Control
Behavioral
Lead sponsor
New Mexico State University
Other
Eligibility
11 Years to 16 Years
Enrollment
1,626 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Dec 1, 2022 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Not applicable Interventional Results available

Trial of Glutamine and Antioxidant Supplementation in Critically Ill Patients

NCT00133978
View directory record Official record
Conditions
Critical Illness, Sepsis, Multiple Organ Failure
Interventions
Glutamine, Antioxidants, Glutamine + Antioxidants, Placebo
Other
Lead sponsor
Daren K. Heyland
Other
Eligibility
18 Years and older
Enrollment
1,223 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
5
States / cities
Aurora, Colorado • Louisville, Kentucky • Dayton, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2021 · Synced Oct 19, 2026, 12:35 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Yellow Potatoes and Carotenoids

NCT07606001
View directory record Official record
Conditions
Carotenoids
Interventions
Yellow-flesh potatoes, White-flesh potatoes
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 1 Interventional

Fenretinide in Treating Patients With Metastatic or Unresectable Malignant Solid Tumors

NCT00387504
View directory record Official record
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
fenretinide, pharmacological study
Drug · Other
Lead sponsor
California Cancer Consortium
Network
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
7
States / cities
Duarte, California • Los Angeles, California • Martinez, California + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 12, 2013 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 2Phase 3 Interventional

Evaluation of Tretinoin Cream on the Integrity of Aged Forearm Skin

NCT07084116
View directory record Official record
Conditions
Skin Tear, Solar Purpura, Dermatoporosis
Interventions
Tretinoin 0.1% cream, Bland cream (non-drug)
Drug
Lead sponsor
James Thomas Pathoulas
Other
Eligibility
55 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 1Phase 2 Interventional

Combination Chemotherapy Followed By Peripheral Stem Cell Transplantation or Isotretinoin in Treating Patients With Acute Myeloid Leukemia, Myelodysplastic Syndrome, or Acute Lymphocytic Leukemia

NCT00003619
View directory record Official record
Conditions
Chronic Myeloproliferative Disorders, Leukemia, Myelodysplastic Syndromes, Thrombocytopenia
Interventions
filgrastim, vitamin E, busulfan, cytarabine, etoposide, fludarabine phosphate, isotretinoin, topotecan hydrochloride, bone marrow ablation with stem cell support, peripheral blood stem cell transplantation
Biological · Dietary Supplement · Drug + 1 more
Lead sponsor
Drexel University College of Medicine
Other
Eligibility
19 Years to 90 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2004
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 26, 2013 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 2 Interventional Results available

Comparison of Retinol 1.0% and Tretinoin 0.02% in the Treatment of Moderate to Severe Photodamage and Wrinkles

NCT01283464
View directory record Official record
Conditions
Photodamaged Skin, Wrinkles
Interventions
Retinol, Tretinoin
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
35 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 4, 2016 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

A Study Comparing Tretinoin Gel Microsphere, 0.1% and RETIN-A MICRO ® Gel Microsphere, 0.1% in the Treatment of Acne Vulgaris

NCT04883736
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Tretinoin Gel Microsphere, 0.1%, RETIN-A MICRO® (Tretinoin) Gel Microsphere, 0.1%, Placebo Control
Drug
Lead sponsor
Sun Pharmaceutical Industries, Inc.
Industry
Eligibility
12 Years to 40 Years
Enrollment
973 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated May 12, 2021 · Synced Oct 19, 2026, 12:35 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Produce Prescriptions and Veggie Meter Scores for College Food Security

NCT07511699
View directory record Official record
Conditions
Food Insecurity, Carotenoid Status, Produce Prescription
Interventions
Produce boxes
Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Vitamin A Equivalence of Plant Carotenoids in Children

NCT00680212
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
dietary carotenoids, spinach, rice, and synthetic beta-carotene
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
6 Years to 8 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 18, 2009 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 2 Interventional Results available

Dinutuximab, Sargramostim, and Combination Chemotherapy in Treating Patients With Newly Diagnosed High-Risk Neuroblastoma

NCT03786783
View directory record Official record
Conditions
Ganglioneuroblastoma, High Risk Neuroblastoma
Interventions
Autologous Hematopoietic Stem Cell Transplantation, Carboplatin, Cisplatin, Cyclophosphamide, Dexrazoxane, Dinutuximab, Doxorubicin, Etoposide, External Beam Radiation Therapy, Isotretinoin, Melphalan, Sargramostim, Thiotepa, Topotecan, Vincristine
Procedure · Drug · Biological + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Up to 30 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
7
States / cities
Los Angeles, California • Washington D.C., District of Columbia • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Oct 19, 2026, 12:35 AM EDT
Not listed Phase 2 Interventional

Bexarotene, Tretinoin, and Combination Chemotherapy in Treating Patients With Stage III or Stage IV Non-Small Cell Lung Cancer

NCT00514293
View directory record Official record
Conditions
Lung Cancer
Interventions
bexarotene, capecitabine, carboplatin, cisplatin, docetaxel, tretinoin
Drug
Lead sponsor
Raghu Nandan, M.D., Inc
Other
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
1
States / cities
Lakewood, California
Source: ClinicalTrials.gov public record
Updated Jan 10, 2014 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 3 Interventional Results available

Clinical Trial of Lutein for Patients With Retinitis Pigmentosa Receiving Vitamin A

NCT00346333
View directory record Official record
Conditions
Retinitis Pigmentosa
Interventions
Lutein, Cornstarch control
Drug · Dietary Supplement
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
18 Years to 60 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 31, 2014 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Clinical Evaluation of the Photoallergy Potential of Atralin Gel

NCT00603772
View directory record Official record
Conditions
Healthy
Interventions
Atralin (tretinoin) gel, 0.05%
Drug
Lead sponsor
Coria Laboratories, Ltd.
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated May 6, 2008 · Synced Oct 19, 2026, 12:35 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Healthy Term Infants Fed Milk-Based Formulas

NCT02069522
View directory record Official record
Conditions
Infants
Interventions
Standard Milk-based Formula Containing Carotenoid, Investigational Milk-based Formula Containing Carotenoid
Other
Lead sponsor
Abbott Nutrition
Industry
Eligibility
14 Days to 28 Days
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
6
States / cities
Tuscon, Arizona • Indianapolis, Indiana • Lincoln, Nebraska + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 24, 2015 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Not applicable Interventional

Vitamin A Replacement in Patients Undergoing HSCT and Its Role on MBI-LCBI Rates

NCT03039257
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplant
Interventions
Vitamin A
Dietary Supplement
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
1 Year and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 30, 2018 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Determine the Phototoxity of Atralin (Tretinoin) Gel, 0.05%

NCT00604032
View directory record Official record
Conditions
Healthy
Interventions
Atralin (tretinoin) Gel, 0.05%
Drug
Lead sponsor
Coria Laboratories, Ltd.
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 28, 2008 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 3 Interventional Results available

S0521, Combination Chemotherapy With or Without Gemtuzumab Followed By Tretinoin, Mercaptopurine, and Methotrexate or Observation in Treating Patients With Acute Promyelocytic Leukemia

NCT00492856
View directory record Official record
Conditions
Leukemia
Interventions
mercaptopurine, methotrexate, tretinoin
Drug
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years to 120 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2016
U.S. locations
210
States / cities
Scottsdale, Arizona • Roseville, California • Sacramento, California + 135 more
Source: ClinicalTrials.gov public record
Updated Jan 10, 2023 · Synced Oct 19, 2026, 12:35 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Evaluation of Irritation That Potentially Could be Caused by Two Facial Gels Applied to Opposite Sides of the Face

NCT00952523
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Tretinoin Facial Gel, Adapalene/Benzoyl Peroxide Facial Gel
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
162 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Broomall, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 15, 2012 · Synced Oct 19, 2026, 12:35 AM 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 19, 2024 · Synced Oct 19, 2026, 12:35 AM EDT
Withdrawn Phase 4 Interventional

Study of Acitretin to Treat Skin Rash Caused by Erlotinib (a Chemotherapy Drug)

NCT01299220
View directory record Official record
Conditions
Skin Rash
Interventions
Acitretin
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Oct 19, 2026, 12:35 AM EDT