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ClinicalTrials.gov public records Last synced Oct 4, 2026, 2:14 PM EDT

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Showing 73–96 of 180 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Vitamin A palmitate Clear all
Completed Early Phase 1 Interventional Accepts healthy volunteers

De Novo Lipogenesis of Sebaceous Glands in Acne

NCT02620813
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Tretinoin, Isotretinoin
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
15 Years to 45 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
2
States / cities
Davis, California • Sacramento, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2021 · Synced Oct 4, 2026, 2:14 PM EDT
Completed Phase 2 Interventional

Chemotherapy Plus Monoclonal Antibody in Treating Patients With Acute Promyelocytic Leukemia

NCT00016159
View directory record Official record
Conditions
Leukemia
Interventions
filgrastim, lintuzumab, arsenic trioxide, idarubicin, tretinoin
Biological · Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
Not listed
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2000
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Oct 4, 2026, 2:14 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 12, 2015 · Synced Oct 4, 2026, 2:14 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

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

NCT00714714
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Adapalene Gel, Tretinoin Gel
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Broomall, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 15, 2012 · Synced Oct 4, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional Results available

An Efficacy Trial of Low Dose All-trans Retinoic Acid in Patients With Primary Sclerosing Cholangitis

NCT03359174
View directory record Official record
Conditions
Cholangitis, Sclerosing
Interventions
All-trans retinoic acid
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 80 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 9, 2021 · Synced Oct 4, 2026, 2:14 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of EED on Zn Absorption and Retention in Children From a Standard Dose

NCT02760095
View directory record Official record
Conditions
Environmental Enteric Dysfunction, Zinc Deficiency, Vitamin A Deficiency
Interventions
3 mg zinc sulfate supplement, 0.5 mg of 13C10-retinyl-acetate
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Months to 24 Months
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 1, 2019 · Synced Oct 4, 2026, 2:14 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Trial of Antibody Responses by Vitamin Supplementation

NCT03859687
View directory record Official record
Conditions
Healthy Participants
Interventions
Vitamin A supplementation, No vitamin A supplementation
Biological
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
1 Year to 4 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 5, 2025 · Synced Oct 4, 2026, 2:14 PM 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 4, 2026, 2:14 PM 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 4, 2026, 2:14 PM EDT
Completed Phase 1 Interventional

Study of Dasatinib and All-Trans Retinoic Acid for Relapsed/Refractory and/or Elderly Patients With Acute Myelogenous Leukemia (AML) or Myelodysplastic Syndrome

NCT00892190
View directory record Official record
Conditions
Acute Myelogenous Leukemia, Myelodysplastic Syndrome
Interventions
dasatinib (SPRYCEL), all trans retinoic acid (VESANOID)
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 10, 2016 · Synced Oct 4, 2026, 2:14 PM EDT
Completed Phase 2 Interventional

A Study of All-Trans Retinoic Acid (ATRA) and Bryostatin in Patients With Acute Myeloid Leukemia (AML) and Myelodysplastic Syndrome (MDS)

NCT00136461
View directory record Official record
Conditions
Acute Myelogenous Leukemia, Myelodysplastic Syndrome
Interventions
All-trans retinoic acid, Bryostatin 1
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2000
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 10, 2011 · Synced Oct 4, 2026, 2:14 PM 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 4, 2026, 2:14 PM 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 4, 2026, 2:14 PM EDT
Active, not recruiting Phase 2 Interventional

Open-Label Extension: Tolerability and Effects of ALK-001 on Stargardt Disease (TEASE)

NCT04239625
View directory record Official record
Conditions
Stargardt Disease, Stargardt Macular Degeneration, Stargardt Macular Dystrophy, Autosomal Recessive Stargardt Disease 1 (ABCA4-related)
Interventions
ALK-001
Drug
Lead sponsor
Alkeus Pharmaceuticals, Inc.
Industry
Eligibility
8 Years to 70 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2029
U.S. locations
8
States / cities
Phoenix, Arizona • Los Angeles, California • Aurora, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 4, 2026, 2:14 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 12, 2011 · Synced Oct 4, 2026, 2:14 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Oral Nutrition Impact on Tear Film

NCT01561040
View directory record Official record
Conditions
Dry Eye Syndrome
Interventions
Omega 3, Vitamins A, D3 and E
Dietary Supplement
Lead sponsor
Eye and Vision Technologies and Research Institute
Network
Eligibility
18 Years to 79 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
4
States / cities
Conifer, Colorado • Oak Lawn, Illinois • Lexington, Kentucky + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2012 · Synced Oct 4, 2026, 2:14 PM 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 4, 2026, 2:14 PM EDT
Completed Phase 2 Interventional

A Phase II Trial of All-Trans-Retinoic Acid in Combination With Interferon-Alpha 2a in Children With Recurrent Neuroblastoma or Wilms' Tumor

NCT00001509
View directory record Official record
Conditions
Nephroblastoma, Neuroblastoma
Interventions
IFN-alpha with retinoic acid
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 4, 2026, 2:14 PM EDT
Completed Phase 1Phase 2 Interventional

Vitamin A Supplementation for Extremely-Low-Birth-Weight Infants

NCT01203488
View directory record Official record
Conditions
Infant, Newborn, Infant, Low Birth Weight, Infant, Small for Gestational Age, Infant, Premature, Bronchopulmonary Dysplasia, Respiration, Artificial, Respiratory Distress Syndrome, Newborn, Sepsis
Interventions
Vitamin A, Sham Procedure
Drug · Other
Lead sponsor
NICHD Neonatal Research Network
Network
Eligibility
24 Hours to 96 Hours
Enrollment
807 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 1999
U.S. locations
11
States / cities
Palo Alto, California • New Haven, Connecticut • Washington D.C., District of Columbia + 8 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2017 · Synced Oct 4, 2026, 2:14 PM EDT
Completed Phase 1 Interventional

All-Trans Retinoic Acid (ATRA) and Atezolizumab for the Treatment of Recurrent or Metastatic Non-Small Cell Lung Cancer

NCT04919369
View directory record Official record
Conditions
Metastatic Lung Non-Small Cell Carcinoma, Recurrent Lung Non-Small Cell Carcinoma, Stage IV Lung Cancer AJCC v8, Stage IVA Lung Cancer AJCC v8, Stage IVB Lung Cancer AJCC v8
Interventions
Atezolizumab, Tretinoin
Biological · Drug
Lead sponsor
Dwight Owen
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Oct 4, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Vaccine Therapy, Tretinoin, and Cyclophosphamide in Treating Patients With Metastatic Lung Cancer

NCT00601796
View directory record Official record
Conditions
Lung Cancer
Interventions
Vaccine Treatment, Cyclophosphamide, All-trans retinoic acid (ATRA)
Biological · Drug
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 24, 2013 · Synced Oct 4, 2026, 2:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study Comparing Tretinoin Gel Microsphere, 0.04% and RETIN-A MICRO ® Gel Microsphere, 0.04% in the Treatment of Acne Vulgaris

NCT07469228
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Tretinoin Gel Microsphere, 0.04%, RETIN-A MICRO® (Tretinoin) Gel Microsphere, 0.04%, Placebo Control
Drug
Lead sponsor
Sun Pharmaceutical Industries, Inc.
Industry
Eligibility
12 Years to 40 Years
Enrollment
1,043 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 4, 2026, 2:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Rejuvant™ Safety and Biomarker Study

NCT04821401
View directory record Official record
Conditions
Aging Well
Interventions
Rejuvant, Placebo
Dietary Supplement
Lead sponsor
Ponce De Leon Health
Industry
Eligibility
45 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 15, 2022 · Synced Oct 4, 2026, 2:14 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 21, 2023 · Synced Oct 4, 2026, 2:14 PM EDT