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ClinicalTrials.gov public records Last synced Oct 9, 2026, 3:59 PM EDT

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Showing 121–144 of 180 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Vitamin A palmitate Clear all
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 21, 2009 · Synced Oct 9, 2026, 3:59 PM EDT
Recruiting Phase 2 Interventional

Essential Amino Acid Supplementation for Femoral Fragility Fractures

NCT06050668
View directory record Official record
Conditions
Femoral Fracture, Fragility Fracture, Muscle Atrophy
Interventions
Essential Amino Acid Supplementation
Combination Product
Lead sponsor
Michael C Willey
Other
Eligibility
65 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
2
States / cities
Iowa City, Iowa • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 3 Interventional

Determine the Efficacy of Topical Tretinoin Cream for the Prevention of Nonmelanoma Skin Cancer

NCT00007631
View directory record Official record
Conditions
Carcinoma, Basal Cell, Carcinoma, Squamous Cell, Skin Neoplasms
Interventions
Tretinoin 0.1% cream or placebo, Placebo
Drug · Other
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
Not listed
Enrollment
1,131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2006
U.S. locations
7
States / cities
Phoenix, Arizona • Long Beach, California • Miami, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2009 · Synced Oct 9, 2026, 3:59 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 9, 2026, 3:59 PM EDT
Completed Early Phase 1 Interventional Results available

Study to Determine Effect of Gentle Wounding to Stimulate Hair Follicle Neogenesis

NCT03491267
View directory record Official record
Conditions
Central Centrifugal Cicatricial Alopecia (CCCA)
Interventions
Retinoic acid, Laser, Sham treatment, Sham treatment
Drug · Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 80 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 3 Interventional

Tretinoin, Cytarabine, and Daunorubicin Hydrochloride With or Without Arsenic Trioxide Followed by Tretinoin With or Without Mercaptopurine and Methotrexate in Treating Patients With Acute Promyelocytic Leukemia

NCT00003934
View directory record Official record
Conditions
Adult Acute Myeloid Leukemia With t(15;17)(q22;q12), Adult Acute Promyelocytic Leukemia (M3), Childhood Acute Promyelocytic Leukemia (M3), Untreated Adult Acute Myeloid Leukemia, Untreated Childhood Acute Myeloid Leukemia and Other Myeloid Malignancies
Interventions
tretinoin, daunorubicin hydrochloride, cytarabine, mercaptopurine, methotrexate, arsenic trioxide
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
2
States / cities
Chicago, Illinois • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 5, 2013 · Synced Oct 9, 2026, 3:59 PM EDT
Recruiting Phase 1Phase 2 Interventional

ATRA and Carfilzomib in Plasma Cell Myeloma Patients

NCT06536413
View directory record Official record
Conditions
Multiple Myeloma
Interventions
All-Trans Retinoic Acid (ATRA) Dose 0, All-Trans Retinoic Acid (ATRA) Dose 1
Drug
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Prospective Study of Topical Adapinoid Versus Topical Retinol

NCT05778760
View directory record Official record
Conditions
Wrinkle
Interventions
Retinol, Adapinoid
Other
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
35 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jun 18, 2024 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Not applicable Interventional

A Randomized Trial of Vitamin D Supplementation With or Without Vitamin A in Stem Cell Transplantation

NCT03202849
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplant
Interventions
Vitamin D and A, Vitamin D and Placebo
Dietary Supplement
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Not listed
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 12, 2023 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Influenza Virus Vaccine Plus Vitamin A and D Supplements for Prevention of Respiratory Virus Infections in Children

NCT02649192
View directory record Official record
Conditions
Healthy Participants
Interventions
Influenza virus vaccine, Vitamins A and D, Placebo
Biological · Dietary Supplement · Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
2 Years to 8 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 29, 2019 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Retinol on Human Skin Aging in East Asian Descent

NCT02906566
View directory record Official record
Conditions
Intrinsic Aging of Skin
Interventions
Retinol, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 75 Years · Female only
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Apr 16, 2019 · Synced Oct 9, 2026, 3:59 PM EDT
Active, not recruiting Not applicable Interventional

Virtual Reality and Computerized Cognitive Intervention for Mild Cognitive Impairment in Heart Failure

NCT05601817
View directory record Official record
Conditions
Heart Failure, Mild Cognitive Impairment
Interventions
Vita, Com, Vita+Com
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
55 Years and older
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 1 Interventional

Combination Therapy With Ursodeoxycholic Acid (UDCA) and All-Trans Retinoic Acid (ATRA) for Treatment of Primary Sclerosing Cholangitis

NCT01456468
View directory record Official record
Conditions
Cholangitis, Sclerosing
Interventions
Oral all-trans retinoic acid (ATRA)
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 80 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
2
States / cities
New Haven, Connecticut • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 14, 2016 · Synced Oct 9, 2026, 3:59 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

The Dark-Adapted Retinal Function Response in Choroideremia (DARC) Study

NCT05045703
View directory record Official record
Conditions
Choroideremia
Interventions
Vitamin A palmitate
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
15 Years and older · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 29, 2023 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 4 Interventional

Efficacy and Safety of Therapy With Tri-Luma® Cream in Sequence With Glycolic Acid Peels for Melasma

NCT00472966
View directory record Official record
Conditions
Melasma
Interventions
Fluocinolone acetonide 0.1%/hydroquinone 4%/tretinoin 0.05% Cream in sequence with glycolic acid peels
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Jul 29, 2022 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 1 Interventional

Open Label Study: Treatment of ALS Fatigue With PolyMVA

NCT04557410
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
PolyMVA
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
Not listed
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 27, 2021 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 1 Interventional

Study of TCP-ATRA for Adult Patients With AML and MDS

NCT02273102
View directory record Official record
Conditions
Acute Myelogenous Leukemia, Myelodysplastic Syndromes, Leukemia
Interventions
Tranylcypromine, Tretinoin
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jul 21, 2020 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Not applicable Interventional

Perianal Maceration in Pediatric Ostomy Closure Patients

NCT04606004
View directory record Official record
Conditions
Perianal Dermatitis, Diaper Dermatitis, Postoperative Complications, Colostomy Site, Ileostomy - Stoma
Interventions
Stool application, Standard of care skincare
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
1 Day to 3 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 1, 2021 · Synced Oct 9, 2026, 3:59 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 14, 2016 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Comparison of the Cosmetic Effects of Bakuchiol and Retinol

NCT03112863
View directory record Official record
Conditions
Wrinkle, Photoaging
Interventions
Bakuchiol, Retinol
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
30 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Nov 2, 2021 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Vitamin A and Zinc: Prevention of Pneumonia (VAZPOP) Study

NCT00228254
View directory record Official record
Conditions
Pneumonia, Diarrhea, Acute Upper Respiratory Tract Infections
Interventions
Zinc (12.5 mg/day), vitamin A 10,000 IU per week
Drug
Lead sponsor
Tufts University
Other
Eligibility
6 Months to 36 Months
Enrollment
2,582 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2004
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 28, 2005 · Synced Oct 9, 2026, 3:59 PM EDT
Terminated Phase 1 Interventional

ZD6474 Alone and in Combination With Retinoic Acid in Pediatric Neuroblastoma

NCT00533169
View directory record Official record
Conditions
Neuroblastoma
Interventions
ZD6474, Retinoic Acid
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
2 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 15, 2011 · Synced Oct 9, 2026, 3:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Vitamin A Absorption From Fortified Bouillon

NCT06438562
View directory record Official record
Conditions
Healthy Volunteers, Vitamin A
Interventions
Unfortified bouillon plus vitamin A in oil, Bouillon fortified with vitamin A #1 plus unfortified oil, Bouillon fortified with vitamin A #2 plus unfortified oil
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Oct 9, 2026, 3:59 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 9, 2026, 3:59 PM EDT