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ClinicalTrials.gov public records Last synced Oct 22, 2026, 4:46 AM EDT

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Showing 1–24 of 255 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Retinol Clear all
Completed Phase 3 Interventional Results available

Adapalene Gel 0.3% Versus Tretinoin 0.05% Emollient Cream for Treatment of Photodamage

NCT00647556
View directory record Official record
Conditions
Photoaging
Interventions
adapalene gel, 0.3%, tretinoin 0.05% emollient cream
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
40 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 1, 2022 · Synced Oct 22, 2026, 4:46 AM EDT
Completed Phase 2 Interventional Results available

A Trial of All-trans Retinoic Acid (ATRA) in Advanced Adenoid Cystic Carcinoma

NCT03999684
View directory record Official record
Conditions
Adenoid Cystic Carcinoma
Interventions
Tretinoin
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 23, 2023 · Synced Oct 22, 2026, 4:46 AM EDT
Completed Phase 1 Interventional

Evaluate Safety and Tolerability of Calcipotriene Foam 0.005% in Pediatric Subjects With Mild/Moderate Plaque Psoriasis

NCT01582932
View directory record Official record
Conditions
Psoriasis
Interventions
Calcipotriene 0.005% Foam
Drug
Lead sponsor
Mayne Pharma International Pty Ltd
Industry
Eligibility
2 Years to 11 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
36
States / cities
Birmingham, Alabama • Rogers, Arkansas • Encino, California + 30 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2019 · Synced Oct 22, 2026, 4:46 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 22, 2026, 4:46 AM EDT
Completed Phase 2 Interventional Results available

S0535, Gemtuzumab and Combination Chemotherapy in Treating Patients With Previously Untreated Acute Promyelocytic Leukemia

NCT00551460
View directory record Official record
Conditions
Leukemia
Interventions
arsenic trioxide, gemtuzumab ozogamicin, mercaptopurine, methotrexate, tretinoin
Drug
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years to 120 Years
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
192
States / cities
Roseville, California • Sacramento, California • Stanford, California + 139 more
Source: ClinicalTrials.gov public record
Updated Jan 10, 2023 · Synced Oct 22, 2026, 4:46 AM 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 22, 2026, 4:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Provitamin A Absorption and Conversion With Avocados

NCT01432210
View directory record Official record
Conditions
Healthy
Interventions
Post-prandial Feeding Study
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 30, 2016 · Synced Oct 22, 2026, 4:46 AM EDT
Completed Phase 4 Interventional Results available

Adherence to Study Medication Compared to Generic Topical Clindamycin Plus Generic Topical Tretinoin in Subjects With Mild to Moderate Acne Vulgaris

NCT01047189
View directory record Official record
Conditions
Acne Vulgaris
Interventions
clindamycin phosphate 1.2% and tretinoin 0.025%, clindamycin 1% gel, tretinoin 0.025% cream
Drug
Lead sponsor
Wake Forest University
Other
Eligibility
12 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 10, 2018 · Synced Oct 22, 2026, 4:46 AM 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 22, 2026, 4:46 AM EDT
Completed Phase 3 Interventional

Trial of Vitamins in HIV Progression and Transmission

NCT00197743
View directory record Official record
Conditions
HIV Infections, Disease Transmission, Vertical
Interventions
Vitamin A + Beta Carotene, Multivitamins, Placebo
Dietary Supplement · Other
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years and older · Female only
Enrollment
1,085 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2003
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 11, 2010 · Synced Oct 22, 2026, 4:46 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

B-Complex: A Nutraceutical SANS Countermeasure

NCT05366933
View directory record Official record
Conditions
Optic Disc Edema, Endothelial Dysfunction
Interventions
Vitamin B-Complex Supplement
Drug
Lead sponsor
National Aeronautics and Space Administration (NASA)
Federal
Eligibility
20 Years to 100 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2032
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced Oct 22, 2026, 4:46 AM EDT
Completed Phase 4 Interventional

Investigation of the Tolerability of Two Facial Cleansing Routines for Mild to Moderate Acne

NCT05446402
View directory record Official record
Conditions
Acne
Interventions
Geologie Acne Regimen - one side of face, Proactive Acne Regimen - other side of face
Combination Product
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 11, 2024 · Synced Oct 22, 2026, 4:46 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Combination Treatment for Moderate to Severe Acne

NCT01206348
View directory record Official record
Conditions
Acne
Interventions
Minocycline, Clindamycin, Tretinoin, Benzoyl Peroxide
Drug
Lead sponsor
Medicis Global Service Corporation
Industry
Eligibility
12 Years to 30 Years
Enrollment
97 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
10
States / cities
Birmingham, Alabama • Santa Monica, California • Hockessin, Delaware + 7 more
Source: ClinicalTrials.gov public record
Updated Nov 30, 2011 · Synced Oct 22, 2026, 4:46 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 22, 2026, 4:46 AM EDT
Completed Phase 1 Interventional

A Phase I Trial of Tamoxifen and 9-Cis-Retinoic Acid in Breast Cancer Patients

NCT00001504
View directory record Official record
Conditions
Breast Cancer, Breast Neoplasm
Interventions
9-cis-Retinoic Acid
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 22, 2026, 4:46 AM EDT
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 22, 2026, 4:46 AM EDT
Completed No phase listed Observational

Vitamin A, Stool Microbiota and Vaccine Response in Bangladeshi Infants

NCT02027610
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
Not listed
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
12 Months to 24 Months
Enrollment
258 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 18, 2015 · Synced Oct 22, 2026, 4:46 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Lipid Profile of the Skin Surface in Acne

NCT02180425
View directory record Official record
Conditions
Acne
Interventions
Tretinoin or Adapalene, Isotretinoin
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
12 Years to 30 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
2
States / cities
Davis, California • Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 22, 2026, 4:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Exploratory Investigation of a Supplement to Promote Cognitive Health Benefits

NCT05523115
View directory record Official record
Conditions
Anxiety, Stress, Memory Deficits, Cortisol Overproduction
Interventions
Heights Smart Supplement
Dietary Supplement
Lead sponsor
Heights
Industry
Eligibility
21 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Oct 22, 2026, 4:46 AM 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
158
States / cities
Birmingham, Alabama • Mobile, Alabama • Mesa, Arizona + 127 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2026 · Synced Oct 22, 2026, 4:46 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Evaluation of Irritation by Two Facial Gels Applied to Opposite Sides of the Face

NCT00919191
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Tretinoin gel, Adapalene and Benzoyl peroxide
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
26 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 22, 2026, 4:46 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Studying Different Formulations of SR13668 in Healthy Volunteers

NCT00896207
View directory record Official record
Conditions
Healthy, no Evidence of Disease
Interventions
Akt inhibitor SR13668
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 62 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 8, 2014 · Synced Oct 22, 2026, 4:46 AM EDT
Completed Phase 1 Interventional

Investigating the Effect of Vitamin A Supplementation on Retinitis Pigmentosa

NCT00065455
View directory record Official record
Conditions
Retinitis Pigmentosa
Interventions
Vitamin A
Drug
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 22, 2026, 4:46 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 22, 2026, 4:46 AM EDT