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ClinicalTrials.gov public records Last synced Oct 31, 2026, 4:30 AM EDT

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Showing 1177–1200 of 1,690 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Men Clear all
Completed No phase listed Observational Accepts healthy volunteers

Effects of Season on Melatonin Secretion in Healthy Men and Women and Patients With Seasonal Affective Disorder

NCT00001485
View directory record Official record
Conditions
Seasonal Affective Disorder
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1995 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Early Phase 1 Interventional

Pharmacodynamic Study of Radium-223 in Men With Bone Metastatic Castration-Resistant Prostate Cancer

NCT02204943
View directory record Official record
Conditions
Bone Metastatic Castration-Resistant Prostate Cancer
Interventions
Biomarker analysis, Administration of radium-223
Device · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 8, 2018 · Synced Oct 31, 2026, 4:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Single Dose Truvada in HIV-negative Men and Women

NCT01326221
View directory record Official record
Conditions
Pharmacokinetic Study in Healthy Volunteers
Interventions
tenofovir + emtricitabine
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 49 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 10, 2012 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Body's Response to Changes in Dietary Protein and Meal-Frequency In Men

NCT01171716
View directory record Official record
Conditions
Low Protein Dietary Intake, High Protein Dietary Intake
Interventions
Meal Patterning
Other
Lead sponsor
Purdue University
Other
Eligibility
21 Years and older · Male only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 17, 2013 · Synced Oct 31, 2026, 4:30 AM EDT
Recruiting Not applicable Interventional

Men With Prostate Cancer: Optimizing Wellness by Enhanced Relief From Hot Flashes With Acupuncture

NCT07335224
View directory record Official record
Conditions
Hot Flashes, Acupuncture Therapy, Vasomotor Symptoms, Androgen Deprivation Therapy, Prostatic Neoplasms
Interventions
Acupuncture, Lifestyle Management
Other · Behavioral
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years and older · Male only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Fairfax, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Oct 31, 2026, 4:30 AM EDT
Active, not recruiting Phase 1 Interventional

Study of Nivolumab in Combination w Radium-223 in Men w Metastatic Castration Resistant Prostate Cancer

NCT04109729
View directory record Official record
Conditions
Metastatic Castration-resistant Prostate Cancer
Interventions
Nivolumab, Radium-223
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older · Male only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Not applicable Interventional

Gene Expression Outcomes in Interventions for Substance Using HIV+ Minority Men

NCT03143205
View directory record Official record
Conditions
Human Immunodeficiency Virus Infection, Inflammation
Interventions
AWARENESS for Sexual Minorities, Writing tasks
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 22, 2024 · Synced Oct 31, 2026, 4:30 AM EDT
Recruiting Phase 2 Interventional

Evaluating In Home Cancer Therapy Versus In Clinic Cancer Therapy in Black Men With Locally Advanced, Biochemically Recurrent and Metastatic Prostate Cancer

NCT07073794
View directory record Official record
Conditions
Biochemically Recurrent Prostate Carcinoma, Locally Advanced Prostate Carcinoma, Metastatic Prostate Carcinoma, Stage III Prostate Cancer AJCC v8, Stage IV Prostate Cancer AJCC v8
Interventions
Cancer Therapeutic Procedure, Health Care Delivery, Questionnaire Administration
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Male only
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 25, 2026 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Electronic Pre-exposure Prophylaxis (PrEP) Initiation and Maintenance Home Care System

NCT03729570
View directory record Official record
Conditions
Pre-exposure Prophylaxis
Interventions
ePrEP
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years to 29 Years · Male only
Enrollment
217 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
4
States / cities
Birmingham, Alabama • Atlanta, Georgia • Jackson, Mississippi + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 18, 2024 · Synced Oct 31, 2026, 4:30 AM EDT
Terminated Early Phase 1 Interventional

Pilot of Osanetant to Reduce Testosterone in Men With Adenocarcinoma of the Prostate

NCT05607342
View directory record Official record
Conditions
Prostate Adenocarcinoma
Interventions
Osanetant
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Male only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 21, 2024 · Synced Oct 31, 2026, 4:30 AM EDT
Recruiting Phase 2 Interventional

Adenosine Signaling Modulation and Immune Checkpoint Inhibition With Hormone Sensitive Oligometastatic Prostate Cancer

NCT05915442
View directory record Official record
Conditions
Oligometastatic Prostate Cancer
Interventions
Quemliclustat, Etrumadenant, Zimberelimab, Stereotactic Body Radiation Therapy
Drug · Radiation
Lead sponsor
Catherine Spina
Other
Eligibility
18 Years to 99 Years · Male only
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 20, 2025 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Phase 3 Interventional Results available

Hormone and Information Processing Study

NCT00539305
View directory record Official record
Conditions
Mild Cognitive Impairment, Alzheimer's Disease
Interventions
testosterone gel, placebo gel
Drug
Lead sponsor
University of Washington
Other
Eligibility
60 Years to 90 Years · Male only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 14, 2014 · Synced Oct 31, 2026, 4:30 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Communication and Intimacy-Enhancing Therapy for Men With Early Stage Prostate Cancer and Their Partners

NCT00503646
View directory record Official record
Conditions
Prostate Cancer, Psychosocial Effects of Cancer and Its Treatment, Sexual Dysfunction and Infertility, Sexuality and Reproductive Issues
Interventions
communication intervention, counseling intervention, questionnaire administration, psychosocial assessment and care
Other · Procedure
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
2
States / cities
New York, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 17, 2013 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Phase 4 Interventional

Assessment Of Sildenafil On Erectile Function And Intercourse Satisfaction And To Validate A New Subject Questionnaire

NCT00147628
View directory record Official record
Conditions
Impotence
Interventions
sildenafil citrate, placebo for sildenafil citrate
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
18 Years and older · Male only
Enrollment
209 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
20
States / cities
Huntsville, Alabama • San Diego, California • Aurora, Colorado + 17 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Phase 3 Interventional Results available

Optimizing Protein Intake in Older Americans With Mobility Limitations

NCT01275365
View directory record Official record
Conditions
Mobility Limitation
Interventions
Testosterone enanthate
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
65 Years and older · Male only
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Oct 31, 2026, 4:30 AM EDT
Terminated Phase 2 Interventional Results available

Effects and Safety of OPK-88004 Doses in Men With Signs and Symptoms of Benign Prostatic Hyperplasia (BPH)

NCT03297398
View directory record Official record
Conditions
Benign Prostatic Hyperplasia
Interventions
Group-1 (15mg, OPK-88004), Group-2 (25 mg,OPK-88004), Placebo
Drug · Other
Lead sponsor
OPKO Health, Inc.
Industry
Eligibility
45 Years and older · Male only
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
15
States / cities
Anniston, Alabama • Lincoln, California • Sacramento, California + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2021 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Oral Testosterone Undecanoate in Hypogonadal Men

NCT03198728
View directory record Official record
Conditions
Hypogonadism, Male
Interventions
SOV2012-F1, AndroGel
Drug
Lead sponsor
Marius Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
314 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
36
States / cities
Birmingham, Alabama • Mobile, Alabama • Tucson, Arizona + 31 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2023 · Synced Oct 31, 2026, 4:30 AM EDT
Not listed Not applicable Interventional

Pilot Study to Determine the Safety and Efficacy of Gardasil Against the Human Papilloma Virus (HPV) in HIV-infected Men

NCT00666107
View directory record Official record
Conditions
Anal Cancer, HIV Infections
Interventions
Gardasil
Biological
Lead sponsor
Southern California Institute for Research and Education
Other
Eligibility
18 Years and older · Male only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Long Beach, California
Source: ClinicalTrials.gov public record
Updated Mar 14, 2012 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Pharmacokinetics and Safety of Methylphenidate HCl in Healthy Japanese Adult Male Volunteers

NCT01202734
View directory record Official record
Conditions
Healthy
Interventions
Methylphenidate HCl
Drug
Lead sponsor
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Industry
Eligibility
20 Years to 35 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated May 16, 2014 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Phase 4 Interventional

Effect of Testosterone Replacement on Insulin Resistance

NCT00487734
View directory record Official record
Conditions
Metabolic Syndrome, Hypogonadism
Interventions
Testosterone gel, Placebo for testosterone gel
Radiation · Drug
Lead sponsor
McGuire Research Institute
Other
Eligibility
20 Years to 65 Years · Male only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 23, 2012 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Phase 1 Interventional

Impact of Acetazolamide in Reducing Referred Postoperative Pain

NCT04470843
View directory record Official record
Conditions
Prostate Cancer, Men
Interventions
Acetazolamide, Placebo
Drug · Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Male only
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 23, 2022 · Synced Oct 31, 2026, 4:30 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Prebiotic Effects of California Grapes on Gut Health and Cardiometabolic Health in Overweight Men and Women

NCT06544954
View directory record Official record
Conditions
Arterial Stiffness, Blood Pressure, Dysbiosis, Inflammation, Permeability; Increased
Interventions
Freeze-dried grape powder, Placebo powder
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 31, 2026, 4:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Helping African American Prostate Cancer Survivors and Their Partners Cope With Challenges After Surgery for Prostate Cancer

NCT00869739
View directory record Official record
Conditions
Cancer Survivor, Depression, Gastrointestinal Complications, Male Erectile Disorder, Prostate Cancer, Psychosocial Effects of Cancer and Its Treatment, Urinary Complications
Interventions
telephone-based intervention, educational intervention, partner-assisted coping skills training, questionnaire administration, psychosocial assessment and care, quality-of-life assessment
Behavioral · Other · Procedure
Lead sponsor
East Carolina University
Other
Eligibility
Not listed
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 25, 2013 · Synced Oct 31, 2026, 4:30 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

KABAWIL: Reducing Intersectional Stigmas

NCT07786441
View directory record Official record
Conditions
Stigma, Social
Interventions
Stigma Reduction Intervention
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 31, 2026, 4:30 AM EDT