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Showing 1–24 of 119 matching trials from the live ClinicalTrials.gov search.
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Completed Not applicable Interventional Accepts healthy volunteers Results available

Dose-Response of Gonadal Steroids and Bone Turnover in Older Men

NCT00114114
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Testosterone, Goserelin acetate
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
60 Years to 75 Years · Male only
Enrollment
177 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 7, 2019 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Hormonal Mechanisms of Sleep Restriction

NCT02256865
View directory record Official record
Conditions
Insulin Resistance
Interventions
Ketoconazole, Hydrocortisone, Testosterone, Placebo for ketoconazole, Placebo for hydrocortisone, Placebo for testosterone
Drug
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
22 Years to 45 Years · Male only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2023
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 3 Interventional Results available

Testopel ® vs. Generic Testosterone Pellets.

NCT04523480
View directory record Official record
Conditions
Hypogonadism
Interventions
Testopel 75mg Drug Implant, Testopel 100mg Drug Implant, Testopel 200mg Drug Implant
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 75 Years · Male only
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 13, 2023 · Synced Sep 9, 2026, 9:23 PM EDT
Not listed Phase 2 Interventional

Deslorelin Combined With Low-Dose Add-Back Estradiol and Testosterone in Preventing Breast Cancer in Premenopausal Women Who Are at High Risk for This Disease

NCT00080756
View directory record Official record
Conditions
brca1 Mutation Carrier, brca2 Mutation Carrier, Breast Cancer
Interventions
therapeutic estradiol, deslorelin, therapeutic testosterone, therapeutic conventional surgery, active surveillance, quality-of-life assessment, laboratory biomarker analysis
Biological · Drug · Procedure + 1 more
Lead sponsor
City of Hope Medical Center
Other
Eligibility
21 Years to 48 Years · Female only
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2024
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Aug 27, 2024 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

HOP-3 Manipulation of the Intratesticular Hormonal Milieu With Exogenous Testosterone

NCT00839319
View directory record Official record
Conditions
Healthy Males
Interventions
Acyline, placebo hCG (no active ingredient), hCG (human chorionic gonadotropin), Testosterone gel
Drug · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 10, 2016 · Synced Sep 9, 2026, 9:23 PM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

ITT-5 Mechanisms of Spermatogenesis in Man

NCT02147964
View directory record Official record
Conditions
Gonadotropin Deficiency
Interventions
Testosterone 1% Gel, Acyline, Dutasteride, Ketoconazole, HCG, placebo dutasteride, placebo ketoconazole
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 55 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sex Steroids, Sleep, and Metabolic Dysfunction in Women

NCT00805207
View directory record Official record
Conditions
Polycystic Ovary Syndrome (PCOS), Obstructive Sleep Apnea, Obesity
Interventions
Progesterone, testosterone, glucocorticoid, continuous positive airway pressure, Estrogen, Control
Drug · Device · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

TRADE-Testosterone Replacement and Dutasteride Effectiveness

NCT00194675
View directory record Official record
Conditions
Hypogonadism, Benign Prostatic Hyperplasia
Interventions
Dutasteride, Testosterone gel, Placebo dutasteride
Drug
Lead sponsor
University of Washington
Other
Eligibility
50 Years and older · Male only
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 4, 2017 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 2 Interventional Results available

Rapid Hormonal Cycling as Treatment for Patients With Prostate Cancer: The Men's Cycle

NCT00586898
View directory record Official record
Conditions
Prostate, Cancer, Hormonal Cycling
Interventions
GnRH, Ketoconazole, Bicalutamide, Testosterone transdermal gel, Estrogen transdermal patch
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 24, 2016 · Synced Sep 9, 2026, 9:23 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Effect of Androgel on Atherogenesis in Type 2 Diabetic Males With Hypogonadotrophic Hypogonadism

NCT00467987
View directory record Official record
Conditions
Type 2 Diabetic Male With Hypogonadotrophic Hypogonadism
Interventions
androgel, placebo
Drug
Lead sponsor
University at Buffalo
Other
Eligibility
31 Years to 60 Years · Male only
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Feb 5, 2024 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Anabolic and Inflammatory Responses to Short-Term Testosterone Administration in Older Men

NCT00957801
View directory record Official record
Conditions
Sarcopenia
Interventions
Testosterone injection, Testosterone gel, Medrol
Drug
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
60 Years to 85 Years · Male only
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated May 7, 2018 · Synced Sep 9, 2026, 9:23 PM EDT
Withdrawn Phase 4 Interventional

Effect of Testosterone Gel Replacement on Fat Mass in Males With Low Testosterone Levels and Diabetes

NCT00440440
View directory record Official record
Conditions
Hypogonadism, Diabetes
Interventions
Testosterone gel, placebo
Drug
Lead sponsor
Diabetes Center of the Southwest
Other
Eligibility
35 Years to 75 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Midland, Texas
Source: ClinicalTrials.gov public record
Updated Aug 9, 2015 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 2 Interventional Results available

Docetaxel With Rapid Hormonal Cycling as a Treatment for Patients With Prostate Cancer

NCT00587431
View directory record Official record
Conditions
Prostate Cancer
Interventions
GnRh (Leuprolide), Testosterone Gel, Docetaxel
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 6, 2023 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 1 Interventional

Study of the Safety, Tolerability and Pharmacokinetics of Testosterone Undecanoate in Hypogonadal Males.

NCT01346319
View directory record Official record
Conditions
Hypogonadal Males
Interventions
ABT-SLV361, placebo
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years to 80 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Fort Myers, Florida
Source: ClinicalTrials.gov public record
Updated Nov 2, 2011 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Novel Approaches for Minimizing Drug-Induced QT Interval Lengthening

NCT04675788
View directory record Official record
Conditions
Long QT Syndrome, Abnormalities, Drug-Induced
Interventions
Progesterone, Ibutilide, Testosterone, Placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
50 Years to 99 Years
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
3
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Sep 9, 2026, 9:23 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Adaptions and Resiliency to Multi-Stressor OpeRations

NCT06455969
View directory record Official record
Conditions
Musculoskeletal Injury, Hypogonadism, Hormonal Contraception
Interventions
Goserelin 3.6 MG, Multi-Stressor Training, Testosterone gel (AndroGel 5g), Testosterone gel (AndroGel 1.25g)
Drug · Other
Lead sponsor
Bradley Nindl
Other
Eligibility
18 Years to 40 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 9, 2026, 9:23 PM EDT
Active, not recruiting Phase 1 Interventional

Bipolar Androgen Therapy to Restore Sensitivity to Androgen Deprivation Therapy for Patients With Metastatic Castration Resistant Prostate Cancer

NCT06305598
View directory record Official record
Conditions
Castration-Resistant Prostate Carcinoma, Metastatic Prostate Carcinoma, Stage IVB Prostate Cancer AJCC v8
Interventions
Biopsy, Bone Scan, Computed Tomography, Leuprolide Acetate, Magnetic Resonance Imaging, Survey Administration, Testosterone Cypionate
Procedure · Drug · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older · Male only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 9, 2026, 9:23 PM EDT
Terminated Early Phase 1 Interventional Results available

Testosterone for Penile Rehabilitation After Radical Prostatectomy

NCT00848497
View directory record Official record
Conditions
Hypogonadism, Erectile Dysfunction
Interventions
Testim®, Placebo Testim®, Viagra®
Drug · Other
Lead sponsor
Mohit Khera
Other
Eligibility
18 Years and older · Male only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 18, 2015 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 4 Interventional Results available

A Study of the Effect of Topical Testosterone Replacement Therapy on Blood Pressure in Adult Male Participants With Hypogonadism

NCT04274894
View directory record Official record
Conditions
Hypogonadism
Interventions
AndroGel 1.62%
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years and older · Male only
Enrollment
246 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
45
States / cities
Foley, Alabama • Newport Beach, California • Northridge, California + 40 more
Source: ClinicalTrials.gov public record
Updated Dec 14, 2022 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Aromatase Inhibition Versus Testosterone in Older Men With Low Testosterone: Randomized-Controlled Trial.

NCT00104572
View directory record Official record
Conditions
Hypogonadism, Diabetes, Sarcopenia, Osteoporosis, Depression
Interventions
Androgel (Testosterone Gel), Anastrozole (Aromatase Inhibitor), Placebo tablet, Placebo gel, Calcium Cardone 500mg with vitamin D 400 IU
Drug · Dietary Supplement
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
65 Years and older · Male only
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 5, 2018 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Not applicable Interventional Results available

Testosterone Replacement Therapy in Advanced Chronic Kidney Disease

NCT00645658
View directory record Official record
Conditions
Kidney Failure, Kidney Diseases
Interventions
Testim, 1% testosterone gel
Drug
Lead sponsor
Palo Alto Veterans Institute for Research
Other
Eligibility
45 Years to 80 Years · Male only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
2
States / cities
Palo Alto, California • San Jose, California
Source: ClinicalTrials.gov public record
Updated Aug 25, 2024 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 2 Interventional Results available

Pilot Pharmacokinetic Study of Oral Testosterone Ester Formulations in Hypogonadal Men

NCT02697188
View directory record Official record
Conditions
Hypogonadism
Interventions
Testosterone undecanoate, Testosterone enanthate
Drug
Lead sponsor
Clarus Therapeutics, Inc.
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
2
States / cities
Los Angeles, California • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2018 · Synced Sep 9, 2026, 9:23 PM EDT
Completed Phase 3 Interventional

Bioequivalence Study of Test and Reference Testosterone Topical Gel, 1.62% Metered Pump in Testosterone Deficient Adult Male Subjects Under Fasting Conditions

NCT02110368
View directory record Official record
Conditions
Primary Hypogonadism, Hypogonadotropic Hypogonadism
Interventions
Testosterone Topical Gel, 1.62% Metered Pump, AndroGel (testosterone gel) 1.62% Metered-Dose Pump
Drug
Lead sponsor
Amneal Pharmaceuticals, LLC
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Miami Gardens, Florida
Source: ClinicalTrials.gov public record
Updated Jun 25, 2014 · Synced Sep 9, 2026, 9:23 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

A Phase 1/2a Study to Determine the Dose Response Pharmacokinetics of TSX-011 (Testosterone Undecanoate) in Hypogonadal Males

NCT03335254
View directory record Official record
Conditions
Hypogonadism, Hypogonadism, Male, Gonadal Disorders, Endocrine System Diseases, Testosterone Deficiency
Interventions
TSX-011
Drug
Lead sponsor
TesoRx Pharma, LLC
Industry
Eligibility
18 Years to 75 Years · Male only
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Glendale, California
Source: ClinicalTrials.gov public record
Updated May 15, 2019 · Synced Sep 9, 2026, 9:23 PM EDT