Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Jul 24, 2026, 1:44 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
HIV Infections
Interventions
Thymopentin
Drug
Lead sponsor
Immunobiology Research Institute
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Annandale, New Jersey
Completed Not applicable Interventional Accepts healthy volunteers Results available

Folic Acid and Zinc Supplementation Trial (FAZST)

NCT01857310
Conditions
Pregnancy, Live Birth, Spontaneous Abortion
Interventions
5 mg folic acid and 30 mg elemental zinc, Placebo Comparator: Placebo
Dietary Supplement · Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 45 Years
Enrollment
2,370 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
4
States / cities
Chicago, Illinois • Iowa City, Iowa • Minneapolis, Minnesota + 1 more
Conditions
Non-obstructive Azoospermia
Interventions
mTESE
Procedure
Lead sponsor
Mount Sinai Hospital, Canada
Other
Eligibility
18 Years and older · Male only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
2
States / cities
San Francisco, California • New York, New York
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Udenafil on Spermatogenesis

NCT01230541
Conditions
Spermatogenesis, Erectile Dysfunction
Interventions
Placebo, Udenafil
Drug
Lead sponsor
Warner Chilcott
Industry
Eligibility
25 Years to 64 Years · Male only
Enrollment
239 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
23
States / cities
Huntsville, Alabama • Anaheim, California • San Diego, California + 19 more
Conditions
Spermatogenesis and Semen Disorders, Infertility, Male
Interventions
Power Prenatal for Sperm
Dietary Supplement
Lead sponsor
The Bird and Be Co Inc
Industry
Eligibility
18 Years to 50 Years · Male only
Enrollment
174 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Encino, California
Conditions
Pregnancy, Infertility
Interventions
Timed intercourse, Microsurgical varicocelectomy, Intrauterine insemination
Behavioral · Procedure
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
9
States / cities
Aurora, Colorado • New Haven, Connecticut • Ann Arbor, Michigan + 6 more
Conditions
Benign Prostatic Hyperplasia
Interventions
Botulinum Toxin Type A, Placebo (saline)
Biological · Drug
Lead sponsor
Allergan
Industry
Eligibility
45 Years to 70 Years · Male only
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Los Angeles, California
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study Evaluating the Effects of Avanafil on Semen Parameters

NCT01768676
Conditions
Erectile Dysfunction
Interventions
avanafil, Placebo
Drug
Lead sponsor
VIVUS LLC
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
181 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
15
States / cities
Huntsville, Alabama • Los Angeles, California • San Diego, California + 12 more
Withdrawn Not applicable Interventional Accepts healthy volunteers

Assessing the Effect of Abstinence Period on Semen Parameters

NCT05701163
Conditions
Infertility, Male
Interventions
Abstinence followed by semen sample collection.
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
20 Years to 45 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
New York, New York
Conditions
Infertility, Male
Interventions
Ejaculatory abstinence less than 24 hours
Diagnostic Test
Lead sponsor
Boston IVF
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Waltham, Massachusetts
Conditions
Brain and Central Nervous System Tumors, Chemotherapeutic Agent Toxicity, Infertility
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 60 Years · Male only
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Completed Not applicable Interventional Accepts healthy volunteers Results available

Study of the Consumer Use of a New Home Test to Measure Sperm Concentration

NCT02475395
Conditions
Fertility, Male, Sub-Fertility, Male
Interventions
TRAK device
Device
Lead sponsor
Sandstone Diagnostics
Industry
Eligibility
20 Years to 50 Years
Enrollment
272 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
3
States / cities
Encino, California • Tarzana, California • Great Neck, New York
Completed No phase listed Observational Accepts healthy volunteers

Pesticides--Health Fertility and Reproductive Risk

NCT00015561
Conditions
Birth Defects, Miscarriages, Cancer
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 70 Years
Enrollment
1,803 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 2001
U.S. locations
1
States / cities
Minneapolis, Minnesota
Conditions
Prostate Cancer
Interventions
Semen analysis
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older · Male only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Jacksonville, Florida
Conditions
Birth Control
Interventions
WC then FC2, FC2 then WC
Device
Lead sponsor
CONRAD
Other
Eligibility
18 Years and older
Enrollment
505 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Los Angeles, California
Completed Not applicable Interventional Accepts healthy volunteers

The Stork OTC: Collection, Placement & Delivery

NCT02038322
Conditions
Safety and Usability
Interventions
The Stork - Conception Aid
Device
Lead sponsor
Rinovum Women's Health, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Monroeville, Pennsylvania
Withdrawn No phase listed Observational Accepts healthy volunteers

A Clinical Evaluation of Semen Quality Using the MiOXSYS™ System 2.0

NCT02839447
Conditions
Male Infertility
Interventions
Diagnostic
Diagnostic Test
Lead sponsor
Aytu BioPharma, Inc.
Industry
Eligibility
21 Years to 45 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
6
States / cities
Miami, Florida • New Orleans, Louisiana • Rochester, Minnesota + 3 more
Conditions
Hypogonadism, Male
Interventions
Natesto
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 55 Years · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Miami, Florida
Conditions
Cancer Survivor, Chronic Myeloproliferative Disorders, Leukemia, Lymphoma, Multiple Myeloma and Plasma Cell Neoplasm, Myelodysplastic Syndromes, Myelodysplastic/Myeloproliferative Neoplasms, Neuroblastoma, Testicular Germ Cell Tumor
Interventions
DNA analysis, polymerase chain reaction, flow cytometry, laboratory biomarker analysis
Genetic · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older · Male only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Nashville, Tennessee
Conditions
HIV Infections
Interventions
Indinavir sulfate, Lamivudine, Zidovudine
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
15
States / cities
Birmingham, Alabama • Los Angeles, California • Redwood City, California + 9 more
Conditions
Prostate Cancer
Interventions
Not listed
Lead sponsor
New Mexico Cancer Research Alliance
Other
Eligibility
Male only
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2012
U.S. locations
1
States / cities
Albuquerque, New Mexico
Conditions
Male Contraception, Semen Volume, Sperm Motility
Interventions
NLS-133, Placebo, Active Comparator #1
Drug
Lead sponsor
Next Life Sciences
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Conditions
Male Infertility
Interventions
YoSperm
Device
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Male only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Male Infertility
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Philadelphia, Pennsylvania