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ClinicalTrials.gov public records Last synced May 22, 2026, 1:37 AM EDT

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

Showing 1–7 of 7 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Oligospermia Clear all
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Male Infertility, Klinefelter's Syndrome, Y-chromosome Microdeletions
Interventions
13-cis retinoic acid, Calcitriol
Drug
Lead sponsor
University of Washington
Other
Eligibility
21 Years to 60 Years · Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 1, 2021 · Synced May 22, 2026, 1:37 AM EDT
Enrolling by invitation Phase 2 Interventional
View directory record Official record
Conditions
Oligospermia, Azoospermia, Nonobstructive, Infertility
Interventions
isotretinoin, Human chorionic gonadotrophin (hCG)
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 50 Years · Male only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced May 22, 2026, 1:37 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Oligozoospermia, Asthenozoospermia, Teratozoospermia, Fertility
Interventions
Walnuts, OTC multivitamin
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years and older · Male only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced May 22, 2026, 1:37 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Varicocele, Male Infertility, Hypospermatogenesis, Non-Obstructive Azoospermia
Interventions
Varicocele repair
Procedure
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
21 Years to 55 Years · Male only
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2005
U.S. locations
2
States / cities
Camden, New Jersey • Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Sep 3, 2006 · Synced May 22, 2026, 1:37 AM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Primary Ovarian Insufficiency, Azoospermia, Oligospermia
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 100 Years
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
2
States / cities
Bethesda, Maryland • Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced May 22, 2026, 1:37 AM EDT
Terminated Phase 3 Interventional Results available
View directory record Official record
Conditions
Obesity, Oligospermia
Interventions
Anastrozole, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
16 Years to 80 Years · Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 5, 2016 · Synced May 22, 2026, 1:37 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Oligospermia, Teratospermia, Asthenozoospermia, Male Infertility
Interventions
Ramipril, Placebo
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 1, 2017 · Synced May 22, 2026, 1:37 AM EDT