ITT-5 Mechanisms of Spermatogenesis in Man
Public ClinicalTrials.gov record NCT02147964. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Mechanisms of Hormonal Control of Spermatogenesis in Man
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this investigational drug study is to determine how much male hormone, testosterone, is needed to maintain sperm production in the testis.
Study identification
- NCT ID
- NCT02147964
- Recruitment status
- Withdrawn
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- Not listed
Conditions and interventions
Conditions
Interventions
- Testosterone 1% Gel Drug
- Acyline Drug
- Dutasteride Drug
- Ketoconazole Drug
- HCG Drug
- placebo dutasteride Drug
- placebo ketoconazole Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 55 Years
- Sex
- Male
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 31, 2019
- Primary completion
- Nov 30, 2021
- Completion
- Nov 30, 2026
- Last update posted
- Dec 17, 2019
2019 – 2026
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Washington Medical Center (Health Sciences) | Seattle | Washington | 98195 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT02147964, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Dec 17, 2019 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02147964 live on ClinicalTrials.gov.