Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT00392457 · ClinicalTrials.gov registry record · NA

Investigating the Regulation of Reproductive Hormones in Adult Men

A NA study, sponsored by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD).

Completed
Registry status
NA
Development phase
175
Enrollment target

NCT00392457: Completed NA study, sponsored by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD).

NCT00392457 is a NA study that has completed, run by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD). The registered enrollment target is 175 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (88% lower). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT00392457, a NA study, has completed, sponsored by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD).

COMPLETED
Registry status
NA
Development phase
175 participants
Enrollment target

Study Summary

The purpose of the research study is to learn more about the regulation of reproductive hormones in adult men. We would like to understand what role testosterone and estradiol play in controlling the release of LH (lutenizing hormone) and FSH (follicle stimulating hormone). Testosterone and estradiol come from the testes, and LH and FSH are released from a gland in the head called the pituitary. Men involved in the study will have detailed evaluations that involve overnight stays in the hospital and frequent blood sampling. The men in the study will also be receiving medications that affect the levels of various hormones in the body. This will allow the researchers to learn how various hormones influence each other. Men that participate in the study will receive medical evaluations and monetary compensation. Information gathered from this study will help in the development of new treatments for infertility and potentially new hormonal forms of contraception.

Interventions

  • DRUG ketoconazole
  • DRUG gonadotropin releasing hormone (GnRH)

Trial Details

FieldValue
Enrollment Target 175 participants
Start Date 1995-07
Est. Completion 2007-02
Phase NA

What the finished NCT00392457 record still lists

NCT00392457 is an interventional study that assigns participants to a tested intervention. The registered 175 participants enrollment target is mid-sized for trials with a published cap, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (88% lower).

The record links to 0 conditions, and to 2 interventions - of which ketoconazole is the first listed.

NCT00392457 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00392457 about?

NCT00392457 is a clinical study titled "Investigating the Regulation of Reproductive Hormones in Adult Men". The purpose of the research study is to learn more about the regulation of reproductive hormones in adult men. We would like to understand what role testosterone and estradiol play in controlling the release of LH (lutenizing hormone) and FSH (follicle stimulating hormone). Testosterone and estradio...

What is the current status of trial NCT00392457?

This trial is currently completed. It is a NA study. The enrollment target is 175 participants. The study started on 1995-07. Estimated completion is 2007-02.

What interventions are being tested in trial NCT00392457?

The interventions under investigation include: ketoconazole (DRUG), gonadotropin releasing hormone (GnRH) (DRUG).

Who is sponsoring clinical trial NCT00392457?

This trial is sponsored by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), which has 305 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00392457's enrollment target sits among peer trials

175 610th of 2000 higher than 1,391 of 2,000 other NA trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT04722341 · 175 participants · NA

    Time-Restricted Eating and Cancer: Clinical Outcomes, Mechanisms, and Moderators

  • NCT05094037 · 175 participants · NA

    Orthotic Treatment of Diabetic Foot Ulcers

  • NCT05165745 · 175 participants · NA

    Stick2PrEP Cisgender Women and Trans Individuals

  • NCT05312255 · 175 participants · NA

    Non-chemotherapeutic Interventions for the Improvement of Quality of Life and Immune Function in Patients With Multiple Myeloma

Similar registry start date

  • NCT05988463 · started 2027-01-01 · Phase 1

    Dose-Escalation Study of Artesunate Patients With IPF

  • NCT07219706 · started 2026-12-10 · NA

    Dietary Fiber and Time Restricted Eating

  • NCT02831335 · started 2026-12-01

    Technical Development of Multi-Parametric Renocerebral MRI

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

Source: ClinicalTrials.gov NCT00392457, the US trial registry maintained by the National Library of Medicine. NCT00392457 (mid enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.