# The Role of 5-alpha Reductase in Mediating Testosterone Actions

> **NCT00493987** · PHASE4 · COMPLETED · sponsor: **Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)** · enrollment: 184 (estimated)

## Conditions studied

- Healthy

## Interventions

- **DRUG:** Testosterone Enanthate
- **DRUG:** Dutasteride

## Key facts

- **NCT ID:** NCT00493987
- **Lead sponsor:** Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- **Sponsor class:** NIH
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2002-11
- **Primary completion:** 2009-12
- **Final completion:** 2010-03
- **Target enrollment:** 184 (ESTIMATED)
- **Last updated:** 2010-05-13


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00493987

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00493987, "The Role of 5-alpha Reductase in Mediating Testosterone Actions". Retrieved via AI Analytics 2026-07-15 from https://api.ai-analytics.org/clinical/NCT00493987. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*