deltatrials
Completed PHASE3 NCT00000177

Estrogen Hormone Protocol

Sponsor: National Institute on Aging (NIA)

Conditions Alzheimer Disease
Interventions Estrogen
Updated 6 times since 2017 Last updated: Dec 10, 2009 Started: Oct 31, 1995 Primary completion: Jan 31, 1999 Completion: Jan 31, 1999

This PHASE3 trial investigates Alzheimer Disease and is currently completed. National Institute on Aging (NIA) leads this study, which shows 6 recorded versions since 1995 — indicating limited longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Change History

6 versions recorded

  1. Sep 2025 — Present [monthly]

    Completed PHASE3

  2. Sep 2024 — Sep 2025 [monthly]

    Completed PHASE3

  3. Jul 2024 — Sep 2024 [monthly]

    Completed PHASE3

  4. Jan 2021 — Jul 2024 [monthly]

    Completed PHASE3

  5. Jun 2018 — Jan 2021 [monthly]

    Completed PHASE3

▶ Show 1 earlier version

  1. Jan 2017 — Jun 2018 [monthly]

    Completed PHASE3

    First recorded

Oct 1995

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • National Institute on Aging (NIA)
Data source: National Institute on Aging (NIA)

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

Atlanta, United States, Baltimore, United States, Birmingham, United States, Boston, United States, Chicago, United States, Cleveland, United States, Dallas, United States, Houston, United States, Indianapolis, United States, Jacksonville, United States and 13 more location s