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Clinical trialNCT00096369TerminatedPhase 2Interventional

Tamoxifen in Preventing Breast Cancer in Women at Increased Risk for Breast Cancer

SponsorUniversity of Texas Southwestern Medical CenterEnrollment130Breast Cancer
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. The use of tamoxifen may be effective in preventing breast cancer. PURPOSE: This randomized phase II trial is studying tamoxifen to see how well it works compared to placebo in preventing breast cancer in women who are at increased risk for the disease.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

4 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Oklahoma University Cancer Institute

    Oklahoma City, Oklahoma, United States

  • Simmons Comprehensive Cancer Center at University of Texas Southwestern Medical Center - Dallas

    Dallas, Texas, United States

  • M.D. Anderson Cancer Center at University of Texas

    Houston, Texas, United States

  • Cancer Therapy and Research Center

    San Antonio, Texas, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Tamoxifen →
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
29 Feb 2000
Primary completion
15 Mar 2007
Completion
15 Mar 2007
Last update posted
24 Jan 2019
Registered enrollment
130
Registry id
NCT00096369
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.