# Hormone Replacement Therapy and the Risk of Breast Cancer Recurrence in Women With Previous Early Stage Breast Cancer

> **NCT00003771** · PHASE3 · COMPLETED · sponsor: **Regional Oncologic Center** · enrollment: 1300 (estimated)

## Conditions studied

- Breast Cancer
- Menopausal Symptoms

## Interventions

- **BIOLOGICAL:** therapeutic estradiol
- **DRUG:** norethindrone acetate

## Key facts

- **NCT ID:** NCT00003771
- **Lead sponsor:** Regional Oncologic Center
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 1997-09
- **Primary completion:** —
- **Final completion:** 2004-02
- **Target enrollment:** 1300 (ESTIMATED)
- **Last updated:** 2013-09-20

## Collaborators

- [object Object]
- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00003771

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00003771, "Hormone Replacement Therapy and the Risk of Breast Cancer Recurrence in Women With Previous Early Stage Breast Cancer". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT00003771. Licensed CC0.

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