# Pre-Operative Window of Adjuvant Endocrine Therapy to Inform RT Decisions in Older Women With Early-Stage Breast Cancer

> **NCT04272801** · PHASE2 · ACTIVE_NOT_RECRUITING · sponsor: **Shayna Showalter, MD** · enrollment: 84 (actual)

## Conditions studied

- Breast Cancer Female

## Interventions

- **DRUG:** tamoxifen, letrozole, anastrozole, or exemestane
- **BEHAVIORAL:** Patient reported outcomes

## Key facts

- **NCT ID:** NCT04272801
- **Lead sponsor:** Shayna Showalter, MD
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2020-04-07
- **Primary completion:** 2024-06-05
- **Final completion:** 2026-06-01
- **Target enrollment:** 84 (ACTUAL)
- **Last updated:** 2025-10-22

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04272801

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04272801, "Pre-Operative Window of Adjuvant Endocrine Therapy to Inform RT Decisions in Older Women With Early-Stage Breast Cancer". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT04272801. Licensed CC0.

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