# Fertility Preservation Using Tamoxifen and Letrozole in Estrogen Sensitive Tumors Trial

> **NCT03011684** · PHASE3 · RECRUITING · sponsor: **University of California, San Francisco** · enrollment: 309 (estimated)

## Conditions studied

- Infertility

## Interventions

- **DRUG:** Tamoxifen
- **DRUG:** Letrozole

## Key facts

- **NCT ID:** NCT03011684
- **Lead sponsor:** University of California, San Francisco
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2016-07-21
- **Primary completion:** 2026-03-31
- **Final completion:** 2026-03-31
- **Target enrollment:** 309 (ESTIMATED)
- **Last updated:** 2025-05-08


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03011684

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03011684, "Fertility Preservation Using Tamoxifen and Letrozole in Estrogen Sensitive Tumors Trial". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT03011684. Licensed CC0.

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