# Feasibility Study for the Determination of Oxysterols in Patients With Breast Cancer Receiving Hormonal Therapy With Tamoxifen or Not

> **NCT01553903** · PHASE4 · COMPLETED · sponsor: **Institut Claudius Regaud** · enrollment: 29 (actual)

## Conditions studied

- Breast Cancer

## Interventions

- **DRUG:** Tamoxifen,
- **DRUG:** Exemestane
- **DRUG:** Anastrozole
- **DRUG:** Letrozole

## Key facts

- **NCT ID:** NCT01553903
- **Lead sponsor:** Institut Claudius Regaud
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2011-12
- **Primary completion:** 2013-05
- **Final completion:** 2013-05
- **Target enrollment:** 29 (ACTUAL)
- **Last updated:** 2026-04-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01553903

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01553903, "Feasibility Study for the Determination of Oxysterols in Patients With Breast Cancer Receiving Hormonal Therapy With Tamoxifen or Not". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT01553903. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*