# Lapatinib and Tamoxifen in Treating Patients With Advanced or Metastatic Breast Cancer

> **NCT00424164** · PHASE1 · COMPLETED · sponsor: **European Organisation for Research and Treatment of Cancer - EORTC** · enrollment: 20 (estimated)

## Conditions studied

- Breast Cancer

## Interventions

- **DRUG:** lapatinib ditosylate
- **DRUG:** tamoxifen citrate
- **OTHER:** pharmacological study

## Key facts

- **NCT ID:** NCT00424164
- **Lead sponsor:** European Organisation for Research and Treatment of Cancer - EORTC
- **Sponsor class:** NETWORK
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2006-11
- **Primary completion:** 2009-06
- **Final completion:** 2010-05-28
- **Target enrollment:** 20 (ESTIMATED)
- **Last updated:** 2024-03-08


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00424164

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00424164, "Lapatinib and Tamoxifen in Treating Patients With Advanced or Metastatic Breast Cancer". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT00424164. Licensed CC0.

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