CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 305 enrolled
Drug / intervention
Lapatinib Ditosylate +3 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT00770809
NCT00770809Phase 3Completed

Randomized Phase III Trial of Paclitaxel +Trastuzumab + Lapatinib Versus Paclitaxel + Trastuzumab as Neoadjuvant Treatment of HER2-Positive Primary Breast Cancer

National Cancer Institute (NCI)·interventional·Posted Oct 10, 2008·Updated Aug 15, 2025

In Brief

A Phase 3 clinical trial evaluating Laboratory Biomarker Analysis, Lapatinib Ditosylate, and 2 other interventions for Male Breast Carcinoma and 5 related conditions. Completed, enrolled 305 participants across 318 sites in 2 countries.

Detailed Summary

This randomized phase III trial studies paclitaxel and trastuzumab with or without lapatinib to see how well they work in treating patients with stage II or stage III breast cancer that can be removed by surgery. Drugs used in chemotherapy, such as paclitaxel, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Monoclonal antibodies, such as trastuzumab, can block tumor growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. Lapatinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving paclitaxel with trastuzumab and/or lapatinib before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed. It is not yet known which regimen is more effective in treating patients with breast cancer.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesPuerto Rico, United States
Collaborators--

Timeline

Phase 3CompletedFinished
200920102011201220132014201520162017201820192020202120222023202420252026
First PostedOct 10, 2008
Enrollment StartFeb 24, 2009
Primary CompletionJan 31, 2014
Study CompletionFeb 15, 2024
TodayJul 2, 2026
Enrollment to primary: 4.9 yearsPosted 17.7 years ago

Interventions

Laboratory Biomarker Analysisother

Correlative studies

Lapatinib Ditosylatedrug

Given PO

Paclitaxeldrug

Given IV

Trastuzumabbiological

Given IV