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Completed Phase 3 Interventional Results available

Tykerb Evaluation After Chemotherapy (TEACH): Lapatinib Versus Placebo In Women With Early-Stage Breast Cancer

ClinicalTrials.gov ID: NCT00374322

Public ClinicalTrials.gov record NCT00374322. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 5, 2026, 4:16 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Randomized, Double-blind, Multicenter, Placebo-controlled Study of Adjuvant Lapatinib (GW572016) in Women With Early-Stage ErbB2 Overexpressing Breast Cancer

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This study was designed to evaluate and compare the safety and efficacy of an oral dual tyrosine kinase inhibitor, lapatinib, versus placebo in women with early-stage ErbB2-overexpressing breast cancer who have completed their primary neoadjuvant or adjuvant chemotherapy and have no clinical or radiographic evidence of disease.

Study identification

NCT ID
NCT00374322
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
GlaxoSmithKline
Industry
Enrollment
3,166 participants

Conditions and interventions

Interventions

Drug · Other

Eligibility (public fields only)

Age range
18 Years and older
Sex
Female
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Aug 2006 (Type not available)
Primary completion
Sep 2011 (Actual)
Completion
Jul 2013 (Actual)
Last update posted
Aug 18, 2014

2006 – 2013

United States locations

U.S. sites
103
U.S. states
33
U.S. cities
94
Facility City State ZIP Site status
GSK Investigational Site Tuscaloosa Alabama 35406 —
GSK Investigational Site Phoenix Arizona 85012 —
GSK Investigational Site Sedona Arizona 86336 —
GSK Investigational Site Tucson Arizona 85715 —
GSK Investigational Site Fayetteville Arkansas 72703 —
GSK Investigational Site Jonesboro Arkansas 72401 —
GSK Investigational Site Little Rock Arkansas 72205 —
GSK Investigational Site Anaheim California 92801 —
GSK Investigational Site Bakersfield California 93309 —
GSK Investigational Site Gilroy California 95020 —
GSK Investigational Site La Jolla California 92037 —
GSK Investigational Site La Verne California 91750 —
GSK Investigational Site Palm Springs California 92262 —
GSK Investigational Site Rancho Mirage California 92270 —
GSK Investigational Site Denver Colorado 80220 —
GSK Investigational Site Fairfield Connecticut 06824 —
GSK Investigational Site Norwalk Connecticut 06856 —
GSK Investigational Site Torrington Connecticut 06790 —
GSK Investigational Site Washington D.C. District of Columbia 20007 —
GSK Investigational Site Washington D.C. District of Columbia 20010 —
GSK Investigational Site Boca Raton Florida 33428 —
GSK Investigational Site Boynton Beach Florida 33437 —
GSK Investigational Site Gainesville Florida 32605 —
GSK Investigational Site New Port Richey Florida 34655 —
GSK Investigational Site Ocala Florida 34474 —
GSK Investigational Site Orlando Florida 32806 —
GSK Investigational Site Plantation Florida 33324 —
GSK Investigational Site Port Saint Lucie Florida 34952 —
GSK Investigational Site Augusta Georgia 30901 —
GSK Investigational Site Marietta Georgia 30060 —
GSK Investigational Site Chicago Illinois 60611-2906 —
GSK Investigational Site Chicago Illinois 60611 —
GSK Investigational Site Joliet Illinois 60435 —
GSK Investigational Site Park Ridge Illinois 60068 —
GSK Investigational Site Indianapolis Indiana 46219 —
GSK Investigational Site Ames Iowa 50010 —
GSK Investigational Site Sioux City Iowa 51101-1733 —
GSK Investigational Site Wichita Kansas 67214 —
GSK Investigational Site Louisville Kentucky 40245 —
GSK Investigational Site Marrero Louisiana 70072 —
GSK Investigational Site Scarborough Maine 4074 —
GSK Investigational Site Bethesda Maryland 20817 —
GSK Investigational Site Boston Massachusetts 02114 —
GSK Investigational Site Danvers Massachusetts 01923 —
GSK Investigational Site Newton Massachusetts 02462 —
GSK Investigational Site Kalamazoo Michigan 49048 —
GSK Investigational Site Duluth Minnesota 55805 —
GSK Investigational Site Edina Minnesota 55435 —
GSK Investigational Site Minneapolis Minnesota 55404 —
GSK Investigational Site Robbinsdale Minnesota 55422 —
GSK Investigational Site Columbia Missouri 65201 —
GSK Investigational Site Kansas City Missouri 64118 —
GSK Investigational Site Saint Joseph Missouri 64507 —
GSK Investigational Site St Louis Missouri 63109 —
GSK Investigational Site St Louis Missouri 63141 —
GSK Investigational Site Hooksett New Hampshire 03106 —
GSK Investigational Site Cherry Hill New Jersey 08003 —
GSK Investigational Site Morristown New Jersey 07962 —
GSK Investigational Site Paramus New Jersey 07652 —
GSK Investigational Site Sparta New Jersey 07871 —
GSK Investigational Site Albany New York 12206 —
GSK Investigational Site East Setauket New York 11733 —
GSK Investigational Site Mount Kisco New York 10590 —
GSK Investigational Site New York New York 10003 —
GSK Investigational Site New York New York 10016 —
GSK Investigational Site Rochester New York 14623 —
GSK Investigational Site Charleston North Carolina 29406 —
GSK Investigational Site Gastonia North Carolina 28054 —
GSK Investigational Site Greensboro North Carolina 27403 —
GSK Investigational Site Hickory North Carolina 28602 —
GSK Investigational Site Cleveland Ohio 44106 —
GSK Investigational Site Cleveland Ohio 44195 —
GSK Investigational Site Columbus Ohio 43215 —
GSK Investigational Site Middletown Ohio 45042 —
GSK Investigational Site Drexel Hill Pennsylvania 19026 —
GSK Investigational Site Philadelphia Pennsylvania 19107 —
GSK Investigational Site Charleston South Carolina 29414 —
GSK Investigational Site Chattanooga Tennessee 37403 —
GSK Investigational Site Germantown Tennessee 38138 —
GSK Investigational Site Memphis Tennessee 38120 —
GSK Investigational Site Austin Texas 78705 —
GSK Investigational Site Austin Texas 78759 —
GSK Investigational Site Bedford Texas 76022 —
GSK Investigational Site Dallas Texas 75230 —
GSK Investigational Site Dallas Texas 75231 —
GSK Investigational Site Dallas Texas 75246 —
GSK Investigational Site Duncanville Texas 75137 —
GSK Investigational Site El Paso Texas 79902 —
GSK Investigational Site Fort Worth Texas 76104 —
GSK Investigational Site Houston Texas 77024 —
GSK Investigational Site Houston Texas 77030 —
GSK Investigational Site Round Rock Texas 78681 —
GSK Investigational Site San Antonio Texas 78229 —
GSK Investigational Site Tyler Texas 75702 —
GSK Investigational Site Waco Texas 76712 —
GSK Investigational Site Ogden Utah 84403 —
GSK Investigational Site Chesapeake Virginia 23320 —
GSK Investigational Site Fairfax Virginia 22031 —
GSK Investigational Site Richlands Virginia 24641 —
GSK Investigational Site Kirkland Washington — —
GSK Investigational Site Seattle Washington 98104 —
GSK Investigational Site Vancouver Washington 98684 —
GSK Investigational Site Yakima Washington 98902 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 336 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00374322, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Aug 18, 2014 · Synced Oct 5, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00374322 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →