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Completed Phase 3 Interventional Results available

A Study of Trastuzumab Emtansine in Comparison With Treatment of Physician's Choice in Participants With HER2-positive Breast Cancer Who Have Received at Least Two Prior Regimens of HER2-directed Therapy

ClinicalTrials.gov ID: NCT01419197

Public ClinicalTrials.gov record NCT01419197. 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 21, 2026, 12:42 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 Phase III Randomized, Multicenter, Two Arm, Open-label Trial to Evaluate the Efficacy of Trastuzumab Emtansine Compared With Treatment of Physician's Choice in Patients With HER2-positive Metastatic Breast Cancer Who Have Received at Least Two Prior Regimens of HER2 Directed Therapy

Brief summary

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

This randomized, multicenter, 2-arm, open-label study (TH3RESA) will evaluate the efficacy and safety of trastuzumab emtansine (T-DM1) in comparison with treatment of the physician's choice in participants with metastatic or unresectable locally advanced/recurrent human epidermal growth factor receptor 2 (HER2)-positive breast cancer. Eligible participants will be randomized to receive either trastuzumab emtansine 3.6 mg/kg intravenously every 21 days or treatment of the physician's choice. Participants continue to receive study treatment until disease progression or unacceptable toxicity occurs. This study is also known under Roche study protocol number BO25734.

Study identification

NCT ID
NCT01419197
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Hoffmann-La Roche
Industry
Enrollment
602 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
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
Sep 2011 (Type not available)
Primary completion
Feb 2013 (Actual)
Completion
Aug 2015 (Actual)
Last update posted
Oct 12, 2016

2011 – 2015

United States locations

U.S. sites
59
U.S. states
32
U.S. cities
55
Facility City State ZIP Site status
Not listed Tucson Arizona 85704 —
Not listed Hot Springs Arkansas 71913 —
Not listed Hayward California 94545 —
Not listed Highland California 92346 —
Not listed Oakland California 94611 —
Not listed Roseville California 95661 —
Not listed Sacramento California 95825 —
Not listed San Diego California 92108 —
Not listed San Francisco California 94115 —
Not listed San Jose California 95119 —
Not listed Santa Clara California 95051 —
Not listed South San Francisco California 94080 —
Not listed Stockton California 95204 —
Not listed Vallejo California 94589 —
Not listed Walnut Creek California 94596 —
Not listed West Hollywood California 90048 —
Not listed Denver Colorado 80220 —
Not listed Trumbull Connecticut 06611 —
Not listed Newark Delaware 19713 —
Not listed Washington D.C. District of Columbia 20010 —
Not listed Coral Springs Florida 33065 —
Not listed Deerfield Beach Florida 33442 —
Not listed Fort Myers Florida 33905 —
Not listed Jacksonville Florida 32256 —
Not listed Plantation Florida 33324 —
Not listed Marietta Georgia 30060 —
Not listed Post Falls Idaho 83854 —
Not listed Chicago Illinois 60612 —
Not listed Chicago Illinois 60637 —
Not listed Maywood Illinois 60153 —
Not listed Fort Wayne Indiana 46815 —
Not listed Sioux City Iowa 51101 —
Not listed Wichita Kansas 67214-3728 —
Not listed Scarborough Maine 04074 —
Not listed Bethesda Maryland 20817 —
Not listed Columbia Maryland 21044 —
Not listed Boston Massachusetts 02115 —
Not listed Boston Massachusetts 02130 —
Not listed Boston Massachusetts 02215 —
Not listed Detroit Michigan 48201 —
Not listed Minneapolis Minnesota 55455 —
Not listed St Louis Missouri 63141 —
Not listed Omaha Nebraska 68114 —
Not listed New Brunswick New Jersey 08901 —
Not listed Lake Success New York 11042 —
Not listed The Bronx New York 10467 —
Not listed Charlotte North Carolina 28203 —
Not listed Columbus Ohio 43219 —
Not listed Portland Oregon 97210 —
Not listed Philadelphia Pennsylvania 19104 —
Not listed Charleston South Carolina 29414 —
Not listed Chattanooga Tennessee 37404 —
Not listed Nashville Tennessee 37203 —
Not listed Nashville Tennessee 37232 —
Not listed Dallas Texas 75246 —
Not listed Fort Worth Texas 76104 —
Not listed San Antonio Texas 78229 —
Not listed Richmond Virginia 23230 —
Not listed Seattle Washington 98109 —

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 125 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT01419197, 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 Oct 12, 2016 · Synced Oct 21, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT01419197 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →