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Completed Phase 3 Interventional Results available

A Study of Trastuzumab Emtansine (T-DM1) Plus Pertuzumab/Pertuzumab Placebo Versus Trastuzumab [Herceptin] Plus a Taxane in Participants With Metastatic Breast Cancer (MARIANNE)

ClinicalTrials.gov ID: NCT01120184

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This page only displays public information reproduced from the official ClinicalTrials.gov record NCT01120184. It adds no medical advice, opinions, or eligibility judgments. The official record remains the source of truth for eligibility criteria, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Nov 12, 2026, 9:06 AM EST

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Official title

A Randomized, 3 Arm, Multicenter, Phase III Study to Evaluate the Efficacy and the Safety of T-DM1 Combined With Pertuzumab or T-DM1 Combined With Pertuzumab-Placebo (Blinded for Pertuzumab), Versus the Combination of Trastuzumab Plus Taxane, as First Line Treatment in HER2 Positive Progressive or Recurrent Locally Advanced or Metastatic Breast Cancer

Brief summary

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

This randomized, 3-arm, multicenter, phase III study will evaluate the efficacy and safety of trastuzumab emtansine (T-DM1) with pertuzumab or trastuzumab emtansine (T-DM1) with pertuzumab-placebo (blinded for pertuzumab), versus the combination of trastuzumab (Herceptin) plus taxane (docetaxel or paclitaxel) in participants with HER2-positive progressive or recurrent locally advanced or previously untreated metastatic breast cancer. Participants will be randomized to 1 of 3 treatment arms (Arms A, B or C). Arm A will be open-label, whereas Arms B and C will be blinded.

Study identification

NCT ID
NCT01120184
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Hoffmann-La Roche
Industry
Enrollment
1,095 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
Jul 31, 2010 (Actual)
Primary completion
Sep 30, 2014 (Actual)
Completion
Sep 16, 2016 (Actual)
Last update posted
Mar 4, 2024

2010 – 2016

United States locations

U.S. sites
62
U.S. states
30
U.S. cities
58
Facility City State ZIP Site status
Uni of Arkansas For Medical Sciences; Arkansas Cancer Research Center Little Rock Arkansas 72204 —
Scripps Cancer Center La Jolla California 92037 —
University of California; Moores Cancer Center La Jolla California 92093 —
Clnc L Trials & Rsch Assoc-Inc Montebello California 90640 —
Southern California Kaiser Permanente San Diego California 92108 —
Breastlink Medical Group Inc Santa Ana California 92705 —
Kaiser Permanente; Oncology Clinical Trials Vallejo California 94589 —
Smilow Cancer Hospital at Yale New Haven New Haven Connecticut 06510 —
Innovative Medical Research of South Florida Aventura Florida 33180 —
Northwest Oncology/ Hematology Assoc. Coral Springs Florida 33065-5701 —
Florida Cancer Specialists; SCRI Fort Myers Florida 33901 —
Mayo Clinic-Jacksonville Jacksonville Florida 32224 —
Uni of Miami School of Medicine; Sylvester Comprehensive Cancer Center Miami Florida 33136 —
University Cancer & Blood Center, LLC; Research Athens Georgia 30607 —
Cancer Research Center of Hawaii; Clinical Sciences Honolulu Hawaii 96813 —
Mountain States Tumor Inst. Boise Idaho 83712 —
Uni of Chicago Chicago Illinois 60637 —
Decatur Memorial Hospital Decatur Illinois 62526 —
Ingalls Memorial Hospital Harvey Illinois 60426 —
Loyola University Med Center Maywood Illinois 60153 —
Illinois Cancer Care Peoria Illinois 61615 —
Indiana University Melvin and Bren Simon Cancer Center Indianapolis Indiana 46202 —
Horizon Oncology Research, Inc. Lafayette Indiana 47905 —
James Graham Brown Cancer Center, University of Louisville Louisville Kentucky 40202 —
New England Cancer Specialists Scarborough Maine 04074 —
Anne Arundel Health System Research Instit-Annapolis Oncology Ctr Annapolis Maryland 21401 —
Boston Medical Center Boston Massachusetts 02118 —
Spectrum Health Grand Rapids Grand Rapids Michigan 49503 —
University of Minnesota. Minneapolis Minnesota 55454 —
Mayo Clinic Rochester Rochester Minnesota 55902 —
Mercy Clinic Cancer & Hematology Springfield Missouri 65804 —
St. John'S Mercy Medical Center; David C. Pratt Cancer Center St Louis Missouri 63141 —
Dartmouth Hitchcock Med Center Lebanon New Hampshire 03756 —
Hackensack Uni Medical Center; Northern Nj Cancer Center Hackensack New Jersey 07601 —
Cancer Inst. of New Jersey New Brunswick New Jersey 08901 —
San Juan Oncology Associates Farmington New Mexico 87401 —
Queens Medical Associates Fresh Meadows New York 11366 —
Queens Hospital Center Jamaica New York 11432 —
Arena Oncology Associates Lake Success New York 11042 —
Icahn School of Medicine at Mount Sinai New York New York 10029 —
Weill Medical College of Cornell Uni New York New York 10065 —
Carolinas Hem-Oncology Assoc Charlotte North Carolina 28203 —
Carolina Oncology Specialists, PA - Hickory Hickory North Carolina 28602 —
Marion L. Shepard Cancer Center Washington North Carolina 27889 —
Sanford Roger Maris Cancer Center Fargo North Dakota 58102 —
Oncology Hematology Care - SCRI Cincinnati Ohio 45242 —
Penn State Milton S. Hershey Medical Center Hershey Pennsylvania 17033 —
Charleston Oncology, P .A Charleston South Carolina 29414 —
Medical University of SC (MUSC) Charleston South Carolina 29425 —
South Carolina Oncology Associates - SCRI Columbia South Carolina 29210 —
Avera Cancer Institute Sioux Falls South Dakota 57105 —
SCRI Tennessee Oncology Chattanooga Chattanooga Tennessee 37404 —
West Clinic Germantown Tennessee 38138 —
Tennessee Onc., PLLC - SCRI Nashville Tennessee 37203 —
Vanderbilt-Ingram Cancer Ctr Nashville Tennessee 37232 —
The Don & Sybil Harrington Cancer Center; Department of Clinical Research Amarillo Texas 79106 —
Uni of Texas Southwestern Medical Center Dallas Texas 75390-9063 —
Uni of Texas - Md Anderson Cancer Center; Dept of Breast Medical Oncology Houston Texas 77030 —
Northern Utah Associates Ogden Utah 84403 —
The Providence Regional Medical Center Everett Everett Washington 98201 —
University of Washington Seattle Washington 98195 —
Northwest Medical Specialties Tacoma Washington 98405 —

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 195 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT01120184, 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 Mar 4, 2024 · Synced Nov 12, 2026

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