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An Open-Label Study of trastuzumab emtansine compared to physician's choice in patients with HER2-Positive Metastatic Breast Cancer.

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. - TH3RESA

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2011-000509-29-GB
Enrollment
600
Registered
2011-07-05
Start date
2011-12-02
Completion date
Unknown
Last updated
2019-06-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HER2-Positive Metastatic Breast Cancer (MBC) MedDRA version: 18.0 Level: PT Classification code 10065430 Term: HER-2 positive breast cancer System Organ Class: 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps) MedDRA version: 18.0 Level: LLT Classification code 10027475 Term: Metastatic breast cancer System

Interventions

Sponsors

F. Hoffmann-La Roche Ltd
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: • Age = 18 years • Histologically or cytologically documented breast cancer • Metastatic or unresectable locally advanced/recurrent breast cancer • HER2-positive disease by prospective central laboratory confirmation • Disease progression on the last systemic anti-cancer regimen received as defined by the investigator unless they were intolerant • Prior treatment with trastuzumab, lapatinib, and a taxane in any setting • Disease progression after at least two regimens of HER2 directed therapy in the metastatic or unresectable locally advanced/recurrent breast cancer • A minimum of 6 weeks of prior trastuzumab • Patients must have had at least 6 weeks prior exposure to lapatinib. Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 540 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 60

Exclusion criteria

Exclusion criteria: • Chemotherapy = 21 days before first study treatment • Trastuzumab = 21 days before first study treatment • Lapatinib = 14 days before first study treatment • Prior enrollment in a trastuzumab emtansine-containing study, regardless of whether the patient received prior trastuzumab emtansine • Brain metastases that are untreated or symptomatic, or require any radiation, surgery, or corticosteroid therapy to control symptoms within 1 month of randomization.

Design outcomes

Primary

MeasureTime frame
Main Objective: - Progression-free survival (PFS) per investigator assessment - Overall survival (OS) ; Secondary Objective: • To evaluate the objective response rate (ORR) and landmark survival rate (6-month survival rate and 1-year survival rate) of trastuzumab emtansine compared with treatment of physician’s choice • To evaluate the safety of trastuzumab emtansine compared with treatment of physician’s choice. ; Primary end point(s): • Progression-free survival by investigator assessment • Overall survival ; Timepoint(s) of evaluation of this end point: • The primary PFS (by investigator assessment) analysis will be performed when approximately 324 PFS events have occurred, which is projected to be approximately 16 months from first patient enrolled in the trial (FPI). • The first OS interim analysis will be performed at the time of the primary PFS analysis (approximately 16 months from FPI); the second interim analysis will be performed when approximately 67% of the targeted deaths (492) have occurred (approximately 26 months from FPI).

Secondary

MeasureTime frame
Secondary end point(s): • Objective response rate by investigator • Duration of objective response • Landmark survival rate. ;Timepoint(s) of evaluation of this end point: After either PFS or OS (at any interim or final analysis) shows statistical significance, the secondary endpoints will be tested sequentially.

Countries

Australia, Belgium, Brazil, Canada, Czech Republic, France, Germany, Hungary, India, Israel, Italy, Korea, Republic of, Norway, Poland, Russian Federation, Slovakia, Spain, Sweden, Switzerland, Thailand, United Kingdom, United States

Contacts

Public ContactTrial Information Support Line-TISL

F. Hoffmann-La Roche Ltd

global.rochegenentechtrials@roche.com

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026