Status:

TERMINATED

A Study of Trastuzumab Emtansine in Combination With Atezolizumab or Placebo as a Treatment for Participants With Human Epidermal Growth Factor 2 (HER2)-Positive and Programmed Death-ligand 1 (PD-L1)-Positive Locally Advanced (LABC) or Metastatic Breast Cancer (MBC)

Lead Sponsor:

Hoffmann-La Roche

Conditions:

Metastatic Breast Cancer

Eligibility:

All Genders

18+ years

Phase:

PHASE3

Brief Summary

This study will evaluate the efficacy, safety and patient-reported outcomes of trastuzumab emtansine plus atezolizumab compared with trastuzumab emtansine plus placebo in participants with HER2-positi...

Eligibility Criteria

Inclusion

  • HER2+ and PD-L1+ locally advanced (LABC) or metastatic breast cancer (MBC)
  • Progression must have occurred during most recent treatment for LABC/MBC or during, or within 6 months after completing, neoadjuvant and/or adjuvant therapy
  • Prior treatment with trastuzumab (+/- pertuzumab) and taxane in the neoadjuvant and/or adjuvant, locally advanced, or metastatic setting
  • No more than two prior lines of therapy in the metastatic setting
  • Measurable disease per RESIST version 1.1
  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1
  • Life expectancy \>= 6 months
  • Adequate hematologic and end-organ function
  • For women of childbearing potential: agreement to remain abstinent or use contraception, and agreement to refrain from donating eggs
  • For men: agreement to remain abstinent or use contraceptive measures, and agreement to refrain from donating sperm

Exclusion

  • Prior treatment with trastuzumab emtansine in metastatic setting
  • History of exposure to cumulative doses of anthracyclines
  • Symptomatic or actively progressing central nervous system (CNS) metastases; asymptomatic CNS lesions ≤ 2cm without clinical requirement for local intervention or asymptomatic patients with treated CNS lesions are eligible
  • Current Grade \>= 3 peripheral neuropathy
  • Cardiopulmonary dysfunction
  • History of malignancy within 5 years prior to initiation of study treatment, with the exception of the cancer under investigation and malignancies with a negligible risk of metastasis or death
  • History of leptomeningeal disease
  • Active or history of autoimmune disease or immune deficiency
  • Active hepatitis B, hepatitis C and/or tuberculosis
  • Prior allogeneic stem cell or solid organ transplantation
  • Receipt of a live, attenuated vaccine within 4 weeks prior to initiation of study treatment, during treatment, or within 5 months following the last dose of study treatment
  • Pregnancy or lactation

Key Trial Info

Start Date :

June 7 2021

Trial Type :

INTERVENTIONAL

Allocation :

ACTUAL

End Date :

June 19 2024

Estimated Enrollment :

96 Patients enrolled

Trial Details

Trial ID

NCT04740918

Start Date

June 7 2021

End Date

June 19 2024

Last Update

August 8 2025

Active Locations (51)

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Page 1 of 13 (51 locations)

1

Emad Ibrahim, Md, Inc

Redlands, California, United States, 92373

2

Peter MacCallum Cancer Center

Melbourne, Victoria, Australia, 3000

3

Hospital Sao Rafael - HSR

Salvador, Estado de Bahia, Brazil, 41253-190

4

Hospital do Cancer de Pernambuco - HCP

Recife, Pernambuco, Brazil, 50040-000