Phase 3 Study Comparing Bria-IMT Regimen with Checkpoint Inhibitor versus Physicians Choice Treatment for Advanced or Metastatic Breast Cancer

What this Trial Is About

Researchers are evaluating overall survival in patients with advanced metastatic or locally recurrent breast cancer who have no approved alternative therapies available. This Phase 3, multicenter, randomized, open-label study compares a new combination treatment called the Bria-IMT regimen plus a checkpoint inhibitor Retifanlimab against treatment chosen by patients and their physicians. The study also aims to assess the effectiveness of the Bria-IMT regimen alone compared to its combination with the checkpoint inhibitor. The study includes three initial groups one receiving Bria-IMT plus Retifanlimab, one receiving physicians choice treatment such as eribulin, carboplatin, capecitabine, gemcitabine, vinorelbine, or taxanes, and one receiving Bria-IMT alone. After enrolling 150 patients, the Bria-IMT alone group will be stopped, and those patients may switch to the combination therapy. Treatment cycles for Bria-IMT arms occur every three weeks, with imaging assessments every six weeks twice, then every eight weeks if no disease progression or safety concerns arise. Participants will undergo various assessments throughout the study, including imaging and clinical evaluations, to track overall survival up to 60 months. Secondary outcomes include progression-free survival, clinical benefit rate, overall response rate, quality of life, and central nervous system event-free survival. Safety and treatment effects will be monitored continuously, and participants may be followed for up to five years after starting treatment.

Study of the Bria-IMT Regimen and CPI vs Physicians' Choice in Advanced Metastatic Breast Cancer.