Triple-Negative Breast Cancer Treatment: New Combination Approach Shows Promise
Hope for Aggressive Breast Cancer: combination Therapy Extends Remission
Table of Contents
Published August 21, 2025
the challenge of Triple-Negative Breast Cancer
For patients diagnosed with advanced triple-negative breast cancer (TNBC), a particularly aggressive form of the disease, treatment options have historically been limited. TNBC accounts for approximately 10 to 15 percent of all breast cancer cases, and often proves resistant to standard therapies, making it a significant challenge for oncologists and patients alike. But new research offers a beacon of hope.
promising Results from a Phase 2 Trial
Researchers at the Icahn School of Medicine at mount Sinai have demonstrated that adding the targeted therapy everolimus to standard carboplatin chemotherapy extends the period before the disease progresses in patients with advanced TNBC. A randomized Phase 2 clinical trial, published in Breast Cancer Research and Treatment, revealed a compelling 52 percent reduction in the risk of disease progression or death among patients receiving the combination treatment compared to those treated with carboplatin alone. Importantly, the combination was well-tolerated, with no unexpected safety concerns reported.
“Triple-negative breast cancer has limited treatment options and is often resistant to standard therapies. Our findings suggest that the combination of carboplatin and everolimus could offer a new option for patients, and should be further tested in larger clinical trials to confirm its effectiveness and safety.”
– Amy Tiersten, MD, Professor of Medicine (Hematology and Medical Oncology), Icahn School of Medicine
Understanding the Biological Mechanism
Many TNBC tumors are characterized by a deficiency in the PTEN gene. This gene normally acts as a crucial regulator of cell growth. When PTEN is missing, a signaling pathway known as mTOR becomes overactive, essentially accelerating cancer cell proliferation. Everolimus functions as an mTOR inhibitor, effectively blocking this “growth switch” and possibly slowing or halting the spread of the cancer. this targeted approach offers a more precise way to combat the disease than traditional chemotherapy alone.
Study Details and Patient Population
the Mount Sinai study involved patients with TNBC who had already undergone up to three prior lines of treatment. Participants were randomly assigned to receive either carboplatin alone or a combination of carboplatin and everolimus. The results showed that patients receiving the combination therapy experienced a longer period of time without their cancer worsening. Rima Patel, MD, Assistant Professor of Medicine (Hematology and Medical Oncology) at the Icahn School of Medicine and the study’s first author, stated that this combination “could represent a promising new treatment option for advanced triple-negative breast cancer if validated in phase 3 trials.”
What’s Next: Phase 3 Trials and Future Outlook
While these Phase 2 results are encouraging, larger Phase 3 clinical trials are essential to definitively confirm the efficacy of carboplatin and everolimus in metastatic TNBC. If these larger studies validate the findings,this combination could become a standard treatment option for patients with TNBC,offering a valuable choice to single-agent chemotherapy.
