Ten-year APHINITY data show Roche’s Perjeta-based regimen reduced the risk of death by 17% in people with HER2-positive early-stage breast cancer

Core Insights - Roche, in collaboration with the Breast International Group (BIG) and other partners, announced significant overall survival results from the phase III APHINITY study for HER2-positive early-stage breast cancer, showing a 17% reduction in the risk of death after ten years for patients treated with a Perjeta-based regimen compared to those receiving Herceptin and chemotherapy [1][2][6]. Study Results - The APHINITY study demonstrated that 91.6% of patients treated with the Perjeta-based regimen were alive at ten years, compared to 89.8% for the control group, with a hazard ratio of 0.83 [6]. - A 21% reduction in the risk of death was observed in the subgroup of patients with lymph node-positive disease, with a hazard ratio of 0.79 [6][5]. - The previously reported invasive disease-free survival benefit was maintained, reinforcing earlier analyses [6][5]. Treatment Implications - The results validate the Perjeta-based regimen as a standard-of-care treatment for high-risk HER2-positive breast cancer patients, particularly those with lymph node-positive disease [2][4]. - Roche's commitment to improving outcomes for HER2-positive breast cancer patients is evident through the development of targeted therapies like Herceptin and Perjeta, which have transformed survival rates [11][10]. Future Presentations - Full results from the APHINITY study will be presented as a late-breaking abstract at the 2025 European Society for Medical Oncology Breast Cancer Congress [3].