The TNM8 Breast Cancer Calculator is a specialized app designed for iPhone users, providing a thorough and intuitive approach to breast cancer staging. It is based on the AJCC Cancer Staging Manual 8th Edition, which includes both Anatomic Stage and the more advanced Clinical and Pathological Prognostic Stages. This app integrates essential prognostic factors such as Tumor Grade, HER2, Estrogen Receptor, and Progesterone Receptor, enhancing its accuracy in predicting cancer outcomes.

The application caters to healthcare professionals including surgeons and oncologists, allowing them to assess staging based on clinical history, imaging studies, and surgical findings. It quantifies changes in prognosis relative to Anatomic Stage, facilitating a better understanding of patient outcomes. Additionally, it offers features for genomic profiling when indicated, making it a valuable resource in breast oncology.