Breast Cancer Biomarker Classification Revolutionizes Pathology Workflows
![]()
Executive Summary
The Breast Cancer Biomarker Classification project leverages artificial intelligence to predict four critical biomarkers—ER, PR, Ki-67, and HER2—from routine H&E histology images. This AI-driven solution accelerates triage workflows and reduces reliance on expensive and time-consuming IHC panels. By automating the biomarker prediction process, the platform helps pathologists quickly prioritize cases for further testing, improving diagnostic efficiency, and reducing costs. With strong validation results and a scalable web app, this solution is primed for clinical validation and integration into existing workflows.
Introduction
Breast cancer diagnosis relies heavily on the assessment of biomarker expression to determine the most effective treatment plans. Traditionally, immunohistochemistry (IHC) panels are used to evaluate biomarkers like ER, PR, Ki-67, and HER2, but this process is time-consuming, costly, and labor-intensive. The Breast Cancer Biomarker Classification project aims to automate this process, enabling faster and more cost-effective triage by leveraging AI models trained on the IHC4BC dataset. This solution not only supports pathologists by providing rapid, accurate predictions but also offers substantial cost savings by reducing the need for routine IHC panels.
The Problem
Cost and Time Constraints: Traditional IHC testing can be expensive and time-consuming, leading to delays in diagnosis and increasing healthcare costs. Labor-Intensive Process: Manual biomarker evaluation requires substantial labor and expertise, making it difficult to scale in high-volume clinical settings. Backlog in Pathology: Laboratories are often overwhelmed by large volumes of cases, leading to delays in processing and reporting, which can impact patient outcomes. Inconsistent Quality Control: The quality and consistency of manual assessments can vary, affecting the reliability of results and creating challenges in audits and quality assurance.
The Solution
The Breast Cancer Biomarker Classification project introduces an AI-powered pipeline designed to streamline and automate the biomarker classification process.
Predictive AI Models
The system uses deep learning models trained on the IHC4BC dataset to predict the expression of ER, PR, Ki-67, and HER2 from routine H&E histology images. This enables rapid, accurate assessments of breast cancer biomarkers without the need for costly and time-consuming confirmatory testing.
Lightweight Web Application
A user-friendly web app allows pathologists to upload slides, run batch inferences, and visualize positive/negative examples with ease. The app provides results that are exportable for downstream reporting, making it easy to integrate into existing laboratory information systems (LIS) or laboratory management systems (LIMS).

Cost-Saving Workflow
The AI triage model dramatically reduces the need for routine IHC panels by prioritizing cases for confirmatory testing. This results in significant cost savings, as the per-case reagent cost drops from hundreds of dollars to a fraction of that when AI is used for triage.
Conclusion
The Breast Cancer Biomarker Classification project represents a significant step forward in automating and streamlining breast cancer diagnosis. By reducing the need for expensive IHC panels, the platform offers substantial cost savings while improving the speed and consistency of biomarker assessments. With strong validation performance and an intuitive web app for integration, this solution is poised for clinical validation and adoption as a triage and decision-support tool in pathology workflows.
This project showcases the transformative potential of AI in healthcare, providing a clear path for scaling and clinical validation to enhance patient care while reducing the costs and workload for pathologists.