Automating tumor-infiltrating lymphocyte assessment in breast cancer histopathology images using QuPath: a transparent and accessible machine learning pipeline

• URL: http://arxiv.org/abs/2504.16979v1
• Date: Wed, 23 Apr 2025 17:54:59 GMT
• Title: Automating tumor-infiltrating lymphocyte assessment in breast cancer histopathology images using QuPath: a transparent and accessible machine learning pipeline
• Authors: Masoud Tafavvoghi, Lars Ailo Bongo, André Berli Delgado, Nikita Shvetsov, Anders Sildnes, Line Moi, Lill-Tove Rasmussen Busund, Kajsa Møllersen,
• Abstract summary: We built an end-to-end tumor-infiltrating lymphocytes (TILs) assessment pipeline within QuPath.<n>We applied a pre-trained StarDist deep learning model in QuPath for cell detection and used the extracted cell features to train a binary classifier.<n>Our pipeline was evaluated against pathologist-assigned TIL scores, achieving a Cohen's kappa of 0.71 on an external test set.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this study, we built an end-to-end tumor-infiltrating lymphocytes (TILs) assessment pipeline within QuPath, demonstrating the potential of easily accessible tools to perform complex tasks in a fully automatic fashion. First, we trained a pixel classifier to segment tumor, tumor-associated stroma, and other tissue compartments in breast cancer H&E-stained whole-slide images (WSI) to isolate tumor-associated stroma for subsequent analysis. Next, we applied a pre-trained StarDist deep learning model in QuPath for cell detection and used the extracted cell features to train a binary classifier distinguishing TILs from other cells. To evaluate our TILs assessment pipeline, we calculated the TIL density in each WSI and categorized them as low, medium, or high TIL levels. Our pipeline was evaluated against pathologist-assigned TIL scores, achieving a Cohen's kappa of 0.71 on the external test set, corroborating previous research findings. These results confirm that existing software can offer a practical solution for the assessment of TILs in H&E-stained WSIs of breast cancer.

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