Clin Surg | Volume 4, Issue 1 | Research Article | Open Access

Deep Survival Model Identifies Prognostic Subgroups of Triple-Negative Breast Cancer Patients

Isaac Kim1, Sung Wook Seo2*, Jeong Eon Lee1*, Hee Jun Choi1, Jai Min Ryu1, Se Kyung Lee1, Jong Han Yu1, Seok Won Kim1 and Seok Jin Nam1

1Department of Surgery, Sungkyunkwan University School of Medicine, Republic of Korea
2Department of Orthopedic Surgery, Sungkyunkwan University School of Medicine, Republic of Korea

*Correspondance to: Sung Wook Seo 

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Objective: The aim of this study was to develop predict model for survival of BC patients using deep learning method and to apply our model for classifying the prognostic subgroups of TNBC patients.
Methods: We enrolled 7915 patients above pathologic stage 1 among 16254 patients who underwent surgery for breast cancer between May 1996 and January 2015. The enrolled patients were randomly sorted patients into a training group (80%, n=6288) and a test group (20%, n=1627). The Survival Recurrent Neural Network (SRN) model was constructed based on logistic regression function and long short-term memory recurrent neural network.
Results: The mean area under the receiver operating characteristics curve (AUC) of validation sets was 0.780 at 1st year, 0.840 at the 2nd year, 0.857 at 3rd year, 0.869 at 4th year, and 0.834 at 5th year. The mean AUC of test set was 0.945 at 1st year, 0.861 at 2nd year, 0.834 at 3rd year, 0.825 at 4th year, and 0.805 at 5th year. The c-index of the final model was 0.810 in the test group. In addition, the precision of SRN model was evaluated for classifying TNBC patients in test group. TNBC patients were classified into subgroups by SRN-suggested survival probability. Especially in pathologic stage 3 patients, SRN guided subgroups A, B and C were more precisely classified (P value <0.0001) than conventional stage IIIA, IIIB and IIIC (P value =0.292).
Conclusion: Our SRN model provides a useful tool for survival prediction of BC patients and also divides subgroup according to survival in TNBC patients.


Breast Neoplasm; Machine Learning; Survival


Kim I, Wook Seo S, Eon Lee J, Jun Choi H, Min Ryu J, Kyung Lee S, et al. Deep Survival Model Identifies Prognostic Subgroups of Triple- Negative Breast Cancer Patients. Clin Surg. 2019; 4: 2344.

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