Cancer Management and Research (Nov 2019)
A Nomogram To Predict The Overall Survival Of Breast Cancer Patients And Guide The Postoperative Adjuvant Chemotherapy In China
Abstract
Xin Wang,1,* Ziwei Feng,1,* Yubei Huang,1 Haixin Li,1,2 Ping Cui,1 Dezheng Wang,3 Hongji Dai,1 Fangfang Song,1 Hong Zheng,1 Peishan Wang,1 Xuchen Cao,4 Lin Gu,5 Jin Zhang,6 Fengju Song,1 Kexin Chen1 1Department of Epidemiology and Biostatistics, National Clinical Research Center for Cancer，Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People’s Republic of China; 2Department of Cancer Biobank, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People’s Republic of China; 3Center for Non-Communicable Disease Control and Prevention, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, People’s Republic of China; 4The First Department of Breast Cancer, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People’s Republic of China; 5The Second Department of Breast Cancer, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People’s Republic of China; 6The Third Department of Breast Cancer, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, People’s Republic of China*These authors contributed equally to this workCorrespondence: Fengju Song; Kexin ChenTianjin Medical University Cancer Institute and Hospital, Huanhu Xi Road, Tiyuan Bei, Hexi District, Tianjin 300060, People’s Republic of ChinaTel/Fax +86-22-23372231Email [email protected]; [email protected]: We aim to construct a nomogram to predict breast cancer survival and guide postoperative adjuvant chemotherapy in China.Patients and methods: A total of 5,504 breast cancer patients from the Tianjin Breast Cancer Cases Cohort were included. Multivariable Cox regression was used to investigate the factors associated with overall survival (OS) and a nomogram was constructed based on these prognostic factors. The nomogram was internal and external validated and the performance was evaluated by area under the curve (AUC) and calibration curve. The partial score was also constructed and stratified them into low, moderate and high-risk subgroups for death according to the tripartite grouping method. Multivariate Cox regression analysis and the propensity score matching method were respectively used to test the association between adjuvant chemotherapy and OS in different risk subgroups.Results: Age, diameter, histological differentiation, lymph node metastasis, estrogen, and progesterone receptor were incorporated into the nomogram and validation results showed this nomogram was well-calibrated to predict the 3-year [AUC =74.1%; 95% confidence interval (CI): 70.1–78.0%] and 5-year overall survival [AUC =72.3%; 95% CI: 69.6–75.1%]. Adjuvant chemotherapy was negatively associated with death in high risk subgroup [Hazard Ratio (HR) = 0.54; 95% CI: 0.37–0.77; P<0.001]. However, no significant association were found in groups with low (HR=1.47; 95% CI: 0.52–4.19; P=0.47) and moderate risk (HR=0.78; 95% CI: 0.42–1.48; P=0.45). The 1:1 PSM generated 822 pairs of well-matched patients and Kaplan-Meier showed the high-risk patients could benefit from chemotherapy, whereas low risk and moderate risk subjects did not appear to benefit from chemotherapy.Conclusion: Not all of the breast cancer patients benefit equally from chemotherapy. The nomogram could be used to evaluate the overall survival of breast cancer patients and predict the magnitude of benefit and guide adjuvant chemotherapy for breast cancer patients after surgery.Keywords: breast cancer, prognostic prediction, cohort study, adjuvant chemotherapy
