Development of the predictive model for I stage breast cancer

Author:

Ismagilov A. Kh.1,Vanesyan A. S.2ORCID,Khuzina D. R.3ORCID

Affiliation:

1. Kazan State Medical Academy – branch of Federal State Budgetary Educational Institution of Higher Professional Education of Russian Medical Academy of Postgraduate Education of Ministry of Healthcare Russia

2. Clinic «Creu Blanca»

3. Tatarstan Regional Clinical Cancer Center

Abstract

Objective: development of a predictive model based on binary regression to determine the likelihood of progression of I stage breast cancer.Materials and methods. A retrospective analysis of data of 385 patients with T1N0M0 stage breast cancer was performed. The minimum follow-up period was 120 months and the maximum made 256 months, with an average follow-up of 191 ± 36 months (16 ± 3 years). Using a forward stepwise selection (binary regression), the most important prognostic factors were selected, on the basis of which the predictive model “Risk Assessment Algorithm for Recurrence of Breast Carcinoma” was constructed.Results. During the study period, recurrence of stage I breast cancer was reported in 67 patients, representing 17.4 % of the total cohort. Five prognostic factors were selected by binary regression: grade, histological type, estrogen receptor expression, HER2 / neu overexpression and Ki-67 amplification. Kaplan–Meier analysis and Cox proportional hazards method demonstrated the influence of each of the selected factors on disease-free survival. Comparative analysis with other existing models showed that our prognostic model is inferior to Adjuvant! Online in terms of sensitivity (85 % ver- sus 95 %). However, it is superior in specificity (58 % versus 38 %), PPV (69 % versus 63 %) and AUC (84 % versus 70 %).Conclusions. In I stage breast cancer, factors such as grade, histological type, estrogen receptor expression, HER2 / neu overexpression and Ki-67 amplification are the most significant predictive factors influencing recurrence rates. The algorithm for assessing the risk of recurrence of stage I breast cancer can predict the risk of tumour progression with a sensitivity of 84 % and a specificity of 58 % (p <0.05).

Publisher

Publishing House ABV Press

Subject

Pharmacology (medical),Obstetrics and Gynecology,Radiology, Nuclear Medicine and imaging,Oncology,Surgery

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