Objective:The aim of this study was to determine most significant prognostic factor for overall survival of invasiveduct operable breast cancer from clinical stage, pathological stage, epidemiological, anatomic and cellular andmolecular genetic factors. Materials and
Methods: Research design was prospective cohort. Duct invasive operablebreast cancer patients who were diagnosed and treated with standard protocol since 1993, followed prospectivelyuntil November 2003 by clinical stage, pathological stage, age, tumor size, lymph node status, histological grade,mitotic index, ER,PR, c-erbB2, p53 and MIB-1, until revealed outcome (death). Prognostic factor was analyzedunivariately for overall survival with Kaplan Meier method. Difference between two survival group was analyzedwith log- rank test. Independent prognostic factor was analyzed multivariately using proportional hazard (Cox)regression.
Results:With univariate analysis, significant prognostic factors for overall survival were clinical stage(p<0.001), pathological stage (p<0.001), tumor size (p<0.001), lymph node status (p<0.001) and adjuvant chemotherapy(p <0.005). Multivariately, most significant prognostic factors for survival were lymph node status (p = 0.001 ; Expβ = 7.775; 95% CI: 2.276 – 26.56) and clinical stage (p = 0.029; Exp β= 2.142; 95% CI: 1.081 – 4.244).
Conclusion:Independent prognostic factors for survival are lymph node status and clinical stage.