ABSTRACT
Objective To study the expression of HER-3 in breast cancer patients and analyze its relationship with the clinical pathology and prognosis of breast cancer,ER,PR and HER-2.Methods Data of 139 female breast cancer patients undergoing operations at the Second Hospital of Dalian Medical University from Jan.2006 to Oct.2006 were collected.These 139 patients didn't have preoperative chemotherapy or radiation therapy,but had postoperative endocrine therapies.Immunohistochemisty was used to detect the expression of HER-3 in the 139 patients.Data like the expression of ER,PR and HER-2,histological grading,tumor size and lymph node metastasis were obtained from their medical records.The relationship between indicators and breast cancer was analyzed.Results ①The positive expression rate of HER-3,HER-2,ER,and PR was 30.2％ (42/139),42.5％ (59/139),66.9％ (93/139),and 59.7％ (83/139) respectively.(②)The statistical items had no relation with patients' age(P ＞0.05).③HER-3 expression was correlated with tumor sizes,lymph node metastasis,histological grading,5 year survival rate and HER-2 expression(P ＜ 0.05),and had no relation with ER or PR(P ＞0.05).④)The combined expression of HER-3 & HER-2 was correlated with tumor sizes,axillary lymph node metastasis,histological grading,ER and PR.(P ＜ 0.05).Conclusions HER-3 detection is of great significance for the diagnosis and prognosis of breast cancer.The combined examination of HER-3,HER-2,ER,and PR in breast cancer tissues is of clinical significance for early diagnosis/treatment,medication and prognosis of the tumor,as well as for new drug research and development.