Pathological parameters predicting HER-2/neu status of breast carcinoma

Journal of Diagnostic Pathology

L Mudduwa¹ 

[1] Department of Pathology, Faculty of Medicine, Galle

关键词: Breast carcinoma;    HER2;    ER;    PR;    NPI;    Nottingham grade;   

DOI  :  10.4038/jdp.v5i1.2955

学科分类：生理学与病理学

来源: College of Pathologists of Sri Lanka

【 摘 要 】

Introduction: Immunohistochemical detection of HER-2/neu expression in breast carcinoma is a required test, yet expensive. Only 10-30% of breast cancers over-express HER-2/neu. Therefore it is important to evaluate the pathological parameters which predict HER-2/neu expression in order to select patients for HER-2/neu assessment in a poor resource setting. Objective: To determine the positive and negative predictive values of Nottingham Grade, Nottingham Prognostic Index (NPI) and estrogen and progesterone receptor (ER and PR) status in predicting the HER-2/neu status of breast carcinoma. Method: Seventy five consecutive invasive breast carcinomas were assessed for HER-2/neu status at the Diagnostic Immunohistochemistry Laboratory, Department of Pathology, Faculty of Medicine, Galle. Predictive values of the aforementioned four histological parameters were assessed in predicting the HER-2/neu status of breast carcinoma. Results: Out of the 75 breast carcinomas 18 (24%) strongly expressed HER-2/neu. A Quick Score of 0 or 2 for ER gave a positive predictive value of 37% and a negative predictive value of 91% in predicting HER-2/neu status. The positive and negative predictive values of a Quick Score of 0 or 2 for PR were 32% and 86% respectively. The Nottingham grade being 2 or 3 had a positive predictive value of 26% and a negative predictive value of 91%. NPI of >3.4 had a positive predictive value of 26% and a negative predictive value 93.2%.Conclusion: Nottingham Grade of 2 or 3, NPI of >3.4 and a Quick Score of 0 or 2 for ER and PR have a good negative predictive value in predicting the HER-2/neu status of breast carcinoma. NPI is the best parameter in this respect. Keywords: Breast carcinoma; HER2; ER; PR; NPI; Nottingham grade. DOI: 10.4038/jdp.v5i1.2955 Journal of Diagnostic Pathology 2006/07; 5: 13-18

【 授权许可】

Unknown