Expression of anaplastic lymphokinase and HER2/neu immunostaining in patients with breast carcinoma

Syed Naqeeb Ali; Aneela Qureshi; Amin Fahim; Muhammad Yousif Khoso

doi:10.18203/2320-6012.ijrms20184401

Authors

Syed Naqeeb Ali Department of Pathology, Al-Tibri Medical College Karachi, Pakistan
Aneela Qureshi Department of Pathology, Al-Tibri Medical College Karachi, Pakistan
Amin Fahim Department of Pathology, Al-Tibri Medical College Karachi, Pakistan
Muhammad Yousif Khoso Department of Pathology, Al-Tibri Medical College Karachi, Pakistan

DOI:

https://doi.org/10.18203/2320-6012.ijrms20184401

Keywords:

Anaplastic lymphokinase, Breast cancer, Human epidermal growth factor receptor 2

Abstract

Background: The diagnosis and prognosis of breast cancer is done with various immunomarkers including estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor-2 (HER2/neu), and Ki-67. The diagnostic utility of Anaplastic Lymphokinase (ALK) and HER2/neu should be explored for better management of breast carcinoma patients. So, the present study was designed to determine the expression of immunostaining with ALK and HER2/neu in patients with breast cancer and to compare the association of ALK expression and HER2/neu with clinicopathological parameters.

Methods: This is a cross sectional multicenter study carried out from October 2016 to March 2017. A total of 140 subjects having breast carcinoma by using non-probability purposive sampling technique were selected. After taking informed consent, tissue samples were taken from received specimen of mastectomy for hematoxylin and eosin stain. The immunohistochemistry for ALK and HER2/neu were assessed on the paraffin blocks of the tumor.

Results: Out of total 140 cases invasive ductal carcinoma (89%), invasive lobular carcinoma (8%), invasive medullary carcinoma (2.1%) and papillary carcinoma (0.7%) were seen. ALK expression was positive in 81 patients (58%) while HER2/neu expression was positive in 53 cases (38%). Significant association was observed between ALK expression with histological grade, lymph node involvement, skin involvement and necrosis. There was also a significant association was seen between HER2/neu expression with lymph node metastasis and necrosis.

Conclusions: Present study shows higher expression of ALK when compared to HER2/neu expression in breast cancer patients.

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