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Home > Archives > Volume 19, No 8 (2021) > Article

DOI: 10.14704/nq.2021.19.8.NQ21108

Immunohistochemical Expression of EGFR and ErbB2/ HER2 in Human Meningioma. A Clinicopathological Study

Zeena Ayad Khalid, Sazan Abdulwahab Mirza and Azza Nazar Dhannoon

Abstract

Background: meningioma is considered a common benign tumor and more frequent happen, they are slow growing primary tumors that originate from meningothelial cells of the arachnoid and spinal cord. The histological grade of the WHO and the extension of the initial surgical resection are determining prognostic factors in these tumors. Aim of the study: To investigate the expression of EGFR and ErbB2 / HER2 in human meningiomas, to correlate this expression with various clinic pathological parameters (age, gender, tumor type, tumor grade), and to study the correlation between these two markers. Methods: this is a retrospective study including 30 cases of human meningiomas. Clinical data collected from patient's files. Immunohistochemical study of EGFR and ErbB2/HER2 performed along with scoring. Results: this study included 30 cases of meningioma. There was a significant statistical correlation between tumor grade and tumor histological type, as 100% of grade II were atypical meningiomas, and 77.8% of grade I were meningiothelial meningiomas, with a P value 0.0001. 25/30 cases showed positive immunohistochemical expression of EGFR, 24/25 (96%) cases were grade I, 1/25 (4%), 16/25(72%) cases were meningiothelial, 1/25 (4%) case angiomatous, 1/25 (4%) case atypical, 5/25 (20%) cases were fibroblastic. only 4/30 cases showed expression of HER 2/ neu, 3/4(75%) cases were female, all cases were above 30 years of age, all cases were grade I, 2/4 (50%) cases were fibroblastic and the other two cases were meningiothelial type. Conclusions: EGFR is frequently over expressed in meningiomas, there was a significant difference between mean of EGFR and HER 2, EGFR have more positive results than HER 2.

Keywords

Meningioma, EGFR, ErbB2/HER2.

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