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IJPM is coming out with a Special issue on "Genitourinary & Gynecological pathology including Breast". Please submit your articles for these issues
ORIGINAL ARTICLE
Year : 2018  |  Volume : 61  |  Issue : 1  |  Page : 31-38

Expression of breast cancer type 1 and its relation with expression of estrogen receptors, progesterone receptors, and human epidermal growth factor receptor 2/neu in breast carcinoma on trucut biopsy specimens


1 Department of Histopathology, Dr Lal Path Labs, New Delhi, India
2 Department of Pathology, Lady Hardinge Medical College, New Delhi, India
3 Department of Surgery, Lady Hardinge Medical College, New Delhi, India

Correspondence Address:
Deepti Verma
Dr Lal Path Labs, Sector-18, Rohini, New Delhi - 89
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/IJPM.IJPM_393_16

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Objective: (1) The objective is to study the immunohistochemical expression of Breast cancer type 1 (BRCA1) in breast carcinoma on trucut biopsy specimens and (2) To relate its expression with that of estrogen receptors (ER), progesterone receptors (PR), and human epidermal growth factor receptor 2 (HER-2)/neu and the clinicopathological parameters. Settings and Design: A cross-sectional hospital-based study was performed in Lady Hardinge Medical College and Shrimati Sucheta Kriplani Hospital, New Delhi, with collaboration of the Departments of Pathology and Surgery from the period of November 2008 to March 2010. Materials and Methods: The study group included 54 cytologically proven cases of breast carcinoma. The immunohistochemical expression of BRCA1 was studied and related with expression of ER, PR, and HER-2/neu on their trucut biopsies. Results: The altered expression of BRCA1 (i.e., reduced or absent expression) was seen in 44.4% cases of breast carcinoma while 55.6% had positive expression. About 83% of breast carcinomas with altered BRCA1 expression were larger than 3 cm in size. The breast carcinomas showing altered expression were found to be mostly high grade (63.6%). This was statistically significant. The ER and PR negativity were seen in 62.5% and 79.2% breast carcinomas with altered BRCA1 expression, respectively. The score 3 positivity of HER-2/neu was more common among carcinomas with altered BRCA1 expression (21% vs. 16.7%). The triple negativity was found in 41.7% breast carcinomas having altered BRCA1 expression. This was statistically significant. Conclusion: The combination of immunohistochemical expression of BRCA1, ER, PR, and HER-2/neu and clinicopathological details may be helpful in predicting the individuals more likely to carry BRCA1 mutations and thus selecting the candidate and family members for genetic screening for BRCA1 mutations.


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