Journal of Clinical and Diagnostic Research, ISSN - 0973 - 709X

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Original article / research
Year : 2017 | Month : July | Volume : 11 | Issue : 7 | Page : EC06 - EC08

Invasive Ductal Carcinoma Breast: How Neoadjuvant Chemotherapy Affects the Status of Estrogen Receptor, Progesterone Receptor and HER2/Neu- A Tertiary Care Centre Study

Swasti Shubham, Pratibha Maan, Monika Singh, Minakshi Bhardwaj

1. Assistant Professor, Department of Pathology, People's College of Medical Sciences, Bhopal, Madhya Pradesh, India. 2. Assistant Professor, Department of Pathology, SMS Medical College and Hospital,Jaipur, Rajasthan, India. 3. Senior Resident, Department of Pathology, PGIMER and Dr. RML Hospital, New Delhi, India. 4. Professor, Department of Pathology, PGIMER and Dr. RML Hospital, New Delhi, India.

Correspondence Address :
Dr. Swasti Shubham,
Assistant Professor, Department of Pathology, People's College of Medical Sciences,
Bhanpur, Bhopal-462023, Madhya Pradesh, India.
E-mail: swasti.shubham@gmail.com

Abstract

Introduction: Determination of Estrogen Receptor (ER), Progesterone Receptor (PR) and HER2/neu in primary Invasive Ductal Carcinoma (IDC) breast is the standard of care parameter for determining treatment options. Whether or not Neoadjuvant Chemotherapy (NAC) affects the receptor status is still an unanswered question.

Aim: To compare immunohistochemical (IHC) profiles of ER, PR and HER2/neu in primary IDC breast before and after NAC to assess the subsequent effects on receptor status.

Materials and Methods: Thirty two patients diagnosed with primary IDC breast who had a previous breast core biopsy with complete IHC profile followed by NAC and Modified Radical Mastectomy (MRM) were included. For each case demographic and histologic data was collected, including age, grade, amount of necrosis post NAC and IHC panel for ER, PR and HER2/neu in core biopsies. The same IHC panel was applied on Post NAC MRM specimen. Pre- and post NAC IHC expression was compared.

Results: Patients ranged from 30 years to 75 years in range. ER, PR and HER2/neu status of core biopsies and MRM specimen were compared and overall agreement was noted. Comparison for each receptor was done using McNemar’s test and significance was calculated. There was no statistically significant difference in ER and Her2/neu expression between pre- and post-NAC specimens. However, a statistically significant loss of PR expression was noted between the two groups.

Conclusion: Accurate determination of ER, PR and Her2/neu status in primary IDC breast is important to guide further treatment. Change in receptor status post NAC may warrant corresponding change in hormonal therapy.

Keywords

Immunohistochemistry, Mastectomy, Prognosis

How to cite this article :

Swasti Shubham, Pratibha Maan, Monika Singh, Minakshi Bhardwaj. INVASIVE DUCTAL CARCINOMA BREAST: HOW NEOADJUVANT CHEMOTHERAPY AFFECTS THE STATUS OF ESTROGEN RECEPTOR, PROGESTERONE RECEPTOR AND HER2/NEU- A TERTIARY CARE CENTRE STUDY. Journal of Clinical and Diagnostic Research [serial online] 2017 July [cited: 2017 Jul 20 ]; 11:EC06-EC08. Available from
http://jcdr.net/back_issues.asp?issn=0973-709x&year=2017&month=July&volume=11&issue=7&page=EC06-EC08&id=10201

DOI and Others

DOI: 10.7860/JCDR/2017/29063.10201

Date of Submission: Apr 04, 2017
Date of Peer Review: Apr 19, 2017
Date of Acceptance: Apr 29, 2017
Date of Publishing: Jul 01, 2017

Financial OR OTHER COMPETING INTERESTS: None.

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