Characterization of Paired Box 8 (PAX8)-expressing Metastatic Breast Carcinoma
- Authors
- Kim, SW[Kim, So-Woon]; Kim, HS[Kim, Hyun-Soo]; Na, K[Na, Kiyong]
- Issue Date
- Oct-2020
- Publisher
- INT INST ANTICANCER RESEARCH
- Keywords
- Breast cancer; PAX8; immunohistochemistry
- Citation
- ANTICANCER RESEARCH, v.40, no.10, pp.5925 - 5932
- Indexed
- SCIE
SCOPUS
- Journal Title
- ANTICANCER RESEARCH
- Volume
- 40
- Number
- 10
- Start Page
- 5925
- End Page
- 5932
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/2925
- DOI
- 10.21873/anticanres.14613
- ISSN
- 0250-7005
- Abstract
- Background/Aim: Paired box 8 (PAX8) is an organ-specific marker discriminating Mullerian and breast carcinomas. Recent studies have described PAX8 expression in a small subset of breast carcinomas, which may cause a diagnostic pitfall in the determination of cancer origin. The aim of this study was to investigate characteristics of PAX8-expressing metastatic breast carcinomas (MBCs) to help elucidate the primary site of occurrence. Patients and Methods: Using immunohistochemistry, we examined PAX8 status in 80 MBCs and 52 matched primary breast carcinomas (PBCs). Results: A total of 20% of MBCs displayed PAX8 expression and the concordance rate of PAX8 expression between MBCs and PBCs was 92.3%. In MBCs, PAX8 expression was significantly associated with high-grade features (p.0.042), estrogen and progesterone receptor negativities (p=0.005 and p=0.017, respectively). Conclusion: PAX8 may be identified in MBCs with high-grade and non-luminal molecular subtypes. Careful assessment is needed when designating a primary site relying principally on PAX8 positivity.
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Collections - Medicine > Department of Medicine > 1. Journal Articles
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