Immunohistochemical study of GATA-3 expression versus estrogen and progesterone receptor in invasive mammary carcinomas | ||
| Kasr Al Ainy Medical Journal | ||
| Volume 24, Issue 1, January 2018 PDF (617.81 K) | ||
| DOI: 10.4103/kamj.kamj_31_17 | ||
| Authors | ||
| Aya M. Ismail; Sara E. Khalifa; Eman M. Saied; Maha M. El-Tamamy | ||
| Abstract | ||
| Background Estrogen receptor (ER)-positive and progesterone receptor (PR)-positive breast tumors are characterized by a gene expression profile exhibiting profound differences from that of ER and PR-negative tumors. GATA-3 gene expression is correlated with ER in breast cancer. Aim We aimed to evaluate immunohistochemically the expression of GATA-3 in invasive breast carcinoma, comparing this with ER and PR status and available clinicopathological features, and also to detect the association between GATA-3 and the included breast cancer molecular subtypes. Materials and methods Fifty invasive breast carcinomas were studied for immunohistochemical demonstration of GATA-3 in the tumor cells. Cases were classified into two equal groups: group 1, that is, ER and PR positive, and group 2, that is, ER and PR negative. Molecular subtyping was applied. Results GATA-3 expression was detected in 88% of cases of group 1 and 56% of cases of group 2, showing direct association with ER and PR (=0.031) and also significant association with luminal-like breast tumors. In addition, GATA-3 showed an inverse association with Ki-67 (=0.0269); however, GATA-3 failed to show significant association with any of the clinicopathological parameters. Conclusion GATA-3 is an important luminal marker showing strong association with ER and PR in breast cancers, suggesting being a promising new breast-specific immunomarker that could be used for detection of breast cancer origin in metastatic tumors. | ||
| Keywords | ||
| breast cancer; estrogen receptor; GATA-3; luminal breast cancer; Progesterone receptor | ||
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