Immunohistochemical expression of PRAME in 485 cases of epithelial tubo-ovarian tumors.

Autor: Šafanda, Adam, Kendall Bártů, Michaela, Michálková, Romana, Stružinská, Ivana, Drozenová, Jana, Fabián, Pavel, Hausnerová, Jitka, Laco, Jan, Matěj, Radoslav, Škapa, Petr, Švajdler, Marián, Špůrková, Zuzana, Méhes, Gábor, Dundr, Pavel, Němejcová, Kristýna
Zdroj: Virchows Archiv: European Journal of Pathology; Oct2023, Vol. 483 Issue 4, p509-516, 8p
Abstrakt: Preferentially expressed antigen of melanoma (PRAME) is a cancer/testis antigen selectively expressed in somatic tissues and various solid malignant tumors and is associated with poor prognostic outcome. Our research aimed to comprehensively compare its expression in a large cohort of tubo-ovarian epithelial tumors and examine its correlation with our clinico-pathologic data, as well as to assess its potential use in diagnostics and therapy. We examined 485 cases of epithelial tubo-ovarian tumors including 107 clear cell carcinomas (CCC), 52 endometroid carcinomas (EC), 103 high grade serous carcinomas (HGSC), 119 low grade serous carcinomas (LGSC)/micropapillary variant of serous borderline tumors (mSBT), and 104 cases of mucinous carcinomas (MC)/mucinous borderline tumors (MBT). The immunohistochemical analysis was performed using TMAs. The highest levels of expression were seen in EC (60%), HGSC (62%), and CCC (56%), while expression in LGSC/mSBT (4%) and MC/MBT (2%) was rare. The clinico-pathologic correlations and survival analysis showed no prognostic significance. The results of our study showed that PRAME is neither prognostic nor a suitable ancillary marker in the differential diagnosis of tubo-ovarian epithelial tumors. Nevertheless, knowledge about the PRAME expression may be important concerning its potential predictive significance, because targeting PRAME as a potential therapeutic option is currently under investigation. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index