PT  - JOURNAL ARTICLE
AU  - Badary, Dalia M
AU  - Abou-Taleb, Hisham
TI  - 2022-RA-710-ESGO Vitamin D receptor and cellular retinol-binding protein-1 immunohistochemical expression in normal, hyperplastic and neoplastic endometrium: Possible diagnostic and therapeutic implications
AID  - 10.1136/ijgc-2022-ESGO.228
DP  - 2022 Oct 01
TA  - International Journal of Gynecologic Cancer
PG  - A105--A105
VI  - 32
IP  - Suppl 2
4099  - http://ijgc.bmj.com/content/32/Suppl_2/A105.1.short
4100  - http://ijgc.bmj.com/content/32/Suppl_2/A105.1.full
SO  - Int J Gynecol Cancer2022 Oct 01; 32
AB  - Introduction/Background We conducted this study to assess the effect of VDR and CRBP-1 immunohistochemical expression on the endometrium and to explore their role in endometrial cancer carcinogenesisMethodology This study comprised two hundred paraffin-embedded endometrial tissue samples diagnosed as 42 and 63 proliferative and secretory endometrium respectively, 45 endometrial hyperplasias with atypia and 50 endometrial carcinomas (25 low-grade and 25 high-grade endometrial carcinomas). The immunohistochemical method was done to determine the expression of VDR and CRBP-1.Results VDR was strongly expressed in 8 (17.8%) cases with endometrial hyperplasia, 15 (60%) cases with low grade endometrial carcinoma, and 22 (88%) cases with high-grade endometrial carcinoma. While CRPB1 overexpression was noted in cases with proliferative endometrium, secretory endometrium and endometrial hyperplasia with atypia, 37 (88.1%), 56 (88.9%) and 3 (6.7%) cases respectively and all malignant cases showed negative expression.Conclusion Increased VDR expression and reduced CRBP-1 expression are associated with malignant features of the endometrium with a significant statistical difference of immunoreactivity between groups of normal endometrium, hyperplastic changes & carcinoma. Our data suggested that increased VDR expression is partly associated with endometrial cancers through a premalignant phase. Also, increased VDR and reduced CRBP-1 expression are associated with the progression of endometrial carcinoma with higher grades.