TY - JOUR T1 - Protective Desmoplasia in Pancreatic Adenocarcinoma: High Vitamin D Receptor Expression and Collagen Content JF - Anticancer Research JO - Anticancer Res SP - 6457 LP - 6464 DO - 10.21873/anticanres.14667 VL - 40 IS - 11 AU - ADI VAKNINE BAHAT AU - SHOSHI BAR-DAVID AU - ABIGAIL BROOKS AU - ASAF AIZIC AU - ORLI GREENBERG AU - IDO WOLF AU - JOSEPH M. KLAUSNER AU - GUY LAHAT AU - ERAN NIZRI Y1 - 2020/11/01 UR - http://ar.iiarjournals.org/content/40/11/6457.abstract N2 - Background/Aim: Vitamin D receptor (VDR) has been shown to suppress desmoplasia in pancreatic ductal adenocarcinoma (PDAC). Our aim was to assess the clinical effects of VDR expression and its correlation with collagen content in the desmoplasia of PDAC patients. Patients and Methods: This is a retrospective analysis of 127 patients with peritumoral desmoplasia resected for PDAC. VDR expression and collagen content were assessed by immunohistochemistry and correlated with clinical outcome. Results: Patients were classified into those with high and those with low VDR expression. High VDR expression was associated with improved overall survival (OS) in localized disease (N0) (median= 33; 95%CI=26.4-39.6 vs. 18; 15.5-20.5 months, p=0.01). Patients with high vs. low collagen content had improved OS [34, (range=22.3-45.6 months) vs. 17, (range=14.4-19.6 months), p<0.001]. The number of VDR+ cells was the same for patients with either high or low collagen content. Conclusion: Protective desmoplasia is associated with increased VDR expression and collagen content. ER -