RT Journal Article T1 Effect of Vitamin D on Graft-versus-Host Disease. A1 Rodríguez-Gil, Alfonso A1 Carrillo-Cruz, Estrella A1 Marrero-Cepeda, Cristina A1 Rodríguez, Guillermo A1 Pérez-Simón, José A K1 calcifediol K1 calcitriol K1 graft-versus-host disease K1 vitamin D K1 vitamin D receptor (VDR) AB The different cell subsets of the immune system express the vitamin D receptor (VDR). Through the VDR, vitamin D exerts different functions that influence immune responses, as previously shown in different preclinical models. Based on this background, retrospective studies explored the impacts of vitamin D levels on the outcomes of patients undergoing allogeneic hematopoietic stem-cell transplantation, showing that vitamin D deficiency is related to an increased risk of complications, especially graft-versus-host disease. These results were confirmed in a prospective cohort trial, although further studies are required to confirm this data. In addition, the role of vitamin D on the treatment of hematologic malignancies was also explored. Considering this dual effect on both the immune systems and tumor cells of patients with hematologic malignancies, vitamin D might be useful in this setting to decrease both graft-versus-host disease and relapse rates. SN 2227-9059 YR 2022 FD 2022-04-24 LK http://hdl.handle.net/10668/20827 UL http://hdl.handle.net/10668/20827 LA en DS RISalud RD Apr 12, 2025