Role of glutathione S-transferase P1 polymorphism in early transplant complications in patients undergoing allogeneic stem cell transplantation.
2021
Introduction Complications in patients undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT) cause serious morbidity and mortality. Predicting patients at risk in advance and changing the symptomatic care and/or preparation regimen according to this risk assessment have been emphasized recently. Several single-nucleotide polymorphisms have been studied, and some were found to be responsible for early complications. Glutathione S-transferase P1 (GSTP1) is an enzyme involved in the detoxification process that reduces oxidative stress by reducing the number of free oxygen radicals. Aim This study aimed to investigate the relationship between GSTP1 polymorphism and early complications of allo-HSCT, iron parameters, overall survival (OS), and transplantation-related mortality (TRM). Materials and methods A total of 50 patients diagnosed with acute myeloid leukemia (n = 23) or acute lymphoblastic leukemia (n = 27) who underwent allo-HSCT between May 2008 and February 2011 at Gazi University Faculty of Medicine, Stem Cell Transplantation Unit, were included. Results Of the 50 patients, 24 (48%) were women and 26 (52%) were men. The median age of the patients was 26 (16-74) years. GSTP1 polymorphism was detected in 23 (46%) patients, and 27 (54%) had no polymorphism (wild type). The two groups were compared in terms of early toxicity after transplantation, according to the preparation regimen. The group with GSTP1 polymorphism was found to have a high transferrin saturation index (P 0.05). OS and TRM were higher in the GSTP1 polymorphism group, but no statistical difference was found between the two groups (P > 0.05). Conclusions TSI was higher in the GSTP1 polymorphism group. GSTP1 polymorphism had no effect on early transplantation complications. Although the OS and TRM ratios were higher in the GSTP1 polymorphism group, no statistically significant difference was found between the groups. Further studies with larger sample size are needed.
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