en بیوشیمی Biochemistry مقالات اصلی Original Article <div style="text-align: justify;"><strong><em>Background:</em></strong> The discovery of biomarkers to predict the development of complications associated with hematopoietic stem cell transplantation (HSCT) offers a potential avenue for the early identification and treatment of these life-threatening consequences. Serum lactate dehydrogenase (sLDH) has been identified as a potential biomarker for determining the outcome of allogenic HSCT (allo-HSCT).<br> <br> <strong><em>Methods:</em></strong> A retrospective study was performed using data collected from 204 allo-HSCT recipient patients to examine the predictive value of sLDH levels pre- and post-allo-HSCT on patient survival, graft-versus-host-disease (GVHD) incidence, and time to platelet/white blood cells (WBC) engraftment.<br> <br> <strong><em>Results:</em></strong> Our findings show that neither pre- (p<em>= </em>0.61) nor post-transplantation (p= 0.55) sLDH levels were associated with GVHD incidence. However, elevated sLDH levels pre- and post-transplantation (&ge; 386 and &ge; 409 IU/mL, respectively) were found to be adverse risk factors for patient survival (p= 0.16, p= 0.20, respectively). Furthermore, a median sLDH level&ge; 400 IU/mL from day +5 to day +15 post-transplantation had a significant positive association with enhanced time to platelet and white blood cell (WBC) engraftment, compared to patients with sLDH levels < 400 IU/mL (p< 0.001).<br> <br> <strong><em>Conclusions:</em></strong> Our data suggests that high sLDH levels pre- and post-allo-HSCT could be considered a predictor of poor patient survival. Furthermore, high levels of sLDH days 5-15 post-allo-HSCT could be associated with improved time to platelet and WBC engraftment; however, this appears to come at the cost of increased mortality risk.</div> Engraftment, Graft versus host disease, Hematopoietic stem cell transplantation, Lactate dehydrogenase. 204 215 http://rbmb.net/browse.php?a_code=A-10-632-1&slc_lang=en&sid=1 Elham Roshandel 100319475328460012614 100319475328460012614 No Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Sayeh Parkhideh drsayehparkhideh@yahoo.com 100319475328460012615 100319475328460012615 Yes Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Haniyeh Ghaffari Nazari 100319475328460012616 100319475328460012616 No Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Mahshid Mehdizadeh 100319475328460012617 100319475328460012617 No Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Hossein Bonakchi 100319475328460012618 100319475328460012618 No Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Ghazaleh Sankanian 100319475328460012619 100319475328460012619 No Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Abbas Hajifathali 100319475328460012620 100319475328460012620 No Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.