• Haider Nisar, Memoona Khan, Tariq Azam Khattak, Tariq Ghafoor, and Qamar Un Nisa Chaudhry.
• Dr. Haider Nisar, Consultant Pediatrician, Resident Clinical Hematology, Armed Forces Bone Marrow Transplant Center, National Institute of Bone Marrow Transplant Center, Rawalpindi, Punjab, Pakistan.
• Pak J Med Sci. 2024 Jan 1; 40 (3Part-II): 259264259-264.

ObjectivesHepatic Veno occlusive disease (VOD), also known as sinusoidal obstruction syndrome (VOD/SOS), is a post-transplant life threatening complication. In this study, we aimed to discuss the incidence, management and outcome of VOD in post allogenic transplant patients of beta thalassemia major (BTM).MethodsA prospective study was conducted in Armed Forces Bone Marrow Transplant Center, between 2001-2022. A total of 385 fully Human Leucocyte Antigen (HLA) matched BTM patients, with Ursodeoxycholic acid for prophylaxis, were included in the study. Incidence of VOD was calculated through cumulative incidence estimates. Chi square test and Mann Whitney test were used to compare discrete and continuous variables respectively. VOD was diagnosed and graded according to European Society for Blood and Marrow Transplantation EBMT Pediatric diagnostic criteria. Risk factors for VOD were grouped as recipient, transplant and donor related. Univariate analysis was performed by log-rank test. All patients who developed VOD were managed primarily with fluid restriction and strict input output monitoring. Statistical analyses were performed using SPSS v 25.0.ResultsOut of 385 transplant patients, forty developed VOD. Median time from date of transplant till onset of VOD was 14 days (range 6-30). Cumulative incidence of all grade VOD was 10.39% (95% CI, 7-14). Eleven out of 40 patients who developed VOD died. Cumulative incidence of Transplant related mortality (TRM) for patients with and VOD was 20.5% (95% CI, 16.6-25.1) vs 27.5% (95% CI, 16.1-42) (p value 0.318) respectively. Among risk factors, age of recipient and fibrosis (p value of 0.04 and 0.000 respectively) were found to be significantly associated with VOD.ConclusionsCareful selection of transplant candidates before transplant can help reduce the incidence of VOD.Copyright: © Pakistan Journal of Medical Sciences.

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