Primary:~To evaluate the proportion of pediatric patients undergoing hematopoietic cell transplant (HCT) who develop endotheliopathies (SOS, TMA, DAH and IPS) and/or MODS within 100 days of such therapies.~To evaluate the proportion of pediatric patients undergoing hematopoietic cell transplant (HCT) who experience abnormal levels of circulating angiogenic, vascular permeability and inflammatory factors within 100 days post HCT-CT in the setting of endotheliopathies.~Secondary/Exploratory Objective(s):~To determine the impact of endotheliopathies in the HCT setting on the overall survival.~To assess the efficacy of specific prophylaxis and treatment strategies directed at endotheliopathies (SOS, TMA, DAH and IPS) post-HCT among enrolled children on overall survival.~To assess whether exposure to immunotherapies (CAR-T, PD-1 Inhibitors, bispecific T-cell engager (BiTE) antibodies and antibody drug conjugates) prior to HCT affects post-HCT outcomes (endotheliopathies and MODS).
This is a prospective international multi-center registry and biorepository trial of children and adolescents/young adults (AYA) undergoing hematopoietic cell transplantation (HCT) to assess the impact of endotheliopathies in the HCT setting as a contributor of significant morbidity and mortality.