Initial liver involvement in acute GVHD is predictive for nonrelapse mortality

Area of Science:

• Hematopoietic stem cell transplantation
• Immunology
• Oncology

Background:

• Current grading systems for acute graft-versus-host disease (GVHD) do not accurately predict prognosis at onset.
• There is a need to identify early indicators of poor survival in GVHD patients.

Purpose of the Study:

• To evaluate potential predictors of overall survival at the onset of acute GVHD.
• To identify early clinical factors associated with non-relapse mortality (NRM) in allogeneic stem cell transplant recipients.

Main Methods:

• Analysis of 142 allogeneic hematopoietic stem-cell transplant recipients with acute GVHD post-myeloablative conditioning.
• Proportional hazard models were used to identify risk factors for NRM.

Main Results:

• Significant risk factors for NRM included non-HLA matched sibling donors, absence of methotrexate prophylaxis, initial liver involvement, delayed GVHD onset (>24 days), nonhyperacute GVHD, and steroid-refractory GVHD.
• Multivariate analysis identified initial liver involvement (HR 2.45) and non-HLA identical sibling donor (HR 1.58) as independent predictors of NRM.

Conclusions:

• Initial liver involvement is a critical clinical predictor of outcomes in acute GVHD.
• These findings suggest that early identification of liver involvement and donor type can inform patient management and improve survival after stem cell transplantation.