Successful Management of Severe Hepatic Acute Graft‐Versus‐Host Disease After Allogeneic Hematopoietic Stem Cell Transplantation in a Child With β‐Thalassemia Major: Clinical Lessons From Early Therapeutic Escalation

Severe hepatic acute graft‐versus‐host disease can occur early after allogeneic hematopoietic stem cell transplantation without skin involvement, presenting with rapidly progressive cholestatic liver dysfunction. Early recognition and prompt escalation to multimodal immunosuppressive therapy achieve complete biochemical remission and durable hematopoietic recovery, highlighting the crucial role of early, multidisciplinary pediatric management.