Rotavirus-associated hemophagocytic lymphohistiocytosis (HLH) after hematopoietic stem cell transplantation for familial HLH.

Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening disorder of immune regulation. HLH consists of two forms: familial and acquired, the latter which occurs in association with infection, malignancy, rheumatic disease and acquired immune deficiency. Herein, we report a case of acquired HLH in a child who had received allogeneic hematopoietic stem cell transplantation for familial HLH with UNC13D mutation. Based on microbiology, only rotavirus was identified as a possible organism triggering HLH. The patient's fulminant clinical course included acute respiratory failure, a sepsis-like pattern, disseminated intravascular coagulopathy, and rhabdomyolysis, leading to multiorgan failure and death from septic shock.