Hemophagocytic lymphohistiocytosis (HLH; hemophagocytic syndrome) is a  rare syndrome of potentially fatal, uncontrolled hyperinflammation.  Allogeneic hematopoietic stem cell transplantation is indicated in  primary, recurrent or progressive HLH, but information about its  outcomes in the adult population is limited.

Rafal works at the Department of Hematology, Transplantation and  Internal Medicine, Medical University of Warsaw, Warsaw, Poland. And he  is part of YoungEHA.