Thiotepa Incorporating TBI/Cy Conditioning Regimen for EBV-HLH With Central Nervous System Involvement

EBV-HLH is the most common in virus-associated hemophagocytic syndrome (VAHS). There are no uniform clinical criteria for the diagnosis of CNS-HLH. And there is still a lack of international consensus on the treatment for CNS-HLH. Following allogeneic HSCT after HLH induction therapy is recommended for CNS-HLH. One of the major factors influencing the transplantation effect is conditioning. Therefore, we conduct a prospective clinical study to explore the efficacy and safety of thiotepa incorporating TBI/Cy conditioning regimen followed by allogeneic hematopoietic stem cell transplantation for EBV-HLH with central nervous system involvement.