Department of Hematology The Affiliated Hospital of Yangzhou University Yangzhou University Yangzhou 225000 Jiangsu Province China;
Gene Sequencing Laboratory Tianjin SINO-US-Diagnostics Co.Ltd Tianjin 300000 China;
Flow Cytometry Laboratory Tianjin SINO-US-Diagnostics Co.Ltd Tianjin 300000 China;
Department of Hematology The Affiliated Hospital of Yangzhou University Yangzhou University Yangzhou 225000 Jiangsu Province China;
Department of Hematology The Affiliated Hospital of Yangzhou University Yangzhou University Yangzhou 225000 Jiangsu Province China;
Department of Hematology The Affiliated Hospital of Yangzhou University Yangzhou University Yangzhou 225000 Jiangsu Province China;
Familial hemophagocytic lymphohistiocytosis; Perforin; PRF1 mutation; Lateonset; Case report;