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Sintilimab treatment for chronic active Epstein-Barr virus infection and Epstein-Barr virus-associated hemophagocytic lymphohistiocytosis in children. 2023

Ruyue Chen, and Qiang Lin, and Yun Zhu, and Yunyan Shen, and Qinying Xu, and Hanyun Tang, and Ningxun Cui, and Lu Jiang, and Xiaomei Dai, and Weiqing Chen, and Xiaozhong Li
Department of Nephrology and Immunology, Children's Hospital of Soochow University, No.303 Jing De Road, Gusu District, Suzhou, 215002, Jiangsu, China.

Chronic active Epstein-Barr virus infection (CAEBV) and Epstein-Barr virus-associated hemophagocytic lymphohistiocytosis (EBV-HLH) are rare but life-threatening progressive diseases triggered by EBV infection. Glucocorticoid/immunosuppressants treatment is temporarily effective; however, most patients relapse and/or progress. Hematopoietic stem cell transplantation (HSCT) is a potentially curative therapy; however, there are risks of transplantation-associated complications. Currently there is no standard treatment for CAEBV and EBV-HLH. Programmed death protein 1 (PD-1) inhibitors have achieved a high response in many EBV-related diseases. Sintilimab (a recombinant human IgG4 monoclonal antibody against PD-1) disrupts the interaction between PD-1 and its ligand, leading to T cell reinvigoration. A retrospective analysis was performed on three children with CAEBV or EBV-HLH in the Children's Hospital of Soochow University between 12 December 2020 and 28 November 2022. The efficacy of sintilimab was evaluated. Three patients, including two males and one female, were analyzed. Among them, two children were diagnosed with CAEBV with intermittent fever for more than four years, and one child was diagnosed with EBV-HLH. After sintilimab treatment and a mean follow-up of 17.1 months (range 10.0-23.3 months), patients 1 and 3 achieved a complete clinical response and patient 2 achieved a partial clinical response. All three children showed a > 50% decrease in EBV-DNA load in both blood and plasma. EBV-DNA copies in sorted T, B, and NK cells were also markedly decreased after sintilimab treatment. Our data supported the efficacy of PD-1 targeted therapy in certain patients with CAEBV and EBV-HLH, and suggested that sintilimab could provide a cure for these diseases, without HSCT. More prospective studies and longer follow-up are needed to confirm these conclusions.

UI MeSH Term Description Entries
D008297 Male Males
D011446 Prospective Studies Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. Prospective Study,Studies, Prospective,Study, Prospective
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D004854 Herpesvirus 4, Human The type species of LYMPHOCRYPTOVIRUS, subfamily GAMMAHERPESVIRINAE, infecting B-cells in humans. It is thought to be the causative agent of INFECTIOUS MONONUCLEOSIS and is strongly associated with oral hairy leukoplakia (LEUKOPLAKIA, HAIRY;), BURKITT LYMPHOMA; and other malignancies. Burkitt Herpesvirus,Burkitt Lymphoma Virus,E-B Virus,EBV,Epstein-Barr Virus,Human Herpesvirus 4,Infectious Mononucleosis Virus,Burkitt's Lymphoma Virus,HHV-4,Herpesvirus 4 (gamma), Human,Burkitts Lymphoma Virus,E B Virus,E-B Viruses,Epstein Barr Virus,Herpesvirus, Burkitt,Infectious Mononucleosis Viruses,Lymphoma Virus, Burkitt,Mononucleosis Virus, Infectious,Mononucleosis Viruses, Infectious
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D051359 Lymphohistiocytosis, Hemophagocytic A group of related disorders characterized by LYMPHOCYTOSIS; HISTIOCYTOSIS; and hemophagocytosis. The two major forms are familial and reactive. Familial Hemophagocytic Lymphocytosis,Hemophagocytic Lymphohistiocytosis, Familial,Hemophagocytic Syndrome, Infection-Associated,Hemophagocytic Syndrome, Reactive,Hemophagocytic Syndromes,Reactive Hemophagocytic Syndrome,Erythrophagocytic Lymphohistiocytosis, Familial,Familial Erythrophagocytic Lymphohistiocytosis,Familial Hemophagocytic Histiocytosis,Familial Hemophagocytic Lymphohistiocytosis,Familial Hemophagocytic Reticulosis,Familial Histiocytic Reticulosis,Hemophagocytic Lymphohistiocytosis Familial -1,Hemophagocytic Lymphohistiocytosis, Familial, 1,Hemophagocytic Reticulosis, Familial,Hemophagocytic Syndrome,Primary Hemophagocytic Hymphohistiocytosis,Primary Hemophagocytic Lymphohistiocytosis,Reticulosis, Familial Histiocytic,Erythrophagocytic Lymphohistiocytoses, Familial,Familial Erythrophagocytic Lymphohistiocytoses,Familial Hemophagocytic Histiocytoses,Familial Hemophagocytic Lymphocytoses,Familial Hemophagocytic Lymphohistiocytoses,Familial Hemophagocytic Reticuloses,Familial Histiocytic Reticuloses,Hemophagocytic Histiocytoses, Familial,Hemophagocytic Histiocytosis, Familial,Hemophagocytic Hymphohistiocytoses, Primary,Hemophagocytic Hymphohistiocytosis, Primary,Hemophagocytic Lymphocytoses, Familial,Hemophagocytic Lymphocytosis, Familial,Hemophagocytic Lymphohistiocytoses,Hemophagocytic Lymphohistiocytoses, Familial,Hemophagocytic Lymphohistiocytoses, Primary,Hemophagocytic Lymphohistiocytosis,Hemophagocytic Lymphohistiocytosis Familial 1,Hemophagocytic Lymphohistiocytosis, Primary,Hemophagocytic Reticuloses, Familial,Hemophagocytic Syndrome, Infection Associated,Histiocytic Reticuloses, Familial,Histiocytic Reticulosis, Familial,Histiocytoses, Familial Hemophagocytic,Histiocytosis, Familial Hemophagocytic,Hymphohistiocytoses, Primary Hemophagocytic,Hymphohistiocytosis, Primary Hemophagocytic,Infection-Associated Hemophagocytic Syndrome,Lymphocytoses, Familial Hemophagocytic,Lymphocytosis, Familial Hemophagocytic,Lymphohistiocytoses, Familial Erythrophagocytic,Lymphohistiocytoses, Familial Hemophagocytic,Lymphohistiocytoses, Hemophagocytic,Lymphohistiocytoses, Primary Hemophagocytic,Lymphohistiocytosis, Familial Erythrophagocytic,Lymphohistiocytosis, Familial Hemophagocytic,Lymphohistiocytosis, Primary Hemophagocytic,Primary Hemophagocytic Hymphohistiocytoses,Primary Hemophagocytic Lymphohistiocytoses,Reticuloses, Familial Hemophagocytic,Reticuloses, Familial Histiocytic,Reticulosis, Familial Hemophagocytic
D061026 Programmed Cell Death 1 Receptor An inhibitory T-lymphocyte receptor that has specificity for CD274 ANTIGEN and PROGRAMMED CELL DEATH 1 LIGAND 2 PROTEIN. Signaling by the receptor limits T cell proliferation and INTERFERON GAMMA synthesis. The receptor also may play an essential role in the regulatory pathway that induces PERIPHERAL TOLERANCE. PD-1 Protein,Programmed Cell Death 1 Protein,Programmed Cell Death Protein 1,Antigens, CD279,CD279 Antigen,PD-1 Receptor,PD1 Receptor,Antigen, CD279,CD279 Antigens,PD 1 Protein,PD 1 Receptor,Receptor, PD-1,Receptor, PD1
D020031 Epstein-Barr Virus Infections Infection with human herpesvirus 4 (HERPESVIRUS 4, HUMAN); which may facilitate the development of various lymphoproliferative disorders. These include BURKITT LYMPHOMA (African type), INFECTIOUS MONONUCLEOSIS, and oral hairy leukoplakia (LEUKOPLAKIA, HAIRY). EBV Infections,Epstein-Barr Virus Infection,Herpesvirus 4 Infections, Human,Human Herpes Virus 4 Infections,Human Herpesvirus 4 Infections,Infections, EBV,Infections, Epstein-Barr Virus,EBV Infection,Epstein Barr Virus Infection,Epstein Barr Virus Infections,Infection, EBV,Infection, Epstein-Barr Virus,Virus Infection, Epstein-Barr,Virus Infections, Epstein-Barr

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