A Rare Case of Activated Phosphoinositide 3-Kinase Delta Syndrome (APDS) Presenting With Hemophagocytosis Complicated With Hodgkin Lymphoma.
J Pediatr Hematol Oncol
; 42(2): 156-159, 2020 03.
Article
em En
| MEDLINE
| ID: mdl-31033788
ABSTRACT
Gain of function mutations in the p110δ catalytic subunit of the phosphatidylinositol-3-OH kinase (PIK3CD) classified as activated phosphoinositide 3-kinase delta syndrome (APDS) are the cause of a primary immunodeficiency characterized by recurrent sinopulmonary infections, and lymphoproliferation. Previously, autoimmunity and Epstein-Barr virus-related B-cell lymphoma have been documented for patients with APDS; here, we present a case that extends the picture, as the patient shows the full diagnostic criteria of hemophagocytic lymphohistiocytosis at 6 months of age. He experienced Hodgkin lymphoma as a 2.5-year-old baby. Next-generation sequencing returned a de novo heterozygous missense variant in PIK3CD (LRG_191t1 c.3061G>A; p.Glu1021Lys), confirming the primary immunodeficiency. After 2 courses of ifosfamide, cisplatin, and etoposide combined with brentuximab, the patient successfully underwent allogeneic hematopoietic stem cell transplantation from his HLA full matched sister, and he has been well for 18 months after that. The hematologist treating Hodgkin lymphoma and/or hemophagocytic lymphohistiocytosis should be vigilant about the possible underlying immune deficiency, and they should consider APDS in their differential diagnosis.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Doença de Hodgkin
/
Linfo-Histiocitose Hemofagocítica
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Classe I de Fosfatidilinositol 3-Quinases
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Doenças da Imunodeficiência Primária
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Mutação
Tipo de estudo:
Prognostic_studies
Limite:
Humans
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Infant
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Male
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article