Novel ELANE Gene Mutation in a Korean Girl with Severe Congenital Neutropenia
نویسندگان
چکیده
Severe congenital neutropenia is a heterozygous group of bone marrow failure syndromes that cause lifelong infections. Mutation of the ELANE gene encoding human neutrophil elastase is the most common genetic alteration. A Korean female pediatric patient was admitted because of recurrent cervical lymphadenitis without abscess formation. She had a past history of omphalitis and isolated neutropenia at birth. The peripheral blood showed a markedly decreased absolute neutrophil count, and the bone marrow findings revealed maturation arrest of myeloid precursors at the promyelocyte to myelocyte stage. Her direct DNA sequencing analysis demonstrated an ELANE gene mutation (c.607G > C; p.Gly203Arg), but her parents were negative for it. She showed only transient response after subcutaneous 15 µg/kg/day of granulocyte colony stimulating factor administration for six consecutive days. During the follow-up observation period, she suffered from subsequent seven febrile illnesses including urinary tract infection, septicemia, and cellulitis.
منابع مشابه
Different Clinical Phenotypes in Familial Severe Congenital Neutropenia Cases with Same Mutation of the ELANE Gene
Severe congenital neutropenia (SCN) is a heterogeneous group of disorders with a defect in granulopoiesis causing marked neutropenia and severe bacterial infections. A 17-month-old girl (patient 1) was admitted due to cervical lymphadenitis caused by methicillin-resistant Staphylococcus aureus, with neutropenia. She had Pseudomonas aeruginosa sepsis and peritonitis with perforated appendicitis ...
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