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  • Title: [Severe congenital neutropenia: trends in diagnosis and therapy].
    Author: Zeidler C, Schwinzer B, Welte K.
    Journal: Klin Padiatr; 2000; 212(4):145-52. PubMed ID: 10994541.
    Abstract:
    Severe congenital neutropenia (CN; Kostmann syndrome) is a hematologic disorder characterized by a maturation arrest of myelopoiesis at the promyelocyte/myelocyte stage of development. This arrest results in severe neutropenia with absolute neutrophil counts (ANC) less than 0.2 x 10(9)/l associated with severe systemic bacterial infections from early infancy. Data on over 300 patients with CN collected by the Severe Chronic Neutropenia International Registry (SCNIR) since 1994 indicate that > 90% of these patients respond to recombinant human granulocyte-colony stimulating factor (rHuG-CSF) treatment with an ANC > 1.0 x 10(9)/l. In these patients rHuG-CSF is required daily as subcutaneous injection with individual doses ranging between 0.27 and 120 mcg/kg/day to maintain ANC above 1.0 x 10(9)/l. Adverse events documented in this group of patients include splenomegaly, thrombocytopenia, osteoporosis and malignant transformation into MDS/leukemia. If and how rHuG-CSF treatment impacts on these adverse events remains unclear since there are no historical controls for comparison. For those patients who are refractory to rHuG-CSF treatment and continue to have severe and often life-threatening bacterial infections, hematopoietic stem cell transplantation (HSCT) is still the only currently available treatment.
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