Kostmann syndrome: Difference between revisions

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imported>Howard C. Berkowitz
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imported>Howard C. Berkowitz
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promyelocytic stage of differentiation and
promyelocytic stage of differentiation and
low levels of mature neutrophils in peripheral
low levels of mature neutrophils in peripheral
blood." It was generally lethal before treatment with [[granulocyte colony-stimulating factor]] was available, although some individuals were protected with antibiotics.<ref>{{citation
blood." It was generally lethal before treatment with [[granulocyte colony-stimulating factor]] was available, although some individuals were protected with antibiotics.<ref name=Carlsson>{{citation
  | url = http://www.haematologica.org/cgi/reprint/91/5/589
  | url = http://www.haematologica.org/cgi/reprint/91/5/589
  | journal = Haematologica  
  | journal = Haematologica  
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  | title = Neutrophil elastase and granulocyte colony-stimulating factor receptor mutation analyses and leukemia evolution in severe congenital neutropenia patients belonging to the original Kostmann family in northern Sweden
  | title = Neutrophil elastase and granulocyte colony-stimulating factor receptor mutation analyses and leukemia evolution in severe congenital neutropenia patients belonging to the original Kostmann family in northern Sweden
}}</ref>
}}</ref>
==Genetics==
As mentioned, the disease was first described in a group with considerable intermarriage. It had been believed to be an [[autosomal recessive]] disorder, but two suggested genes, ELA-2, the neutrophil elastase gene, or G-CSFR, which defines the [[G-CSF]] receptor, are normal in the survivors with the disease. One patient had an ELA-2 defect but her parents did not, suggesting a spontaneous mutation.<ref name=Carlsson/>
==Differential diagnosis==
==Differential diagnosis==
To be considered are:<ref>{{citation
To be considered are:<ref>{{citation
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  | date = 11 November 2008
  | date = 11 November 2008
  | journal = eMedicine:  Pediatrics: General Medicine > Allergy & Immunology}}</ref>
  | journal = eMedicine:  Pediatrics: General Medicine > Allergy & Immunology}}</ref>
{{col-begin}}
{{col-break|width=50%}}
{|
|- valign=top
|
*[[Agammaglobulinemia]]
*[[Agammaglobulinemia]]
*[[Severe Combined Immunodeficiency Disease]]
*[[Severe combined immunodeficiency disease]]
*[[Autoimmune neutropenia]]
*[[Autoimmune neutropenia]]
*[[Chronic Benign Neutropenia]]
*[[Chronic benign neutropenia]]
*[[Shwachman-Diamond Syndrome]]
*[[Shwachman-Diamond syndrome]]
*[[Glycogen-Storage Disease Type I]]
*[[Glycogen-storage disease Type I]]
*[[Methylmalonic Acidemia]]
{{col-break|width=50%}}
*[[Pearson Syndrome]]
*[[Methylmalonic acidemia]]
*[[Pearson syndrome]]
*[[Cyclic neutropenia]]
*[[Cyclic neutropenia]]
*[[Chediak-Higashi syndrome]]
*[[Chediak-Higashi syndrome]]
*[[Myelokathexis]]
*[[Myelokathexis]]
|}
==References==
==References==
{{reflist|2}}
{{reflist|2}}

Revision as of 17:42, 30 July 2010

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First described in 1956,[1] Kostmann syndrome, also called congenital neutropenia, is characterized as "is characterized by an arrest of the maturation of neutrophil precursors at the promyelocytic stage of differentiation and low levels of mature neutrophils in peripheral blood." It was generally lethal before treatment with granulocyte colony-stimulating factor was available, although some individuals were protected with antibiotics.[2]

Genetics

As mentioned, the disease was first described in a group with considerable intermarriage. It had been believed to be an autosomal recessive disorder, but two suggested genes, ELA-2, the neutrophil elastase gene, or G-CSFR, which defines the G-CSF receptor, are normal in the survivors with the disease. One patient had an ELA-2 defect but her parents did not, suggesting a spontaneous mutation.[2]

Differential diagnosis

To be considered are:[3]

References

  1. Kostmann R. Infantile genetic agranulocytosis. A new recessive lethal disease in man (1956), at 1-78
  2. 2.0 2.1 Carlsson G et al. , "Neutrophil elastase and granulocyte colony-stimulating factor receptor mutation analyses and leukemia evolution in severe congenital neutropenia patients belonging to the original Kostmann family in northern Sweden", Haematologica 91 (5): 589
  3. Michael S Tankersley (11 November 2008), "Kostmann Disease: differential diagnosis and workup", eMedicine: Pediatrics: General Medicine > Allergy & Immunology