Autosomal-dominant B-cell deficiency with alopecia due to a mutation in NFKB2 that results in nonprocessable p100
Journal Publication ResearchOnline@JCUAbstract
Most genetic defects that arrest B-cell development in the bone marrow present early in life with agammaglobulinemia, whereas incomplete antibody deficiency is usually associated with circulating B cells. We report 3 related individuals with a novel form of severe B-cell deficiency associated with partial persistence of serum immunoglobulin arising from a missense mutation in NFKB2. Significantly, this point mutation results in a D865G substitution and causes a failure of p100 phosphorylation that blocks processing to p52. Severe B-cell deficiency affects mature and transitional cells, mimicking the action of rituximab. This phenotype appears to be due to disruption of canonical and noncanonical nuclear factor κB pathways by the mutant p100 molecule. These findings could be informative for therapeutics as well as immunodeficiency.
Journal
Blood
Publication Name
N/A
Volume
124
ISBN/ISSN
1528-0020
Edition
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Issue
19
Pages Count
9
Location
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Publisher
The American Society of Hematology
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Publisher Location
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Date
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EISSN
N/A
DOI
10.1182/blood-2014-06-578542