" /> Agammaglobulinemia, X-linked - CISMeF





Preferred Label : Agammaglobulinemia, X-linked;

Symbol : XLA;

CISMeF acronym : AGMX1; IMD1; XLA;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Bruton-type agammaglobulinemia; Agammaglobulinemia, X-linked, type 1; Immunodeficiency 1; AGMX1; IMD1;

Included titles and symbols : Hypogammaglobulinemia, X-linked;

Description : X-linked agammaglobulinemia is an immunodeficiency characterized by failure to produce mature B lymphocytes and associated with a failure of Ig heavy chain rearrangement. The defect in this disorder resides in BTK, also known as BPK or ATK, a key regulator in B-cell development (Rawlings and Witte, 1994). The X-linked form accounts for approximately 85 to 90% of cases of the disorder. Also see 300310. The remaining 15% of cases constitute a heterogeneous group of autosomal disorders (Lopez Granados et al., 2002; Ferrari et al., 2007). See agammaglobulinemia-1 (AGM1; 601495) for a discussion of genetic heterogeneity of the autosomal forms of agammaglobulinemia.;

Inheritance : X-linked recessive;

Molecular basis : Caused by mutation in the Bruton agammaglobulinemia tyrosine kinase gene (BTK, 300300.0001);

Neoplasia : Increased incidence of rectosigmoid cancer;

Laboratory abnormalities : Absent or severely reduced levels of serum immunoglobulins;

Prefixed ID : #300755;

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17/05/2024


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