DISEASES

Disease-gene associations mined from literature

Human genes for CD40 ligand deficiency

CD40 ligand deficiency [DOID:0060022]

A combined T cell and B cell immunodeficiency that is a X-linked immunodeficiency with hyperimmunoglobulin M (XHIM) affecting isotype switching and is caused by the absence of CD40 ligand which is normally expressed on activated CD4+ T cells. Individuals with this mutation are unable to switch from IgM to IgG, IgA and IgE.

Synonyms:  CD40 ligand deficiency,  DOID:0060022,  HIGMX-1,  HIGMX1