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. (Human Disease Ontology, DOID_0060022)
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1 genes involed in the disease cd40 ligand deficiency from the DISEASES Curated Gene-Disease Assocation Evidence Scores dataset.