| Metadata | |
|---|---|
| ID | DOID:0060022 | 
| Name | CD40 ligand deficiency | 
| Definition | 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.  https://www.ncbi.nlm.nih.gov/pubmed/30681380  | 
			    
                        
| Xrefs | |
| Synonyms | 
                                
                                    
                                         HIGMX-1 [EXACT] X-linked hyper-IgM syndrome [EXACT]  | 
                        
| Parent Relationships | |
| Subclass Logical Relationships | 
                            
	                             has material basis in some X-linked recessive inheritance  |