CD40 ligand
Alias
CD154 | CD40L | HIGM1 | IGM | IMD3 | T-BAM | TNFSF5 | TRAP | gp39 | hCD40L
The protein encoded by this gene is expressed on the surface of T cells. It regulates B cell function by engaging CD40 on the B cell surface. A defect in this gene results in an inability to undergo immunoglobulin class switch and is associated with hyper-IgM syndrome. [provided by RefSeq, Jul 2008].