The CD40/CD40 ligand (CD40L) costimulatory system, which amplifies immune responses and can induce inflammation, is believed to have a role in skin manifestations of other autoimmune diseases ...
X-HIM is caused by mutations in the gene for CD40 ligand (CD40L), a T cell membrane protein that mediates T cell-dependent immune functions. We report the case of a 6-year-old male with X-HIM due ...