Description : Secretion of the contents of cytolytic granules at the immunologic synapse is a highly
regulated process essential for lymphocyte cytotoxicity. This process requires the
rapid transfer of perforin (170280)-containing lytic granules to the target cell interface,
followed by their docking and fusion with the plasma membrane. Familial hemophagocytic
lymphohistiocytosis (HPLH) is a genetically heterogeneous condition characterized
by defective cytotoxicity. For a more detailed description of HPLH, see 267700.;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the unc-13 homolog D gene (UNC13D, 608897.0001);