Disorders of innate immunity [DS:H02525] Primary immunodeficiency disease [DS:H01725]
Description
A patient with a mutation in CD16, also known as FcgRIIIa, has been identified. He was a 3-year-old boy, and suffered from recurrent viral respiratory tract infections since birth. CD16 is part of the FcgRIII found on NK cells as well as macrophages and some T cells. The receptor allows NK cells to phagocytose organisms or cells coated with IgG in the absence of MHC (antibody-dependent cellular cytotoxicity). The mutation disrupts NK cell function and is associated with NK cytopenia. The patient also had severe clinical problems after BCG vaccination.
Category
Primary immunodeficiency
Brite
Human diseases in ICD-11 classification [BR:br08403]
04 Diseases of the immune system
Primary immunodeficiencies
4A00 Primary immunodeficiencies due to disorders of innate immunity
H00090 NK cell defects
