Alternative titles and symbols : Il21r immunodeficiency;
Description : IL21R immunodeficiency is an autosomal recessive primary immunodeficiency characterized
by B- and T-cell defects and variable dysfunction of NK cells. Patients tend to have
normal numbers of lymphocytes, but show defective class-switched B cells, low IgG,
defective antibody response, and defective T-cell responses to certain antigens (summary
by Kotlarz et al., 2013).;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the interleukin 21 receptor gene (IL21R, 605383.0002);