NCIt definition : An autosomal dominant primary immunodeficiency caused by mutation(s) in the PIK3CD
gene, encoding phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta
isoform. It is characterized by recurrent infections in the lungs, paranasal sinuses,
and ears; lymphopenia, particularly B-cells and T-cells.;
NCIt note : See 'Immunodeficiency 14A, Autosomal Dominant(C187988)';