Dysfunctional inhibitor of nuclear factor-κB (NF-κB) kinase regulatory subunit gamma (IKBKG) is known to trigger incontinentia pigmenti (IP), anhidrotic ectodermal dysplasia with immunodeficiency (EDA-ID), immunodeficiency (ID), and IKBKG deleted exon 5 autoinflammatory syndrome (NDAS). This evidence concerns the gene IKBKG and immunodeficiency disease.