Congenital Hypogammaglobulinemia, also known as congenital hypogammaglobulinaemia, is related to agammaglobulinemia and agammaglobulinemia, x-linked. An important gene associated with Congenital Hypogammaglobulinemia is PIDD1 (P53-Induced Death Domain Protein 1), and among its related pathways/superpathways are NF-kappaB Signaling and Immune response Fc epsilon RI pathway. Affiliated tissues include liver, and related phenotypes are neoplasm and immune system