Agammaglobulinemia 1, Autosomal Recessive, also known as agammaglobulinemia 1, is related to immunodeficiency 23 and agammaglobulinemia 9, autosomal recessive, and has symptoms including diarrhea An important gene associated with Agammaglobulinemia 1, Autosomal Recessive is IGHM (Immunoglobulin Heavy Constant Mu), and among its related pathways/superpathways are Development Angiotensin activation of ERK and Immune response NFAT in immune response. Affiliated tissues include b cells and spleen, and related phenotypes are decreased circulating antibody level and b lymphocytopenia