Immunodeficiency 61, also known as agammaglobulinemia, x-linked, type 2, is related to agammaglobulinemia and agammaglobulinemia, x-linked. An important gene associated with Immunodeficiency 61 is SH3KBP1 (SH3 Domain Containing Kinase Binding Protein 1). Affiliated tissues include b cells and t cells, and related phenotypes are recurrent respiratory infections and attention deficit hyperactivity disorder