Disorders of adaptive immunity [DS:H02526] Primary immunodeficiency disease [DS:H01725]
Description
Severe combined immunodeficiency (SCID) comprises a heterogeneous group of monogenic disorders that result in early-onset severe infections by a range of pathogens (such as bacteria, viruses and fungi). Typically, patients with SCID have a severe defect in T-cell differentiation, along with direct or indirect impairment of B-cell development and function. Adenosine deaminase (ADA) deficiency accounts for about half of the autosomal recessive forms of SCIDs. It is one of the most severe immunodeficiencies and is associated with severe depletion of B cells, T cells, and NK cells. V(D)J- recombination deficiency caused by defects in recombinase-activating gene 1 (RAG1), RAG2 and Artemis (DCLRE1C) leads to a T-B-SCID phenotype that is characterized by an arrest of B- and T-cell maturation at the stage of pro-B and pre-T cells, respectively, whereas natural killer (NK)-cell maturation is not affected. V(D)J recombination generates the diversity of B- and T-cell primary immune repertoires.
Category
Primary immunodeficiency
Brite
Human diseases in ICD-11 classification [BR:br08403]
04 Diseases of the immune system
Primary immunodeficiencies
4A01 Primary immunodeficiencies due to disorders of adaptive immunity
H00092 T-B-Severe combined immunodeficiency
Pathway-based classification of diseases [BR:br08402]
Replication and repair
nt06506 Double-strand break repair
H00092 T-B-Severe combined immunodeficiency
Picard C, Al-Herz W, Bousfiha A, Casanova JL, Chatila T, Conley ME, Cunningham-Rundles C, Etzioni A, Holland SM, Klein C, Nonoyama S, Ochs HD, Oksenhendler E, Puck JM, Sullivan KE, Tang ML, Franco JL, Gaspar HB
Title
Primary Immunodeficiency Diseases: an Update on the Classification from the International Union of Immunological Societies Expert Committee for Primary Immunodeficiency 2015.
Primary immunodeficiency diseases: an update from the International Union of Immunological Societies Primary Immunodeficiency Diseases Classification Committee.
