ICON: The Early Diagnosis of Congenital Immunodeficiencies
- First Online:
- Received:
- Accepted:
Abstract
Primary immunodeficiencies are intrinsic defects in the immune system that result in a predisposition to infection and are frequently accompanied by a propensity to autoimmunity and/or immunedysregulation. Primary immunodeficiencies can be divided into innate immunodeficiencies, phagocytic deficiencies, complement deficiencies, disorders of T cells and B cells (combined immunodeficiencies), antibody deficiencies and immunodeficiencies associated with syndromes. Diseases of immune dysregulation and autoinflammatory disorder are many times also included although the immunodeficiency in these disorders are often secondary to the autoimmunity or immune dysregulation and/or secondary immunosuppression used to control these disorders. Congenital primary immunodeficiencies typically manifest early in life although delayed onset are increasingly recognized. The early diagnosis of congenital immunodeficiencies is essential for optimal management and improved outcomes. In this International Consensus (ICON) document, we provide the salient features of the most common congenital immunodeficiencies.
Keywords
Primary immunodeficiencies combined immunodeficiencies severe combined immunodeficiencies diagnosis treatment consensus global-consensusAbbreviations
- AD-EDA-ID
Autosomal dominant anhidrotic ectodermal dysplasia with immunodeficiency
- AD-HIES
Autosomal dominant hyper IgE syndrome
- AR-HIES
Autosomal recessive hyper IgE syndrome
- AT
Ataxia telangiectasia
- ATM
Ataxia-telangiectasia mutated
- BCG
Bacillus Calmette-Guérin
- CGD
Chronic granulomatous disease
- CID
Combined immunodeficiencies
- CMC
Chronic Mucocutaneous Candidiasis
- CSR
Class switch recombination
- DHR
Dihydrorhodamine–1,2,3
- EDA
Anhidrotic ectodermal dysplasia
- G-CSF
Granulocyte colony-stimulating factor
- GVHD
Graft-versus-host disease
- HSCT
Hematopoietic stem-cell transplantation
- HSE
Herpes simplex encephalitis
- HSV1
Herpes simplex virus type 1
- ICON
International consensus
- IVIG
Intravenous immunoglobulin
- LAD-I
Leukocyte adhesion deficiency type I
- LAD-II
Leukocyte adhesion deficiency type II
- LAD-III
Leukocyte adhesion deficiency type III
- MSMD
Mendelian susceptibility to mycobacterial diseases
- NBS
Newborn screening
- NBT
Nitroblue tetrazolium
- OSM
Oncostatin M
- PID
Primary immunodeficiency
- SCID
Severe combined immunodeficiency
- SHM
Somatic hyper mutation
- STAT3
Signal transducer and activator of transcription 3
- TIR
Toll-IL-1R
- TLR
Toll-like receptors
- TREC
T cell receptor excision circle
- WAS
Wiskott-Aldrich syndrome
- WASp
Wiskott-Aldrich syndrome protein
- XHIGM
X-linked hyper IgM
- XLA
X-linked agammaglobulinemia
- XLT
X-linked thrombocytopenia
- XR-EDA-ID
X-linked recessive anhidrotic ectodermal dysplasia with immunodeficiency