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X-linked severe combined immunodeficiency

Synonyms
IMMUNODEFICIENCY 4; Severe combined immunodeficiency, X-linked, T cell-negative, B cell-positive, NK cell-negative; T-B+ severe combined immunodeficiency due to gamma chain deficiency; X-Linked Combined Immunodeficiency Diseases
Modes of inheritance
X-linked recessive inheritance (Orphanet)

Summary

Excerpted from the GeneReview: X-Linked Severe Combined Immunodeficiency
The phenotypic spectrum of X-linked severe combined immunodeficiency (X-SCID) ranges from typical X-SCID (early-onset disease in males that is fatal if not treated with hematopoietic stem cell transplantation [HSCT] or gene therapy) to atypical X-SCID (later-onset disease comprising phenotypes caused by variable immunodeficiency, immune dysregulation, and/or autoimmunity). Typical X-SCID. Prior to universal newborn screening (NBS) for SCID most males with typical X-SCID came to medical attention between ages three and six months because of recurrent infections, persistent infections, and infections with opportunistic organisms. With universal NBS for SCID, the common presentation for typical X-SCID is now an asymptomatic, healthy-appearing male infant. Atypical X-SCID, which usually is not detected by NBS, can manifest in the first years of life or later with one of the following: recurrent upper and lower respiratory tract infections with bronchiectasis; Omenn syndrome, a clinical phenotype caused by immune dysregulation; X-SCID combined immunodeficiency (often with recurrent infections, warts, and dermatitis); immune dysregulation and autoimmunity; or Epstein-Barr virus-related lymphoproliferative complications.
Full text of GeneReview (by section):
Summary
GeneReview Scope
Diagnosis
Clinical Characteristics
Genetically Related (Allelic) Disorders
Differential Diagnosis
Management
Genetic Counseling
Resources
Molecular Genetics
Chapter Notes
References
Authors:
Eric J Allenspach
David J Rawlings
Aleksandra Petrovic
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Available tests

63 tests are in the database for this condition.

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Clinical tests (63 available)

Biochemical Genetics Tests

Molecular Genetics Tests

Genes See tests for all associated and related genes

  • Also known as: CD132, CIDX, IL-2RG, IMD4, P64, SCIDX, SCIDX1, IL2RG
    Summary: interleukin 2 receptor subunit gamma

Clinical features

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Imported from Human Phenotype Ontology (HPO)

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