Cited by 429Immunodeficiency and Autoimmune DisordersMycobacterium research and diagnosisTuberculosis Research and Epidemiology

Mutation in the signal-transducing chain of the interferon-gamma receptor and susceptibility to mycobacterial infection

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Dorman, S E, Holland, S M·1998·Journal of Clinical Investigation

Abstract

IFN-gamma is critical in the immune response to mycobacterial infections, and deficits in IFN-gamma production and response have been associated with disseminated nontuberculous mycobacterial infections. Mutations in the IFN-gamma receptor ligand-binding chain (IFNgammaR1) have been shown to confer susceptibility to severe infection with nontuberculous mycobacteria. However, mutations in the IFN-gamma receptor signal-transducing chain (IFNgammaR2) have not been described. We describe a child with disseminated Mycobacterium fortuitum and M. avium complex infections and absent IFN-gamma signaling due to a mutation in the extracellular domain of IFNgammaR2. In vitro cytokine production by patient PBMCs showed 75% less PHA-induced IFN-gamma production than in normal cells, while patient PHA-induced TNF-alpha production was normal. The normal augmentation of TNF-alpha production when IFN-gamma was added to endotoxin was absent from patient cells. Expression of IFNgammaR1 was normal, but there was no phosphorylation of Stat1 in response to IFN-gamma stimulation. DNA sequence analysis of the gene for IFNgammaR2 showed a homozygous dinucleotide deletion at nucleotides 278 and 279, resulting in a premature stop codon in the protein extracellular domain. This novel gene defect associated with disseminated nontuberculous mycobacterial infection emphasizes the critical role that IFN-gamma plays in host defense against mycobacteria.

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  • Mutations in either subunit of the IFNGR result in increased risk of infections with mycobacteria.

    “Notably, mutations in either subunit of the IFNGR result in increased risk of infections with mycobacteria (Dorman and Holland, 1998).”

    From Iron in infection and immunity (2020) · cites this paper as Dorman and Holland, 1998

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Authors
Dorman, S. E., & Holland, S. M.
Affiliations
National Institutes of Health (US)
Venue
Journal of Clinical Investigation
Published
1998-06-01
Volume
101
Issue
11
Pages
2364-2369
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2076228603
Cited by
429
References
28
Citations by year
2026: 2 · 2025: 3 · 2024: 6 · 2023: 4 · 2022: 13 · 2021: 11 · 2020: 8 · 2019: 7 · 2018: 9 · 2017: 9 · 2016: 9 · 2015: 8 · 2014: 15 · 2013: 13 · 2012: 16
FWCI
10.68
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immunodeficiency and Autoimmune Disorders
  • Health Sciences › Medicine › Epidemiology › Mycobacterium research and diagnosis
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
Keywords
IFNGR2, interferon-gamma signaling, nontuberculous mycobacterial infection, Mycobacterium fortuitum, Mycobacterium avium complex, disseminated mycobacterial infection, premature stop codon, STAT1 phosphorylation, TNF-alpha production, host defense against mycobacteria, genetic susceptibility
MeSH terms
Interferon gamma Receptor, Disease Susceptibility, Female, Humans, Infant, Newborn, Interferon-gamma, Male, Mutation, Mycobacterium Infections, Pregnancy, Signal Transduction, Receptors, Interferon

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