Mendelian susceptibility to mycobacterial diseases

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Mendelian susceptibility to mycobacterial diseases due to complete IFNgammaR1 deficiency

ORPHA:99898Disease

Also called MSMD due to complete IFNgammaR1 deficiency · MSMD due to complete interferon gamma receptor 1 deficiency · Mendelian susceptibility to mycobacterial diseases due to complete interferon gamma receptor 1 deficiency

What it is

Mendelian susceptibility to mycobacterial diseases (MSMD) due to complete interferon gamma receptor 1 (IFN-gammaR1) deficiency is a genetic variant of MSMD characterized by a complete deficiency in IFN-gammaR1, leading to impaired IFN-gamma immunity and, consequently, to severe and often fatal infections with bacillus Calmette-Guérin (BCG) and other environmental mycobacteria (EM).

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Infancy, Neonatal
Inheritance
Autosomal recessive
Classified as
Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Gene

IFNGR1Disease-causing germline mutation(s)

ICD-10 codes

D84.8filed under a broader ICD-10 category — shared with 39 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references

GARD 9185MESH C535530MONDO 0020530OMIM 209950UMLS C4011949

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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