Mendelian susceptibility to mycobacterial diseases

Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.

Start free with Eleplan

Mendelian susceptibility to mycobacterial diseases due to complete IL12B deficiency

ORPHA:319558Disease

Also called MSMD due to complete IL12B deficiency · MSMD due to complete interleukin 12B deficiency · Mendelian susceptibility to mycobacterial diseases due to complete interleukin 12B deficiency

What it is

Mendelian susceptibility to mycobacterial diseases (MSMD) due to complete interleukin-12 subunit beta (IL12B) deficiency is a genetic variant of MSMD characterized by mild bacillus Calmette-Guérin (BCG) infections and recurrent Salmonella infections.

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

IL12BDisease-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

MONDO 0013954OMIM 614890UMLS C4303665

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.

Powered by Eleplan

A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.