T-B+NK+ severe combined immunodeficiency

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T-B+NK+ severe combined immunodeficiency due to LAT deficiency

ORPHA:504523Disease

Also called T-B+NK+ SCID due to LAT deficiency

What it is

A rare severe combined immunodeficiency characterized by T-cell lymphopenia and absent T-cell proliferative responses, and normal B-cell and natural killer cell counts. Patients present in the first months of life with severe recurrent infections, failure to thrive, hematologic autoimmune disorders, and/or lymphoproliferation with splenomegaly.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Infancy
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

LATDisease-causing germline mutation(s)

ICD-10 codes

D81.2filed under a broader ICD-10 category — shared with 11 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.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

MONDO 0044721OMIM 617514UMLS C4479588

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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