T-cell large granular lymphocyte leukemia

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T-cell large granular lymphocyte leukemia

ORPHA:86872Disease

Also called Proliferation of large granular lymphocytes · T-LGL · T-cell LGL leukemia

What it is

T-cell large granular lymphocyte leukemia (T-cell LGL leukemia) is a lymphoproliferative malignancy that arises from the mature T-cell (CD3+) lineage.

Key facts

Prevalence
1-9 / 1 000 000 (annual incidence, Europe)
Age of onset
Adult
Inheritance
Not applicable
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

STAT3Disease-causing somatic mutation(s)

ICD-10 codes

C91.7filed under a broader ICD-10 category — shared with 1 other rare disease

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

GARD 9812MEDDRA 10065862MONDO 0019469UMLS C1955861

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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