Li-Fraumeni syndrome

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Li-Fraumeni syndrome

ORPHA:524Disease

What it is

A rare, inherited, cancer predisposition syndrome characterized by the early-onset of multiple primary cancers including breast cancer, soft tissue and bone sarcomas, brain tumors, adrenal cortical carcinoma (ACC), leukemias, and other cancers.

Key facts

Prevalence
1-9 / 100 000 (United Kingdom)
Age of onset
All ages
Inheritance
Autosomal dominant
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.

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Genes

TP53Disease-causing germline mutation(s)
CDKN2ACandidate gene tested
CHEK2Candidate gene tested

1 modifying gene — variants that can change how the disease behaves, not cause it

MDM2

ICD-10 codes

C97filed under a broader ICD-10 category

Cross-references

GARD 6902MEDDRA 10066795MESH D016864MONDO 0018875OMIM 151623OMIM 609265UMLS C0085390

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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