NOCARH syndrome

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NOCARH syndrome

ORPHA:619363Disease

Also called Neonatal-onset cytopenia-autoinflammation-rash episodes of HLH syndrome · Neonatal-onset cytopenia-autoinflammation-rash episodes of hemophagocytic lymphohistiocytosis syndrome

What it is

A rare unclassified autoinflammatory syndrome characterized by neonatal onset pancytopenia, type I interferon-dependent multisystemic autoinflammation, painful rash with variable frequencies and hemophagocytic lymphohistiocytosis. Failure to thrive, fever, gastrointestinal/upper respiratory tract infections, enterocolitis, hepatosplenomegaly, myelofibrosis and neurodevelopmental delay are other common clinical features. Facial dysmorphism including macrocephaly, mild frontal bossing, sparse hair, mild hypertelorism, depressed nasal bridge can be present.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Infancy, Neonatal
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.

Gene

CDC42Disease-causing germline mutation(s)

ICD-10 codes

D76.1filed under a broader ICD-10 category — shared with 3 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 0850065UMLS C5925147

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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