Intrauterine growth retardation-micrognath…

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Intrauterine growth retardation-micrognathia-short stature-facial dysmorphism-rhizomelic shortening syndrome

ORPHA:659702Malformation syndrome

Also called ARCN1-related syndrome

What it is

A rare multiple congenital anomalies/dysmorphic syndrome characterized by intrauterine growth restriction, microcephaly, short stature, rhizomelic shortening and facial dysmorphism (including prominent forehead, downslanted palpebral fissures, bulbous nasal tip, large or prominent ears and notably severe micrognathia). Developmental delay is commonly reported, intellectual disability may also be present. Additional clinical features may include genitourinary malformations in males, transient liver dysfunction, glycosylation abnormalities, giant cell hepatitis, hepatoblastoma, and cataracts. Severity of the disease varies from mild to very severe which may lead to intrauterine death or stillbirth in some cases.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Antenatal, Neonatal
Inheritance
Autosomal dominant
Classified as
Malformation syndrome

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

ARCN1Disease-causing germline mutation(s) (loss of function)

ICD-10 codes

Q87.1filed under a broader ICD-10 category — shared with 107 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 0014948MONDO 14948OMIM 617164UMLS C5925140

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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