Orofaciodigital syndrome type 18

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Orofaciodigital syndrome type 18

ORPHA:508501Malformation syndrome

Also called OFD18 · Oral-facial-digital syndrome type 18 · Oral-facial-digital syndrome with short stature and brachymesophalangy

What it is

A rare developmental disorder of the ciliopathy group characterized by oral anomalies (multiple oral frenula, missing incisors), facial dysmorphism (such as square face with small forehead, upslanting palpebral fissures, and cleft lip, among other features), digital anomalies (brachydactyly, brachymesophalangy, polydactyly), and short stature. Additional reported manifestations include short femoral neck, bilateral cervical ribs, abnormal vertebral bodies, and gracile long bones.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Neonatal
Inheritance
Autosomal recessive
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

IFT57Disease-causing germline mutation(s)

ICD-10 codes

Q87.0filed under a broader ICD-10 category — shared with 154 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 0034823MONDO 34823MONDO 54770OMIM 617927UMLS C5567903

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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