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Start free with EleplanFrontonasal dysplasia-severe microphthalmia-severe facial clefting syndrome
ORPHA:306542Malformation syndrome
Also called ALX1-related frontonasal dysplasia · Frontonasal dysplasia type 3
What it is
Frontonasal dysplasia-severe microphthalmia-severe facial clefting syndrome is a rare, genetic, orofacial clefting malformation syndrome characterized by severe frontonasal dysplasia with complete cleft palate, facial cleft, extreme microphtalmia and hypertelorism, frequently associated with eyelid colobomata, sparse or absent eyelashes/eyebrows, wide nasal bridge with hypoplastic alae nasi, low-set, posteriorly rotated ears and caudal appendage in the sacral region.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Antenatal, 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.
Signs and symptoms
Common30–79%
25- Agenesis of corpus callosum
- Aplasia/Hypoplasia of the frontal sinuses
- Bifid nose
- Brachydactyly
- Camptodactyly of finger
- Cataract
- Cleft palate
- Conductive hearing impairment
- Epicanthus
- Eyelid coloboma
- Facial cleft
- Finger clinodactyly
- Hypertelorism
- Hypoplasia of the frontal bone
- Hypoplasia of the maxilla
- Microphthalmia
- Pectoral muscle hypoplasia/aplasia
- Posteriorly rotated ears
- Preauricular skin tag
- Ptosis
- Sparse eyebrow
- Sparse eyelashes
- Underdeveloped nasal alae
- Wide nasal bridge
- Widow's peak
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.
Gene
ICD-10 codes
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
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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