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Start free with EleplanAcrocraniofacial dysostosis
ORPHA:949Malformation syndrome
Also called Kaplan-Plauchu-Fitch syndrome
What it is
A very rare acrofacial dysostosis characterized by short stature, acrocephaly, ocular hypertelorism, ptosis of eyelids, ocular proptosis, downslanting palpebral fissures, high nasal bridge, anteverted nostrils, short philtrum, cleft palate, micrognathia, abnormal external ears, preauricular pits, mixed hearing loss, bulbous digits, metatarsus varus, pectus excavatum and various radiological abnormalities. Features of this syndrome were reported to overlap with otopalatodigital syndrome types 1 and 2. There have been no further descriptions in the literature since 1988.
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
Very common80–99%
24- Abnormal fingernail morphology
- Abnormal form of the vertebral bodies
- Abnormal pinna morphology
- Abnormal toenail morphology
- Anteverted nares
- Broad thumb
- Cleft palate
- Downslanted palpebral fissures
- Flared iliac wings
- Micrognathia
- Partial duplication of the distal phalanx of the hallux
- Posteriorly rotated ears
- Preauricular pit
- Prominent nasal bridge
- Proptosis
- Ptosis
- Short 1st metacarpal
- Short distal phalanx of finger
- Short philtrum
- Short stature
- Tapered finger
- Telecanthus
- Triphalangeal thumb
- Turricephaly
Common30–79%
20- Abnormal cardiovascular system morphology
- Abnormality of the hip bone
- Abnormality of the incus
- Abnormality of the malleus
- Abnormality of the middle ear ossicles
- Advanced eruption of teeth
- Choanal atresia
- Conductive hearing impairment
- Coxa valga
- Craniosynostosis
- Genu valgum
- Hypertelorism
- Lacrimation abnormality
- Microcephaly
- Myopia
- Pectus excavatum
- Sensorineural hearing impairment
- Sloping forehead
- Spina bifida occulta
- Ulnar deviation of finger
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.
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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