Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.
Start free with EleplanTemtamy preaxial brachydactyly syndrome
ORPHA:363417Malformation syndrome
What it is
A rare, genetic, syndromic dysostosis characterized by bilateral, symmetrical, preaxial brachydactyly associated with hyperphalangy, motor developmental delay and intellectual disability, growth retardation, sensorineural hearing loss, dental abnormalities (incuding misalignment of teeth, talon cusps, microdontia), and facial dysmorphism that includes plagiocephaly, round face, hypertelorism, malar hypoplasia, malformed ears, microstomia and micro/retrognathia.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy, 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%
17- Abnormal facial shape
- Abnormality of the dentition
- Abnormally large globe
- Brachydactyly
- Complete duplication of proximal phalanx of the thumb
- Complete duplication of the middle phalanx of the 3rd finger
- Global developmental delay
- Growth delay
- Hypodontia
- Intellectual disability
- Partial duplication of the proximal phalanx of the 3rd finger
- Partial duplication of thumb phalanx
- Proximal symphalangism of hands
- Severe sensorineural hearing impairment
- Synostosis of carpals/tarsals
- Talon cusp
- Widely-spaced maxillary central incisors
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.
Powered by Eleplan
A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.
Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.