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Start free with EleplanDeafness-genital anomalies-metacarpal and metatarsal synostosis syndrome
ORPHA:3224Malformation syndrome
Also called Hearing loss-genital anomalies-metacarpal and metatarsal synostosis syndrome · Pfeiffer-Kapferer syndrome
What it is
Deafness-genital anomalies-metacarpal and metatarsal synostosis syndrome is characterised by sensorineural deafness, bilateral synostosis of the 4th and 5th metacarpals and metatarsals, genital anomalies (hypospadias in males), psychomotor delay and abnormal dermatoglyphics. So far, it has been described in two unrelated patients. Facial dysmorphism was noted in both patients (prominent forehead, ear anomalies, facial asymmetry and an open mouth appearance).
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy, Neonatal
- 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%
16- Abnormal dermatoglyphics
- Abnormality of the cerebellar vermis
- Abnormal metacarpal morphology
- Abnormal nasal morphology
- Cerebellar hypoplasia
- Cerebral cortical atrophy
- Facial asymmetry
- Hypospadias
- Intellectual disability
- Low-set ears
- Pes cavus
- Posteriorly rotated ears
- Prominent forehead
- Protruding ear
- Sensorineural hearing impairment
- Ventriculomegaly
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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