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Start free with EleplanBranchiogenic deafness syndrome
ORPHA:50815Malformation syndrome
Also called Branchiogenic hearing loss syndrome · Mégarbané-Loiselet syndrome
What it is
Branchiogenic deafness syndrome is a multiple congenital anomalies syndrome, described in one family to date, characterized by branchial cysts or fistulae; ear malformations; congenital hearing loss (conductive, sensorineural, and mixed); internal auditory canal hypoplasia; strabismus; trismus; abnormal fifth fingers; vitiliginous lesions, short stature; and mild learning disability. Renal and urethral abnormalities are absent.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Antenatal, Neonatal
- Inheritance
- Autosomal dominant
- 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%
18- Abnormality of the middle ear ossicles
- Abnormal pinna morphology
- Aplasia/Hypoplasia of the inner ear
- Astigmatism
- Atresia of the external auditory canal
- Branchial cyst
- Branchial fistula
- Conductive hearing impairment
- Mixed hearing impairment
- Osteolytic defects of the distal phalanges of the hand
- Overfolded helix
- Preauricular pit
- Preauricular skin tag
- Sensorineural hearing impairment
- Short distal phalanx of finger
- Short stature
- Strabismus
- Underdeveloped tragus
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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