Singleton-Merten dysplasia

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Singleton-Merten dysplasia

ORPHA:85191Malformation syndrome

Also called Singleton-Merten syndrome

What it is

Singleton-Merten dysplasia is characterized by dental dysplasia, progressive calcification of the thoracic aorta with stenosis, osteoporosis and expansion of the marrow cavities in hand bones. Additional features included generalized muscle weakness and atrophy, and chronic psoriasiform skin eruptions. It has been reported in four unrelated patients (male and female) and in a family with multiple affected members (male).

Key facts

Prevalence
<1 / 1 000 000
Age of onset
No data available
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.

Genes

IFIH1Disease-causing germline mutation(s) (gain of function)
RIGIDisease-causing germline mutation(s)

ICD-10 codes

Q78.8filed under a broader ICD-10 category — shared with 54 other rare diseases

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

GARD 122MESH C537343MONDO 0008429OMIM 182250OMIM 616298UMLS C0432254

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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