Stormorken-Sjaastad-Langslet syndrome

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Stormorken-Sjaastad-Langslet syndrome

ORPHA:3204Disease

Also called Stormorken syndrome · Thrombocytopathy-asplenia-miosis syndrome

What it is

Stormorken-Sjaastad-Langslet syndrome is characterized by thrombocytopathy, asplenia, miosis, muscle fatigue, migraine, dyslexia, and ichthyosis. It has been described in six members of one family. It is transmitted as an autosomal dominant trait.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
All ages
Inheritance
Autosomal dominant
Classified as
Disease

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

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.

Genes

ORAI1Disease-causing germline mutation(s) (gain of function)
STIM1Disease-causing germline mutation(s) (gain of function)

ICD-10 codes

D69.8filed under a broader ICD-10 category — shared with 5 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 5188MESH C566108MONDO 0008497OMIM 185070UMLS C1861451

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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