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Multiple sclerosis-ichthyosis-factor VIII deficiency syndrome is characterized by the association of multiple sclerosis with lamellar ichthyosis and hematological anomalies (beta thalassemia minor and a quantitative deficit of factor VIII-von Willebrand complex). Other clinical manifestations may include eye involvement (optic atrophy, diplopia), neuromuscular involvement (ataxia, pyramidal syndrome, gait disturbance) and sensory disorder. There have been no further descriptions in the literature since 1992.
Features include very common findings: Damage to the optic nerve (optic atrophy), Diplopia, Sensory neuropathy, and Ataxia and others; and common findings: Hemiplegia/hemiparesis.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 4 | Sensory neuropathy, Ataxia, Difficulty walking (gait disturbance) |
Phenotype severity distribution: 11 very common features, 1 common feature.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for multiple sclerosis-ichthyosis-factor VIII deficiency syndrome.
2 publications have been identified in PubMed for multiple sclerosis-ichthyosis-factor VIII deficiency syndrome. Research spans Review / Meta-Analysis (50%) and Case Report / Case Series (50%).
Panferov E (2025). [PMID: 40565081](https://pubmed.ncbi.nlm.nih.gov/40565081/). *Int J Mol Sci*. [Review / Meta-Analysis]
Zapata Arceo S (2025). [PMID: 40799883](https://pubmed.ncbi.nlm.nih.gov/40799883/). *Cureus*. [Case Report / Case Series]
Data assembled from 4 of 12 sources · Last updated Sep 18, 2026, 5:11 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Eyes
3 |
Damage to the optic nerve (optic atrophy), Diplopia, Retrobulbar optic neuritis |
Blood and immune system | 2 | Abnormal leukocyte morphology, Blood clotting problems (abnormality of coagulation) |
Muscles | 1 | Damage to the optic nerve (optic atrophy) |
Ears | 1 | Vertigo |
Skin | 1 | Dry, scaly skin (ichthyosis) |