Spinocerebellar Ataxia 31 (SCA31)

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OMIM 57 117210 Disease Ontology 12 DOID:0050980 Orphanet 59 ORPHA217012 ICD10 via Orphanet 34 G11.8 UMLS via Orphanet 74 C1861736

MedGen 42 C1861736 MeSH 44 D020754 SNOMED-CT via HPO 69 263681008 103276001 15188001 343087000 95828007 60700002 563001 85102008 221360009 397790002 8011004 405946002 95646004 26079004 25136009 130980003 more UMLS 73 C1861736

NIH Rare Diseases : ⁵³ The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.Orpha Number: 217012Disease definitionSpinocerebellar ataxia type 31 (SCA31) is a very rare subtype of autosomal dominant cerebellar ataxia type III (ADCA type III; see this term) characterized by the late-onset of cerebral ataxia, dysarthria and horizontal gaze nystagmus, and that is occasionally accompanied by pyramidal signs, tremor, decreased vibration sense and hearing difficulties.EpidemiologySCA31 is the third most common form of ADCA (see this term) in Japan, where more than 20 families have been reported to date. It is rarely found in other Asian countries and is extremely rare in Western countries.Clinical descriptionThe mean age of disease onset is 58 years but it can present between the ages of 8 to 83 years. Ataxia, dysarthria, and horizontal gaze nystagmus are the common manifestations of SCA31 and the disease duration can be more than 10 years. Less common manifestations include pyramidal signs, tremor, decreased vibration sense, and hearing difficulties.EtiologySCA31 is due to non-coding pentanucleotide repeat expansions in the BEAN1 gene (16q21), encoding protein BEAN1.Genetic counselingSCA31 is inherited autosomal dominantly with incomplete penetrance and genetic counseling is possible.Visit the Orphanet disease page for more resources.

MalaCards based summary : Spinocerebellar Ataxia 31, also known as spinocerebellar ataxia type 31, is related to spinocerebellar ataxia 1 and spinocerebellar ataxia 6, and has symptoms including gait ataxia An important gene associated with Spinocerebellar Ataxia 31 is BEAN1 (Brain Expressed Associated With NEDD4 1). Affiliated tissues include eye, cerebellum and spinal cord, and related phenotypes are nystagmus and spasticity

UniProtKB/Swiss-Prot : ⁷⁵ Spinocerebellar ataxia 31: A form of spinocerebellar ataxia, a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA31 belongs to the autosomal dominant cerebellar ataxias type III (ADCA III) which are characterized by pure cerebellar ataxia without additional signs.

Description from OMIM: 117210

Clinical features from OMIM:

117210

#	Description	GenomeRNAi Source Accession	Score	Top Affiliating Genes
1	Decreased homologous recombination repair frequency	GR00151-A-1	9.02	ATXN3 HNRNPA2B1 SACS SETX
2	Decreased homologous recombination repair frequency	GR00151-A-2	9.02	ATXN3

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Search GEO for disease gene expression data for Spinocerebellar Ataxia 31.