{"Name":"Spinocerebellar ataxia 7","DiseaseID__c":"GARD:0020405","id":20405,"encodedName":"spinocerebellar-ataxia-7","IsDeleted":false,"Disease_Name_Full__c":"Spinocerebellar ataxia 7","Xref_IDs__c":"715726000; C0752125; C126562; DOID:0050958; MEDGEN:156006; MONDO:0016163; NBK1256; OMIM:164500","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":5,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":1,"No_of_HHS_records__c":0,"World_Estimate__c":null,"No_of_HRSA_records__c":0,"Evidence_Based_Score__c":2,"No_of_Disease_Descriptions__c":1,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":0,"Description_Source__c":"ORPHA:208508","Disease_Description__c":null,"GARD_Name__c":"Spinocerebellar ataxia 7","GARD_Synonym__c":"adca, type ii; adca2; adcaii; ataxia with pigmentary retinopathy; atxn7 autosomal dominant cerebellar ataxia type ii; autosomal dominant cerebellar ataxia type 2; autosomal dominant cerebellar ataxia type ii; autosomal dominant cerebellar ataxia type ii caused by mutation in atxn7; cerebellar syndrome pigmentary maculopathy; cerebellar syndrome-pigmentary maculopathy syndrome; olivopontocerebellar atrophy iii; opca iii; opca with macular degeneration and external ophthalmoplegia; opca with retinal degeneration; sca7; spinocerebellar ataxia type 7","Curated_Disease_Description_Source__c":"ORPHA:208508","Curated_Disease_Description__c":"Spinocerebellar ataxia type 7 (SCA7) comprises a phenotypic spectrum ranging from adolescent- or adult-onset progressive cerebellar ataxia and cone-rod retinal dystrophy to infantile or early-childhood onset with multiorgan failure, an accelerated course, and early death. Anticipation in this nucleotide repeat disorder may be so dramatic that within a family a child with infantile or early-childhood onset may be diagnosed with what is thought to be an unrelated neurodegenerative disorder years before a parent or grandparent with a CAG repeat expansion becomes symptomatic. In adolescent-onset SCA7, the initial manifestation is typically impaired vision, followed by cerebellar ataxia. In those with adult onset, progressive cerebellar ataxia usually precedes the onset of visual manifestations. While the rate of progression varies in these two age groups, the eventual result for almost all affected individuals is loss of vision, severe dysarthria and dysphagia, and a bedridden state with loss of motor control.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":null,"SourceID__c":"ORPHA:208508","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0016163","ORPHANET_ID__c":"ORPHA:208508; ORPHA:94147","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":null,"Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":null,"Spanish_GARD_Synonym__c":null,"Category_Linearization__c":"ORPHA:98006","icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"Spinocerebellar ataxia type 7 (SCA7) comprises a phenotypic spectrum ranging from adolescent- or adult-onset progressive cerebellar ataxia and cone-rod retinal dystrophy to infantile or early-childhood onset with multiorgan failure, an accelerated course, and early death. Anticipation in this nucleotide repeat disorder may be so dramatic that within a family a child with infantile or early-childhood onset may be diagnosed with what is thought to be an unrelated neurodegenerative disorder years before a parent or grandparent with a CAG repeat expansion becomes symptomatic. In adolescent-onset SCA7, the initial manifestation is typically impaired vision, followed by cerebellar ataxia. In those with adult onset, progressive cerebellar ataxia usually precedes the onset of visual manifestations. While the rate of progression varies in these two age groups, the eventual result for almost all affected individuals is loss of vision, severe dysarthria and dysphagia, and a bedridden state with loss of motor control.","Curated_Disease_Description_Source__c":"ORPHA:208508","GARD_Synonym__c":"adca, type ii; adca2; adcaii; ataxia with pigmentary retinopathy; atxn7 autosomal dominant cerebellar ataxia type ii; autosomal dominant cerebellar ataxia type 2; autosomal dominant cerebellar ataxia type ii; autosomal dominant cerebellar ataxia type ii caused by mutation in atxn7; cerebellar syndrome pigmentary maculopathy; cerebellar syndrome-pigmentary maculopathy syndrome; olivopontocerebellar atrophy iii; opca iii; opca with macular degeneration and external ophthalmoplegia; opca with retinal degeneration; sca7; spinocerebellar ataxia type 7","Name":"Spinocerebellar ataxia 7","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"National Ataxia Foundation","Website__c":"https://ataxia.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Genetics","Tag_Category__c":"Cause;Disease Category;Specialist","category_description":"Genetic diseases affect the DNA, or genetic instructions, which directs how tissues, organs, and body systems function.","curated_tag_name":"Genetic diseases"},{"Tag_Name__c":"Neurology","Tag_Category__c":"Disease Category;Specialist","category_description":"Neurological diseases affect the brain, spinal cord, cranial nerves, autonomic nerves, or other peripheral nerves.","curated_tag_name":"Neurological diseases"},{"Tag_Name__c":"Ophthalmology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Psychiatry","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Ataxia","Tag_Category__c":"Account","curated_tag_name":"Ataxia"},{"Tag_Name__c":"Neuro-Ophthalmology","Tag_Category__c":"Specialist","curated_tag_name":"Neuro-ophthalmic diseases"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=156006","Source__c":"C0752125","Xref__c":"MEDGEN:156006"},{"URL__c":"https://www.omim.org/entry/164500","Source__c":"C0752125; MONDO:0016163","Xref__c":"OMIM:164500"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0050958","Source__c":"MONDO:0016163","Xref__c":"DOID:0050958"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C126562","Source__c":"C0752125; MONDO:0016163","Xref__c":"C126562"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=715726000","Source__c":"C0752125; MONDO:0016163","Xref__c":"715726000"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0752125","Source__c":"C0752125","Xref__c":"C0752125"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0016163","Source__c":"GARD:0020405","Xref__c":"MONDO:0016163"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1256","Source__c":"Gene Review","Xref__c":"NBK1256"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"ATXN7","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"A nonspecific term denoting degeneration of the retinal pigment epithelium and/or retinal photoreceptor cells of the macula lutea.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000608","HPO_Name__c":"Macular degeneration","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An unintentional, oscillating to-and-fro muscle movement about a joint axis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001337","HPO_Synonym__c":"Tremor; Tremors","HPO_Name__c":"Tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001347","HPO_Synonym__c":"Increased deep tendon reflexes; Increased reflexes","HPO_Name__c":"Hyperreflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"Chorea (Greek for 'dance') refers to widespread arrhythmic involuntary movements of a forcible, jerky and restless fashion. It is a random-appearing sequence of one or more discrete involuntary movements or movement fragments. Movements appear random because of variability in timing, duration or location. Each movement may have a distinct start and end. However, movements may be strung together and thus may appear to flow randomly from one muscle group to another. Chorea can involve the trunk, neck, face, tongue, and extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002072","HPO_Synonym__c":"Choreic movements; Choreiform movements","HPO_Name__c":"Chorea","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002310","HPO_Synonym__c":"Orofacial dyskinesias","HPO_Name__c":"Orofacial dyskinesia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"An abnormality of the retina characterized by pigment deposition. It is typically associated with migration and proliferation of macrophages or retinal pigment epithelial cells into the retina; melanin from these cells causes the pigmentary changes. Pigmentary retinopathy is a common final pathway of many retinal conditions and is often associated with visual loss.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000580","HPO_Synonym__c":"Pigmentary retinal deposits; Retinal pigment clumping; Retinal pigmentary clumping; Retinal pigmentary degeneration","HPO_Name__c":"Pigmentary retinopathy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"A type of ataxia characterized by the inability to carry out movements with the correct range and motion across the plane of more than one joint related to incorrect estimation of the distances required for targeted movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001310","HPO_Synonym__c":"Lack of coordination of movement","HPO_Name__c":"Dysmetria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"Difficulty in swallowing.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002015","HPO_Synonym__c":"Difficulty swallowing; Poor swallowing; Swallowing difficulties; Swallowing difficulty","HPO_Name__c":"Dysphagia","Feature_System__c":"Nervous System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"An abnormally slow velocity of the saccadic eye movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000514","HPO_Synonym__c":"Slow eye movements; Slow saccades; Slow visual tracking","HPO_Name__c":"Slow saccadic eye movements","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000648","HPO_Synonym__c":"Optic nerve atrophy; Optic-nerve degeneration","HPO_Name__c":"Optic atrophy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Loss of previously present mental abilities, generally in adults.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001268","HPO_Synonym__c":"Cognitive decline; Cognitive decline, progressive; Intellectual deterioration; Mental deterioration; Progressive cognitive decline","HPO_Name__c":"Mental deterioration","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000639","HPO_Synonym__c":"Involuntary, rapid, rhythmic eye movements","HPO_Name__c":"Nystagmus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002073","HPO_Synonym__c":"Cerebellar ataxia, progressive; Progressive ataxia","HPO_Name__c":"Progressive cerebellar ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001257","HPO_Synonym__c":"Involuntary muscle stiffness, contraction, or spasm; Muscle spasticity; Muscular spasticity","HPO_Name__c":"Spasticity","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"Upturning of the big toe (and sometimes fanning of the other toes) in response to stimulation of the sole of the foot. If the Babinski sign is present it can indicate damage to the corticospinal tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003487","HPO_Synonym__c":"Extensor plantar reflexes; Extensor plantar response; Extensor plantar responses; Positive Babinski sign","HPO_Name__c":"Babinski sign","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"Neuronal degeneration in the cerebellum, pontine nuclei, and inferior olivary nucleus.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002542","HPO_Synonym__c":"Olivopontocerebellar degeneration","HPO_Name__c":"Olivopontocerebellar atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001260","HPO_Synonym__c":"Difficulty articulating speech; Dysarthric speech","HPO_Name__c":"Dysarthria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"A reduction of previously attained ability to see.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000529","HPO_Synonym__c":"Loss of visual acuity; Progressive loss of vision; Progressive vision loss; Progressive visual acuity loss; Progressive visual impairment; Slowly progressive visual loss; Vision loss, progressive; Visual loss, progressive","HPO_Name__c":"Progressive visual loss","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"A vertical gaze palsy with inability to direct the gaze of the eyes downwards.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000623","HPO_Name__c":"Supranuclear ophthalmoplegia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:164500","Feature__r":{"HPO_Description__c":"A neurological condition related to lesions of the basal ganglia leading to typical abnormalities including akinesia (inability to initiate changes in activity and perform volitional movements rapidly and easily), muscular rigidity (continuous contraction of muscles with constant resistance to passive movement), chorea (widespread arrhythmic movements of a forcible, rapid, jerky, and restless nature), athetosis (inability to sustain the muscles of the fingers, toes, or other group of muscles in a fixed position), and akathisia (inability to remain motionless).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002071","HPO_Synonym__c":"Extrapyramidal dysfunction; Extrapyramidal signs; Extrapyramidal symptoms; Extrapyramidal syndrome; Extrapyramidal tract signs","HPO_Name__c":"Abnormality of extrapyramidal motor function","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Ophthalmology","Psychiatry","Neuro-Ophthalmology"],"Account":["Ataxia"]},"synonyms":["adca, type ii"," adca2"," adcaii"," ataxia with pigmentary retinopathy"," atxn7 autosomal dominant cerebellar ataxia type ii"," autosomal dominant cerebellar ataxia type 2"," autosomal dominant cerebellar ataxia type ii"," autosomal dominant cerebellar ataxia type ii caused by mutation in atxn7"," cerebellar syndrome pigmentary maculopathy"," cerebellar syndrome-pigmentary maculopathy syndrome"," olivopontocerebellar atrophy iii"," opca iii"," opca with macular degeneration and external ophthalmoplegia"," opca with retinal degeneration"," sca7"," spinocerebellar ataxia type 7"]}