{"Name":"Spinocerebellar ataxia type 42","DiseaseID__c":"GARD:0017811","id":17811,"encodedName":"spinocerebellar-ataxia-type-42","IsDeleted":false,"Disease_Name_Full__c":"Spinocerebellar ataxia type 42","Xref_IDs__c":"1208513005; C171269; C4225205; DOID:0111742; MEDGEN:902592; MONDO:0014776; OMIM:616795; ORPHA:458803","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":4,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":"1 to 8,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":3,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":4,"Description_Source__c":"ORPHA:458803","Disease_Description__c":"Spinocerebellar ataxia type 42 is a rare, autosomal dominant cerebellar ataxia characterized by pure and slowly progressive cerebellar signs combining gait instability, dysarthria, nystagmus, saccadic eye movements and diplopia. Less frequent clinical signs and symptoms include spasticity, hyperreflexia, decreased distal vibration sense, urinary urgency or incontinence and postural tremor.","GARD_Name__c":"Spinocerebellar ataxia type 42","GARD_Synonym__c":"sca42; spinocerebellar ataxia 42","Curated_Disease_Description_Source__c":"ORPHA:458803","Curated_Disease_Description__c":"A rare, autosomal dominant cerebellar ataxia characterized by pure and slowly progressive cerebellar signs combining gait instability, dysarthria, nystagmus, saccadic eye movements and diplopia. Less frequent clinical signs and symptoms include spasticity, hyperreflexia, decreased distal vibration sense, urinary urgency or incontinence and postural tremor.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"at a variety of ages","SourceID__c":"ORPHA:458803","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0014776","ORPHANET_ID__c":"ORPHA:458803","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Ataxia espinocerebelosa tipo 42","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"ataxia espinocerebelosa tipo 42","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":"A rare, autosomal dominant cerebellar ataxia characterized by pure and slowly progressive cerebellar signs combining gait instability, dysarthria, nystagmus, saccadic eye movements and diplopia. Less frequent clinical signs and symptoms include spasticity, hyperreflexia, decreased distal vibration sense, urinary urgency or incontinence and postural tremor.","Curated_Disease_Description_Source__c":"ORPHA:458803","GARD_Synonym__c":"sca42; spinocerebellar ataxia 42","Name":"Spinocerebellar ataxia type 42","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"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":"Psychiatry","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Ataxia","Tag_Category__c":"Account","curated_tag_name":"Ataxia"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Elderly","Provided_By__c":"ORPHA:458803"},{"Age_At_Onset__c":"Childhood","Provided_By__c":"ORPHA:458803"},{"Age_At_Onset__c":"Adult","Provided_By__c":"ORPHA:458803"},{"Age_At_Onset__c":"Adolescent","Provided_By__c":"ORPHA:458803"}],"External_Identifier_Disease__c":[{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C171269","Source__c":"C4225205; MONDO:0014776","Xref__c":"C171269"},{"URL__c":"https://www.orpha.net/en/disease/detail/458803","Source__c":"C4225205; MONDO:0014776; ORPHA:458803","Xref__c":"ORPHA:458803"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0111742","Source__c":"MONDO:0014776","Xref__c":"DOID:0111742"},{"URL__c":"https://www.omim.org/entry/616795","Source__c":"C4225205; MONDO:0014776; ORPHA:458803","Xref__c":"OMIM:616795"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4225205","Source__c":"C4225205","Xref__c":"C4225205"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=902592","Source__c":"C4225205","Xref__c":"MEDGEN:902592"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0014776","Source__c":"GARD:0017811","Xref__c":"MONDO:0014776"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=1208513005","Source__c":"C4225205","Xref__c":"1208513005"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"CACNA1G","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Urge incontinence is the strong, sudden need to urinate.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000012","HPO_Synonym__c":"Overactive bladder; Urgent micturition; Urinary urgency","HPO_Name__c":"Urinary urgency","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002317","HPO_Synonym__c":"Gait instability; Unsteady walk","HPO_Name__c":"Unsteady gait","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A skin abnormality characterized by redness and irritation, with thick, red skin that displays flaky, silver-white patches (scales).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003765","HPO_Synonym__c":"Psoriasis","HPO_Name__c":"Psoriasiform dermatitis","Feature_System__c":"Skin System; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Involuntary, fine, continuous, undulating contractions of the eyelid.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0031166","HPO_Synonym__c":"Myokymia orbicularis; Orbicularis myokymia","HPO_Name__c":"Eyelid myokymia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A resting tremor occurs when muscles are at rest and becomes less noticeable or disappears when the affected muscles are moved. Resting tremors are often slow and coarse.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002322","HPO_Synonym__c":"Rest tremor; Resting tremor; Tremor at rest","HPO_Name__c":"Resting tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of tremors that is triggered by holding an arm in a fixed position.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007351","HPO_Synonym__c":"Postural tremor of arms","HPO_Name__c":"Upper limb postural tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Cerebellar atrophy is defined as a cerebellum with initially normal structures, in a posterior fossa with normal size, which displays enlarged fissures (interfolial spaces) in comparison to the foliae secondary to loss of tissue. Cerebellar atrophy implies irreversible loss of tissue and result from an ongoing progressive disease until a final stage is reached or a single injury, e.g. an intoxication or infectious event.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001272","HPO_Synonym__c":"Atrophic cerebellum; Degeneration of cerebellum","HPO_Name__c":"Cerebellar atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Any structural abnormality of the cerebellum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001317","HPO_Synonym__c":"Abnormality of the cerebellum; Cerebellar abnormalities; Cerebellar abnormality; Cerebellar anomaly; Cerebellar signs","HPO_Name__c":"Abnormal cerebellum morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of tracking eye movements in which smooth pursuit is interrupted by an abnormally high number of saccadic movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001152","HPO_Synonym__c":"Saccadic pursuit movements; Saccadic slow pursuit; Saccadic smooth pursuit","HPO_Name__c":"Saccadic smooth pursuit interruptions","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000486","HPO_Synonym__c":"Cross-eyed; Squint; Squint eyes","HPO_Name__c":"Strabismus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Loss of the ability to control the urinary bladder leading to involuntary urination.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000020","HPO_Synonym__c":"Bladder incontinence; Loss of bladder control","HPO_Name__c":"Urinary incontinence","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","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":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Wasting (atrophy) of the vermis of cerebellum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006855","HPO_Synonym__c":"Atrophy of cerebellar vermis; Atrophy of the cerebellar vermis; Vermian atrophy","HPO_Name__c":"Cerebellar vermis atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007366","HPO_Synonym__c":"Brainstem atrophy","HPO_Name__c":"Atrophy/Degeneration affecting the brainstem","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A brighter than expected signal on magnetic resonance imaging emanating from the cerebral white matter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030890","HPO_Synonym__c":"White matter hyperintensity","HPO_Name__c":"Hyperintensity of cerebral white matter on MRI","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Imaging_MRI"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Horizontal nystagmus made apparent by looking to the right or to the left.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007979","HPO_Synonym__c":"Nystagmus, horizontal, gaze-evoked","HPO_Name__c":"Gaze-evoked horizontal nystagmus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An unintentional, oscillating to-and-fro muscle movement affecting head movement.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002346","HPO_Synonym__c":"Head tremor","HPO_Name__c":"Head tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Inability to develop or maintain an erection of the penis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000802","HPO_Synonym__c":"Difficulty getting a full erection; Difficulty getting an erection","HPO_Name__c":"Impotence","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Diplopia is a condition in which a single object is perceived as two images, it is also known as double vision.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000651","HPO_Synonym__c":"Double vision","HPO_Name__c":"Diplopia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A decrease in the level of N-acetyl aspartate in the brain identified by magnetic resonance spectroscopy (MRS).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012708","HPO_Synonym__c":"MR Spectroscopy: N-acetylaspartate low in brain; Reduced brain N-acetyl aspartate level by magnetic resonance spectroscopy","HPO_Name__c":"Reduced brain N-acetyl aspartate level by MRS","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Imaging_MRI"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Saccadic undershoot, i.e., a saccadic eye movement that has less than the magnitude that would be required to gain fixation of the object.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000571","HPO_Name__c":"Hypometric saccades","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal sensation of spinning while the body is actually stationary.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002321","HPO_Synonym__c":"Dizzy spell","HPO_Name__c":"Vertigo","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Frequently experiencing feelings of being down, miserable, and/or hopeless; struggling to recover from these moods; having a pessimistic outlook on the future; feeling a pervasive sense of shame; having a low self-worth; experiencing thoughts of suicide and engaging in suicidal behavior.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000716","HPO_Synonym__c":"Depression; Depressive episode; Depressivity","HPO_Name__c":"Depression","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A degenerative disease of the brain characterized by the insidious onset of dementia. Impairment of memory, judgment, attention span, and problem solving skills are followed by severe apraxia and a global loss of cognitive abilities. The condition primarily occurs after age 60, and is marked pathologically by severe cortical atrophy and the triad of senile plaques, neurofibrillary tangles, and neuropil threads.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002511","HPO_Synonym__c":"Alzheimer disease; Late-onset form of familial Alzheimer disease","HPO_Name__c":"Alzheimer disease","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Spasticity is manifested by increased stretch reflex which is intensified with movement velocity. This results in excessive and inappropriate muscle activation which can contribute to muscle hypertonia. Spastic gait is characterized by manifestations such as muscle hypertonia, stiff knee, and circumduction of the leg.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002064","HPO_Synonym__c":"Spastic walk","HPO_Name__c":"Spastic gait","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A deviation from normal of the neurological development of a child, which may include any or all of the aspects of the development of personal, social, gross or fine motor, and cognitive abilities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012759","HPO_Name__c":"Neurodevelopmental abnormality","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A decrease in the ability to perceive vibration at the ankles. Clinically, this is usually tested with a tuning fork which vibrates at 128 Hz and is applied to the malleoli of the ankles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006938","HPO_Synonym__c":"Decreased vibration sense at ankles; Decreased vibration sense in feet; Impaired vibration sensation at ankles","HPO_Name__c":"Impaired vibration sensation at ankles","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of an abnormal lateral curvature of the spine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002650","HPO_Name__c":"Scoliosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:458803","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of ataxia characterized by the impairment of the ability to coordinate the movements required for normal walking. Gait ataxia is characteirzed by a wide-based staggering gait with a tendency to fall.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002066","HPO_Synonym__c":"Ataxia of gait; Ataxic gait; Inability to coordinate movements when walking","HPO_Name__c":"Gait ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Psychiatry","Pediatrics"],"Account":["Ataxia"]},"synonyms":["sca42"," spinocerebellar ataxia 42"]}