{"Name":"Optic atrophy 2","DiseaseID__c":"GARD:0010199","id":10199,"encodedName":"optic-atrophy-2","IsDeleted":false,"Disease_Name_Full__c":"Optic atrophy 2","Xref_IDs__c":"721200000; C1839576; C537125; DOID:0111443; MEDGEN:326915; MONDO:0010698; OMIM:311050; ORPHA:98890","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":6,"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":6,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0010698","Disease_Description__c":"Early-onset X-linked optic atrophy is a rare form of hereditary optic atrophy, seen in only 4 families to date, with an onset in early childhood, characterized by progressive loss of visual acuity, significant optic nerve pallor and occasionally additional neurological manifestations, with females being unaffected.","GARD_Name__c":"Optic atrophy 2","GARD_Synonym__c":"early-onset x-linked optic atrophy; non-leber type optic atrophy with early-onset; opa2; optic atrophy 2, x-linked; optic atrophy type 2; optic atrophy, non-leber type, with early onset; optic atrophy, x-linked","Curated_Disease_Description_Source__c":"MONDO:0010698","Curated_Disease_Description__c":"Early-onset X-linked optic atrophy is a rare form of hereditary optic atrophy, seen in only 4 families to date, with an onset in early childhood, characterized by progressive loss of visual acuity, significant optic nerve pallor and occasionally additional neurological manifestations, with females being unaffected.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as a Child","SourceID__c":"ORPHA:98890","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0010698","ORPHANET_ID__c":"ORPHA:98890","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Atrofia óptica ligada al cromosoma x de inicio precoz","Spanish_Description_Source__c":"ORPHA:98890","Spanish_Description__c":"La atrofia óptica ligada al X de aparición temprana es una forma poco frecuente de la atrofia óptica hereditaria, descrita en tan sólo cuatro familias hasta la fecha, con una aparición en la primera infancia, caracterizada por una pérdida progresiva de la agudeza visual, palidez significativa del nervio óptico y a veces manifestaciones neurológicas adicionales, sin que las mujeres estén afectadas.","Spanish_Disease_Name__c":"atrofia óptica ligada al cromosoma x de inicio precoz","Spanish_GARD_Synonym__c":"atrofia óptica tipo 2; atrofia óptica tipo no-leber de inicio precoz; opa2","Category_Linearization__c":"ORPHA:93890","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":"Early-onset X-linked optic atrophy is a rare form of hereditary optic atrophy, seen in only 4 families to date, with an onset in early childhood, characterized by progressive loss of visual acuity, significant optic nerve pallor and occasionally additional neurological manifestations, with females being unaffected.","Curated_Disease_Description_Source__c":"MONDO:0010698","GARD_Synonym__c":"early-onset x-linked optic atrophy; non-leber type optic atrophy with early-onset; opa2; optic atrophy 2, x-linked; optic atrophy type 2; optic atrophy, non-leber type, with early onset; optic atrophy, x-linked","Name":"Optic atrophy 2","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"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":"Neuro-Ophthalmology","Tag_Category__c":"Specialist","curated_tag_name":"Neuro-ophthalmic diseases"},{"Tag_Name__c":"Neurodevelopmental disabilities","Tag_Category__c":"Specialist","curated_tag_name":"Neurodevelopmental disabilities"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Childhood","Provided_By__c":"ORPHA:98890"}],"External_Identifier_Disease__c":[{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=721200000","Source__c":"C1839576; MONDO:0010698","Xref__c":"721200000"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0111443","Source__c":"MONDO:0010698","Xref__c":"DOID:0111443"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C537125","Source__c":"MONDO:0010698","Xref__c":"C537125"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=326915","Source__c":"C1839576","Xref__c":"MEDGEN:326915"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1839576","Source__c":"C1839576","Xref__c":"C1839576"},{"URL__c":"https://www.orpha.net/en/disease/detail/98890","Source__c":"C1839576; MONDO:0010698; ORPHA:98890","Xref__c":"ORPHA:98890"},{"URL__c":"https://www.omim.org/entry/311050","Source__c":"C1839576; MONDO:0010698; ORPHA:98890","Xref__c":"OMIM:311050"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0010698","Source__c":"GARD:0010199","Xref__c":"MONDO:0010698"}],"Inheritance__c":["X-linked recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Involuntary movements characterized by both athetosis (inability to sustain muscles in a fixed position) and chorea (widespread jerky arrhythmic movements).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001266","HPO_Synonym__c":"Choreoathetoid movements","HPO_Name__c":"Choreoathetosis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:98890","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:98890","HPO_Frequency__c":"Occasional (5-29%)","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:98890","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Unstable emotional experiences and frequent mood changes; emotions that are easily aroused, intense, and/or disproportionate to events and circumstances.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000712","HPO_Name__c":"Emotional lability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A functional anomaly of the nervous system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012638","HPO_Synonym__c":"Abnormality of nervous system physiology","HPO_Name__c":"Abnormal nervous system physiology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of ataxia characterized by the impairment of the ability to perform rapidly alternating movements, such as pronating and supinating his or her hand on the dorsum of the other hand as rapidly as possible.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002075","HPO_Synonym__c":"Difficulty performing quick and alternating movements; Dysdiadochokinesia","HPO_Name__c":"Dysdiadochokinesis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of kinetic tremor that occurs during target directed movement is called intention tremor. That is, an oscillatory cerebellar ataxia that tends to be absent when the limbs are inactive and during the first part of voluntary movement but worsening as the movement continues and greater precision is required (e.g., in touching a target such as the patient's nose or a physician's finger).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002080","HPO_Name__c":"Intention tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","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":"ORPHA:98890","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007663","HPO_Synonym__c":"Decreased central vision; Decreased clarity of vision; Decreased visual acuity; Poor visual acuity","HPO_Name__c":"Reduced visual acuity","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Occasional (5-29%)","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"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction in the speed at which electrical signals propagate along the axon of a neuron.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000762","HPO_Synonym__c":"Decreased NCV; Decreased nerve conduction velocities; Delayed nerve conduction velocity; Reduced nerve conduction velocities; Slow nerve conduction velocity; Slowed nerve conduction velocities","HPO_Name__c":"Decreased nerve conduction velocity","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_NCV"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A clinical sign indicating a lapse of posture and is usually manifest by a bilateral flapping tremor at the wrist, metacarpophalangeal, and hip joints.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012164","HPO_Name__c":"Asterixis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An area of depressed vision located at the point of fixation and that interferes with central vision.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000603","HPO_Synonym__c":"Central blind spot; Central scotomata","HPO_Name__c":"Central scotoma","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A pale yellow discoloration of the optic disc (the area of the optic nerve head in the retina). The optic disc normally has a pinkish hue with a central yellowish depression.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000543","HPO_Synonym__c":"Pale optic disc","HPO_Name__c":"Optic disc pallor","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An anomaly in the ability to discriminate between or recognize colors.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000551","HPO_Synonym__c":"Abnormal color vision; Abnormality of color vision; Disturbed color vision","HPO_Name__c":"Color vision defect","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:98890","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The term intellectual disability or intellectual developmental disorder is used to describe significantly sub-average intellectual and adaptive functioning based on clinical assessment and as measured by individually administered, appropriately normed, standardized and validated tests of intellectual functioning and adaptive behavior, with onset during the developmental period from infancy through adolescence.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001249","HPO_Synonym__c":"Intellectual disability; Mental deficiency; Mental retardation; Mental retardation, nonspecific; Mental-retardation; Nonprogressive intellectual disability; Nonprogressive mental retardation","HPO_Name__c":"Intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Ophthalmology","Neuro-Ophthalmology","Neurodevelopmental disabilities","Pediatrics"]},"synonyms":["early-onset x-linked optic atrophy"," non-leber type optic atrophy with early-onset"," opa2"," optic atrophy 2, x-linked"," optic atrophy type 2"," optic atrophy, non-leber type, with early onset"," optic atrophy, x-linked"]}