{"Name":"L-2-hydroxyglutaric aciduria","DiseaseID__c":"GARD:0010472","id":10472,"encodedName":"l-2-hydroxyglutaric-aciduria","IsDeleted":false,"Disease_Name_Full__c":"L-2-hydroxyglutaric aciduria","Xref_IDs__c":"237961001; C1855995; DOID:0050574; HP:0040144; MEDGEN:341029; MONDO:0009370; OMIM:236792; ORPHA:79314","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":5,"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":2,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0009370","Disease_Description__c":"L-2-hydroxyglutaric aciduria is a primarily neurological form of 2-hydroxyglutaric aciduria (see this term) characterized by psychomotor retardation, cerebellar ataxia and variable macrocephaly or epilepsy.","GARD_Name__c":"L-2-hydroxyglutaric aciduria","GARD_Synonym__c":"l-2-hga; l-2-hydroxy-glutaric aciduria; l-2-hydroxyglutaric acidemia; l-2(oh) glutaric aciduria; l2hga","Curated_Disease_Description_Source__c":"GARD:0010472","Curated_Disease_Description__c":"L-2-hydroxyglutaric aciduria is an inherited metabolic condition that is associated with progressive brain damage. Signs and symptoms of this condition typically begin during infancy or early childhood and may include developmental delay, seizures, speech difficulties, macrocephaly and abnormalities in a part of the brain called the cerebellum, which is involved in coordinating movement (i.e. balance and muscle coordination). L-2-hydroxyglutaric aciduria is caused by changes in the L2HGDH gene and is inherited in an autosomal recessive manner.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as a Child","SourceID__c":"ORPHA:79314","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0009370","ORPHANET_ID__c":"ORPHA:79314","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Aciduria l-2-hidroxiglutárica","Spanish_Description_Source__c":"ORPHA:79314","Spanish_Description__c":"La aciduria L-2-hidroxiglutárica es fundamentalmente una forma neurológica de la aciduria 2-hidroxiglutárica (ver este término) caracterizada por retraso psicomotor, ataxia cerebelosa, macrocefalia variable o epilepsia.","Spanish_Disease_Name__c":"aciduria l-2-hidroxiglutárica","Spanish_GARD_Synonym__c":"acidemia l-2-hidroxiglutárica; l-2-hga","Category_Linearization__c":"ORPHA:68367","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":"L-2-hydroxyglutaric aciduria is an inherited metabolic condition that is associated with progressive brain damage. Signs and symptoms of this condition typically begin during infancy or early childhood and may include developmental delay, seizures, speech difficulties, macrocephaly and abnormalities in a part of the brain called the cerebellum, which is involved in coordinating movement (i.e. balance and muscle coordination). L-2-hydroxyglutaric aciduria is caused by changes in the L2HGDH gene and is inherited in an autosomal recessive manner.","Curated_Disease_Description_Source__c":"GARD:0010472","GARD_Synonym__c":"l-2-hga; l-2-hydroxy-glutaric aciduria; l-2-hydroxyglutaric acidemia; l-2(oh) glutaric aciduria; l2hga","Name":"L-2-hydroxyglutaric aciduria","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Childhood Dementia Initiative","Website__c":"https://www.childhooddementia.org/"},{"Account_Name__c":"Metabolic Support UK","Website__c":"https://www.metabolicsupportuk.org"},{"Account_Name__c":"Organic Acidemia Association","Website__c":"https://oaanews.org/"},{"Account_Name__c":"Alex The Leukodystrophy Charity","Website__c":"https://www.alextlc.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":"Inborn Errors of Metabolism","Tag_Category__c":"Cause;Disease Category","category_description":"Inherited metabolic diseases, or inborn errors of metabolism, are a group of genetic diseases that affect the ability of the body's cells to convert food into energy.","curated_tag_name":"Inherited metabolic diseases"},{"Tag_Name__c":"Epilepsy","Tag_Category__c":"Account;Specialist","curated_tag_name":"Epilepsy"},{"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:79314"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C1855995"},{"Type__c":"GTR","Curie__c":"MEDGEN:C3888081"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0010472","Source__c":"RareSource"},{"URL__c":"https://www.orpha.net/en/disease/detail/79314","Source__c":"C1855995; MONDO:0009370; ORPHA:79314","Xref__c":"ORPHA:79314"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=237961001","Source__c":"C1855995; MONDO:0009370","Xref__c":"237961001"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0050574","Source__c":"MONDO:0009370","Xref__c":"DOID:0050574"},{"URL__c":"https://www.omim.org/entry/236792","Source__c":"C1855995; MONDO:0009370; ORPHA:79314","Xref__c":"OMIM:236792"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=341029","Source__c":"C1855995","Xref__c":"MEDGEN:341029"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1855995","Source__c":"C1855995","Xref__c":"C1855995"},{"URL__c":"https://hpo.jax.org/browse/term/HP:0040144","Source__c":"C1855995","Xref__c":"HP:0040144"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0009370","Source__c":"GARD:0010472","Xref__c":"MONDO:0009370"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"L2HGDH","GHR_URL__c":"https://medlineplus.gov/genetics/gene/l2hgdh","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Occipitofrontal (head) circumference greater than 97th centile compared to appropriate, age matched, sex-matched normal standards. Alternatively, a apparently increased size of the cranium.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000256","HPO_Synonym__c":"Increased size of cranium; Increased size of skull; Large head; Large head circumference; Macrocephalus; Macrocrania; Megacephaly","HPO_Name__c":"Macrocephaly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001250","HPO_Synonym__c":"Epileptic seizure; Seizures","HPO_Name__c":"Seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Frequent (30-79%)","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"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007360","HPO_Synonym__c":"Absent/small cerebellum; Absent/underdeveloped cerebellum; Atrophy/Degeneration affecting the cerebellum; Atrophy/Hypoplasia of the cerebellum; Cerebellar hypoplasia/atrophy","HPO_Name__c":"Aplasia/Hypoplasia of the cerebellum","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An acquired language impairment of some or all of the abilities to produce or comprehend speech and to read or write.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002381","HPO_Synonym__c":"Difficulty finding words; Losing words; Loss of words","HPO_Name__c":"Aphasia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Severe intellectual disability (ID) is defined as a type of ID characterized by severely sub-average adaptive functioning and intellectual functioning, with an intelligence quotient (IQ) the range of 20-34.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010864","HPO_Synonym__c":"Early and severe mental retardation; Intellectual disability, severe; Mental retardation, severe; Severe mental retardation","HPO_Name__c":"Severe intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A tumor (abnormal growth of tissue) of the nervous system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004375","HPO_Synonym__c":"Tumor of the nervous system","HPO_Name__c":"Neoplasm of the nervous system","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Atypical behavior is an abnormality in a person's actions that can be controlled or modulated by the will of the individual. While abnormal behaviors can be difficult to control, they are distinct from other abnormal actions that cannot be affected by the individual's will.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000708","HPO_Synonym__c":"Behavioral abnormality; Behavioral changes; Behavioral disorders; Behavioral disturbances; Behavioral problems; Behavioral symptoms; Behavioral/psychiatric abnormalities; Behavioural symptoms; Behavioural/Psychiatric abnormality; Psychiatric disorders; Psychiatric disturbances","HPO_Name__c":"Atypical behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Spastic weakness affecting all four limbs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001285","HPO_Synonym__c":"Spastic quadriparesis","HPO_Name__c":"Spastic tetraparesis","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A disorder of the brain caused by an infectious agent that presents with fever, headache, and an altered level of consciousness. There may also be focal or multifocal neurologic deficits, and focal or generalized seizure activity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002383","HPO_Synonym__c":"Brain inflammation","HPO_Name__c":"Infectious encephalitis","Feature_System__c":"Nervous System; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:79314","HPO_Frequency__c":"Very frequent (80-99%)","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","Inborn Errors of Metabolism"],"Disease Category":["Genetics","Neurology","Inborn Errors of Metabolism"],"Specialist":["Genetics","Neurology","Epilepsy","Neurodevelopmental disabilities","Pediatrics"],"Account":["Epilepsy"]},"synonyms":["l-2-hga"," l-2-hydroxy-glutaric aciduria"," l-2-hydroxyglutaric acidemia"," l-2(oh) glutaric aciduria"," l2hga"]}