{"Name":"Maternally-inherited spastic paraplegia","DiseaseID__c":"GARD:0021433","id":21433,"encodedName":"maternally-inherited-spastic-paraplegia","IsDeleted":false,"Disease_Name_Full__c":"Maternally-inherited spastic paraplegia","Xref_IDs__c":"C4755299; MEDGEN:1663227; MONDO:0017917; ORPHA:320360","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":3,"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":1,"Description_Source__c":"MONDO:0017917","Disease_Description__c":"A rare complex hereditary spastic paraplegia characterized by adulthood-onset of slowly progressive, bilateral, mainly lower limb spasticity and distal weakness associated with lower limb pain, hyperreflexia, and reduced vibration sense. Axonal neuropathy is frequently observed on electromyography and nerve conduction examination.","GARD_Name__c":"Maternally-inherited spastic paraplegia","GARD_Synonym__c":"maternally-inherited spg; mitochondrially encoded atp synthase membrane subunit 6-related mitochondrial spastic paraplegia; mt-atp6-related mitochondrial spastic paraplegia","Curated_Disease_Description_Source__c":"ORPHA:320360","Curated_Disease_Description__c":"MT-ATP6-related mitochondrial spastic paraplegia is a rare, genetic, complex hereditary spastic paraplegia disorder characterized by adulthood-onset of slowly progressive, bilateral, mainly lower limb spasticity and distal weakness associated with lower limb pain, hyperreflexia, and reduced vibration sense. Axonal neuropathy is frequently observed on electromyography and nerve conduction examination.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as an Adult","SourceID__c":"ORPHA:320360","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0017917","ORPHANET_ID__c":"ORPHA:320360","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Paraplejía espástica mitocondrial asociada a mt-atp6","Spanish_Description_Source__c":"ORPHA:320360","Spanish_Description__c":"La paraparesia espástica mitocondrial asociada a MT-ATP6, es un trastorno genético poco frecuente, de paraparesia espástica hereditaria compleja caracterizada por un inicio en la edad adulta de espasticidad y debilidad distal bilateral, principalmente en las extremidades inferiores, lentamente progresiva. Está asociada con dolor en las extremidades inferiores, hiperreflexia y disminución de la sensibilidad vibratoria. Con frecuencia, se observa, neuropatía axonal en la electromiografía y en el estudio de conducción nerviosa.","Spanish_Disease_Name__c":"paraplejía espástica mitocondrial asociada a mt-atp6","Spanish_GARD_Synonym__c":"paraplejía espástica de herencia materna; spg de herencia materna","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":"MT-ATP6-related mitochondrial spastic paraplegia is a rare, genetic, complex hereditary spastic paraplegia disorder characterized by adulthood-onset of slowly progressive, bilateral, mainly lower limb spasticity and distal weakness associated with lower limb pain, hyperreflexia, and reduced vibration sense. Axonal neuropathy is frequently observed on electromyography and nerve conduction examination.","Curated_Disease_Description_Source__c":"ORPHA:320360","GARD_Synonym__c":"maternally-inherited spg; mitochondrially encoded atp synthase membrane subunit 6-related mitochondrial spastic paraplegia; mt-atp6-related mitochondrial spastic paraplegia","Name":"Maternally-inherited spastic paraplegia","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Spastic Paraplegia Foundation","Website__c":"https://sp-foundation.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":"Hereditary Spastic Paraplegia","Tag_Category__c":"Account","curated_tag_name":"Hereditary spastic paraplegia"},{"Tag_Name__c":"Neuromuscular medicine","Tag_Category__c":"Specialist","curated_tag_name":"Neuromuscular medicine"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Adult","Provided_By__c":"ORPHA:320360"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1663227","Source__c":"C4755299","Xref__c":"MEDGEN:1663227"},{"URL__c":"https://www.orpha.net/en/disease/detail/320360","Source__c":"C4755299; MONDO:0017917; ORPHA:320360","Xref__c":"ORPHA:320360"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4755299","Source__c":"C4755299","Xref__c":"C4755299"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=778048001","Source__c":"C4755299","Xref__c":"778048001"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0017917","Source__c":"GARD:0021433","Xref__c":"MONDO:0017917"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"MT-ATP6","GHR_URL__c":"https://medlineplus.gov/genetics/gene/mt-atp6","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Mitochondrial inheritance"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008969","HPO_Name__c":"Leg muscle stiffness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A decrease in the ability to perceive vibration in the legs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002166","HPO_Synonym__c":"Decreased lower limb vibratory sense; Decreased vibratory sense in lower limbs; Decreased vibratory sense in the lower extremities; Decreased vibratory sense in the lower limbs; Diminished vibratory sensation in the legs; Distal sensory loss, especially vibratory sense; Distal vibratory impairment of the lower limbs; Impaired vibration sensation in the lower limbs","HPO_Name__c":"Impaired vibration sensation in the lower limbs","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","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:320360","HPO_Frequency__c":"Excluded (0%)","Feature__r":{"HPO_Description__c":"Abnormally increased level of blood lactate (2-hydroxypropanoic acid). Lactate is produced from pyruvate by lactate dehydrogenase during normal metabolism. The terms lactate and lactic acid are often used interchangeably but lactate (the component measured in blood) is strictly a weak base whereas lactic acid is the corresponding acid. Lactic acidosis is often used clinically to describe elevated lactate but should be reserved for cases where there is a corresponding acidosis (pH below 7.35).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002151","HPO_Synonym__c":"Increased blood lactate; Increased serum lactate","HPO_Name__c":"Increased circulating lactate concentration","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A myocardial disorder in which the heart muscle is structurally and functionally abnormal, in the absence of coronary artery disease, hypertension, valvular disease and congenital heart disease sufficient to cause the observed myocardial abnormality.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001638","HPO_Synonym__c":"Disease of the heart muscle","HPO_Name__c":"Cardiomyopathy","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of arrhythmia that originates above the ventricles, whereby the electrical impulse propagates down the normal His Purkinje system similar to normal sinus rhythm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005115","HPO_Synonym__c":"Supraventricular arrhythmias","HPO_Name__c":"Supraventricular arrhythmia","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Functional neurological abnormalities related to dysfunction of the pyramidal tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007256","HPO_Synonym__c":"Corticospinal signs; Pyramidal signs; Pyramidal tract signs","HPO_Name__c":"Abnormal pyramidal sign","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A group of abnormalities characterized by hyperglycemia and glucose intolerance.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000819","HPO_Name__c":"Diabetes mellitus","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007020","HPO_Name__c":"Progressive spastic paraplegia","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality characterized by disruption of the normal functioning of peripheral axons.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003477","HPO_Synonym__c":"Axonal neuropathy; Axonal peripheral neuropathy","HPO_Name__c":"Peripheral axonal neuropathy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:320360","HPO_Frequency__c":"Excluded (0%)","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:320360","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduced strength of the distal musculature of the legs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0009053","HPO_Synonym__c":"Distal muscle weakness in lower limbs; Muscle weakness, lower limb, distal","HPO_Name__c":"Distal lower limb muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) localized to the leg.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012514","HPO_Synonym__c":"Leg pain; Lower limb pain","HPO_Name__c":"Lower limb pain","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Occasional (5-29%)","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:320360","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The term gait disturbance can refer to any disruption of the ability to walk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001288","HPO_Synonym__c":"Abnormal gait; Abnormal walk; Difficulty in walking; Gait abnormalities; Gait difficulties; Gait disturbances; Impaired gait; Walking disability","HPO_Name__c":"Gait disturbance","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:320360","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Spasticity (velocity-dependent increase in tonic stretch reflexes with increased muscle tone and hyperexcitable tendon reflexes) in the muscles of the lower limbs, hips, and pelvis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002061","HPO_Synonym__c":"Lower extremities spasticity; Lower extremity spasticity; Spastic lower extremities; Spastic lower extremity; Spastic lower limb; Spastic lower limbs; Spasticity in lower extremities; Spasticity in lower extremity; Spasticity in lower limb; Spasticity in lower limbs; Spasticity of lower extremities; Spasticity of lower extremity; Spasticity of lower limb; Spasticity of lower limbs","HPO_Name__c":"Lower limb spasticity","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Neuromuscular medicine"],"Account":["Hereditary Spastic Paraplegia"]},"synonyms":["maternally-inherited spg"," mitochondrially encoded atp synthase membrane subunit 6-related mitochondrial spastic paraplegia"," mt-atp6-related mitochondrial spastic paraplegia"]}