{"Name":"Hereditary spastic paraplegia 63","DiseaseID__c":"GARD:0017658","id":17658,"encodedName":"hereditary-spastic-paraplegia-63","IsDeleted":false,"Disease_Name_Full__c":"Hereditary spastic paraplegia 63","Xref_IDs__c":"726610000; C3810295; DOID:0110814; MEDGEN:816625; MONDO:0014305; OMIM:615686; ORPHA:401805","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":4,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0014305","Disease_Description__c":"Autosomal recessive spastic paraplegia type 63 (SPG63) is an extremely rare and complex form of hereditary spastic paraplegia characterized by an onset in infancy of spastic paraplegia (presenting with delayed walking and a scissors gait) associated with short stature, and normal cognition. Periventricular deep white matter changes in the corpus callosum are noted on brain imaging. SPG63 is caused by a homozygous mutation in the <i>AMPD2</i> gene (1p13.3) encoding AMP deaminase 2.","GARD_Name__c":"Hereditary spastic paraplegia 63","GARD_Synonym__c":"ampd2 autosomal recessive complex spastic paraplegia; autosomal recessive complex spastic paraplegia caused by mutation in ampd2; autosomal recessive spastic paraplegia 63; autosomal recessive spastic paraplegia type 63; hereditary spastic paraplegia type 63; spastic paraplegia 63; spastic paraplegia 63, autosomal recessive; spg63","Curated_Disease_Description_Source__c":"MONDO:0014305","Curated_Disease_Description__c":"Autosomal recessive spastic paraplegia type 63 (SPG63) is an extremely rare and complex form of hereditary spastic paraplegia characterized by an onset in infancy of spastic paraplegia (presenting with delayed walking and a scissors gait) associated with short stature, and normal cognition. Periventricular deep white matter changes in the corpus callosum are noted on brain imaging. SPG63 is caused by a homozygous mutation in the AMPD2 gene (1p13.3) encoding AMP deaminase 2.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as an Infant","SourceID__c":"ORPHA:401805","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0014305","ORPHANET_ID__c":"ORPHA:401805","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Paraplejía espástica autosómica recesiva tipo 63","Spanish_Description_Source__c":"ORPHA:401805","Spanish_Description__c":"Es una forma extremadamente poco frecuente y compleja de paraparesia espástica hereditaria caracterizada por paraparesia espástica de inicio en la lactancia (presentan un retraso en la adquisición de la marcha y en tijera) asociada a talla baja y capacidad intelectual normal. Las neuroimágenes cerebrales permiten detectar cambios profundos en la sustancia blanca periventricular del cuerpo calloso. La enfermedad está causada por una mutación en homocigosis en el gen <i>AMPD2</i> (1p13.3) que codifica la AMP desaminasa 2.","Spanish_Disease_Name__c":"paraplejía espástica autosómica recesiva tipo 63","Spanish_GARD_Synonym__c":"spg63","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":"Autosomal recessive spastic paraplegia type 63 (SPG63) is an extremely rare and complex form of hereditary spastic paraplegia characterized by an onset in infancy of spastic paraplegia (presenting with delayed walking and a scissors gait) associated with short stature, and normal cognition. Periventricular deep white matter changes in the corpus callosum are noted on brain imaging. SPG63 is caused by a homozygous mutation in the AMPD2 gene (1p13.3) encoding AMP deaminase 2.","Curated_Disease_Description_Source__c":"MONDO:0014305","GARD_Synonym__c":"ampd2 autosomal recessive complex spastic paraplegia; autosomal recessive complex spastic paraplegia caused by mutation in ampd2; autosomal recessive spastic paraplegia 63; autosomal recessive spastic paraplegia type 63; hereditary spastic paraplegia type 63; spastic paraplegia 63; spastic paraplegia 63, autosomal recessive; spg63","Name":"Hereditary spastic paraplegia 63","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"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:401805"}],"External_Identifier_Disease__c":[{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=726610000","Source__c":"C3810295; MONDO:0014305","Xref__c":"726610000"},{"URL__c":"https://www.orpha.net/en/disease/detail/401805","Source__c":"C3810295; MONDO:0014305; ORPHA:401805","Xref__c":"ORPHA:401805"},{"URL__c":"https://www.omim.org/entry/615686","Source__c":"C3810295; MONDO:0014305; ORPHA:401805","Xref__c":"OMIM:615686"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0110814","Source__c":"MONDO:0014305","Xref__c":"DOID:0110814"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C3810295","Source__c":"C3810295","Xref__c":"C3810295"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=816625","Source__c":"C3810295","Xref__c":"MEDGEN:816625"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0014305","Source__c":"GARD:0017658","Xref__c":"MONDO:0014305"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"AMPD2","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:401805","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A height below that which is expected according to age and sex norms. Although there is no universally accepted definition of short stature, many refer to \\\"short stature\\\" as height more than 2 standard deviations below the mean for age and sex (or below the 3rd percentile for age and sex dependent norms).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004322","HPO_Synonym__c":"Decreased body height; Height less than 3rd percentile; Short stature; Small stature; Stature below 3rd percentile","HPO_Name__c":"Short stature","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:401805","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:401805","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of spastic paraparetic gait in which the muscle tone in the adductors is marked. It is characterized by hypertonia and flexion in the legs, hips and pelvis accompanied by extreme adduction leading to the knees and thighs hitting, or sometimes even crossing, in a scissors-like movement. The opposing muscles (abductors) become comparatively weak from lack of use.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012407","HPO_Synonym__c":"Scissor gait; Scissor walk; Scissoring gait; Scissoring of the lower extremities; Scissoring of the lower limbs; Scissors gait","HPO_Name__c":"Scissor gait","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:401805","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A structural abnormality of the myelinated axons (white matter) located near the cerebral ventricles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002518","HPO_Synonym__c":"Abnormality of the periventricular white matter","HPO_Name__c":"Abnormal periventricular white matter morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:401805","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally low body weight.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004325","HPO_Synonym__c":"Decreased body weight; Decreased weight; Low body weight; Low weight; Weight less than 3rd percentile","HPO_Name__c":"Decreased body weight","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:401805","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:401805","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of motor delay characterized by a delay in acquiring the ability to control the large muscles of the body for walking, running, sitting, and crawling.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002194","HPO_Synonym__c":"Delayed attainment of gross motor milestones; Delayed attainment of gross motor skills; Delayed development of gross motor milestones; Delayed development of gross motor skills; Delayed gross motor milestones; Delayed gross motor skills; Delayed motor skills; Developmental delay, gross motor; Gross motor delay; Limited gross motor development; Limited gross motor skills","HPO_Name__c":"Delayed gross motor development","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:401805","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of skeletal muscular atrophy (which is also known as amyotrophy).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003202","HPO_Synonym__c":"Amyotrophy; Amyotrophy involving the extremities; Muscle atrophy; Muscle atrophy, neurogenic; Muscle degeneration; Muscle hypotrophy; Muscle wasting; Muscular atrophy; Neurogenic muscle atrophy; Neurogenic muscle atrophy, especially in the lower limbs; Neurogenic muscular atrophy","HPO_Name__c":"Skeletal muscle atrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:401805","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A condition in which there is increased muscle tone so that arms or legs, for example, are stiff and difficult to move.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001276","HPO_Synonym__c":"Hypertonicity; Increased muscle tone","HPO_Name__c":"Hypertonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Neuromuscular medicine","Pediatrics"],"Account":["Hereditary Spastic Paraplegia"]},"synonyms":["ampd2 autosomal recessive complex spastic paraplegia"," autosomal recessive complex spastic paraplegia caused by mutation in ampd2"," autosomal recessive spastic paraplegia 63"," autosomal recessive spastic paraplegia type 63"," hereditary spastic paraplegia type 63"," spastic paraplegia 63"," spastic paraplegia 63, autosomal recessive"," spg63"]}