{"Name":"Neurodevelopmental disorder with progressive spasticity and brain white matter abnormalities","DiseaseID__c":"GARD:0010447","id":10447,"encodedName":"neurodevelopmental-disorder-with-progressive-spasticity-and-brain-white-matter-abnormalities","IsDeleted":false,"Disease_Name_Full__c":"Neurodevelopmental disorder with progressive spasticity and brain white matter abnormalities","Xref_IDs__c":"C5436628; C567853; MEDGEN:1736667; MONDO:0033613; OMIM:619026; ORPHA:641353","USA_Estimate__c":null,"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":null,"No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":2,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MEDGEN:C0154697","Disease_Description__c":"Cerebral palsy (CP) is defined as a nonprogressive but not unchanging disorder of posture or movement, caused by an abnormality of the brain and first evident at the stage of rapid brain development (Hughes and Newton, 1992). The most common forms result from factors surrounding difficulties before or at birth, such as severe perinatal asphyxia, congenital infection, prematurity, and multiple pregnancy (Blair and Stanley, 1988; Stanley, 1994). More rarely, familial clustering or absence of pre- or postpartum events indicate that there are genetic forms of the disorder (Lynex et al., 2004).Cerebral palsy can be classified according to the type of movement disorder: spastic cerebral palsy accounts for approximately 60% of cases and can be subdivided into hemiplegic, diplegic, quadriplegic, and monoplegic types, whereas other forms include athetoid/dyskinetic, ataxic (605388), and mixed (Gustavson et al., 1969).Genetic Heterogeneity of Spastic Quadriplegic Cerebral PalsySee also CPSQ2 (612900), caused by deletion of the ANKRD15 gene (KANK1; 607704) inherited on the paternal allele, and CPSQ3 (617008), caused by mutation in the ADD3 gene (601568) on 10q24.Related phenotypes that were formerly classified in the CPSQ series include spastic paraplegia-47 (SPG47; 614066), spastic paraplegia-50 (SPG50; 612936), spastic paraplegia-51 (SPG51; 613744), and spastic paraplegia-52 (614067).","GARD_Name__c":"Neurodevelopmental disorder with progressive spasticity and brain white matter abnormalities","GARD_Synonym__c":"cerebral palsy, spastic quadriplegic, 1; cerebral palsy, spastic quadriplegic, type 1; infantile neurodegeneration-progressive spasticity-intellectual disability-white matter lesions syndrome; nedswma","Curated_Disease_Description_Source__c":"MEDGEN:C0154697","Curated_Disease_Description__c":"A rare genetic neurological syndrome of variable severity characterized by progressive spasticity affecting predominantly the lower limbs. Most patients manifest global developmental delay, moderate to severe intellectual disability and white matter abnormalities in infancy complicated by variable features including seizures, episodic respiratory failure, joint contractures and ocular problems. Some patients have normal early development until later childhood followed by regression in motor, cognitive and language skills over time. Some patients manifest only spastic paraplegia.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":null,"Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0033613","ORPHANET_ID__c":"ORPHA:641353","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome infantil de neurodegeneración-espasticidad progresiva-discapacidad intelectual-lesiones de la sustancia blanca","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"síndrome infantil de neurodegeneración-espasticidad progresiva-discapacidad intelectual-lesiones de la sustancia blanca","Spanish_GARD_Synonym__c":"encefalopatía similar a leigh asociada a hpdl; encefalopatía similar a leigh asociada al gen hpdl; síndrome infantil de neurodegeneración-espasticidad progresiva-discapacidad intelectual-lesiones de la sustancia blanca asociado a hpdl; síndrome infantil de neurodegeneración-espasticidad progresiva-discapacidad intelectual-lesiones de la sustancia blanca asociado al gen hpdl","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 genetic neurological syndrome of variable severity characterized by progressive spasticity affecting predominantly the lower limbs. Most patients manifest global developmental delay, moderate to severe intellectual disability and white matter abnormalities in infancy complicated by variable features including seizures, episodic respiratory failure, joint contractures and ocular problems. Some patients have normal early development until later childhood followed by regression in motor, cognitive and language skills over time. Some patients manifest only spastic paraplegia.","Curated_Disease_Description_Source__c":"MEDGEN:C0154697","GARD_Synonym__c":"cerebral palsy, spastic quadriplegic, 1; cerebral palsy, spastic quadriplegic, type 1; infantile neurodegeneration-progressive spasticity-intellectual disability-white matter lesions syndrome; nedswma","Name":"Neurodevelopmental disorder with progressive spasticity and brain white matter a","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Childhood Dementia Initiative","Website__c":"https://www.childhooddementia.org/"},{"Account_Name__c":"United Cerebral Palsy","Website__c":"https://www.ucp.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":"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":"Neonatal","Provided_By__c":"ORPHA:641353"},{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:641353"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C2751938"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.omim.org/entry/619026","Source__c":"C5436628; MONDO:0033613; ORPHA:641353","Xref__c":"OMIM:619026"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1736667","Source__c":"C5436628","Xref__c":"MEDGEN:1736667"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C567853","Source__c":"MONDO:0033613","Xref__c":"C567853"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C5436628","Source__c":"C5436628","Xref__c":"C5436628"},{"URL__c":"https://www.orpha.net/en/disease/detail/641353","Source__c":"MONDO:0033613","Xref__c":"ORPHA:641353"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0033613","Source__c":"GARD:0010447","Xref__c":"MONDO:0033613"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"HPDL","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000218","HPO_Synonym__c":"Elevated palate; High arched palate; High palate; High, arched palate; High-arched palate; Increased palatal height; Palate high-arched; Palate, high-arched","HPO_Name__c":"High palate","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001531","HPO_Synonym__c":"Failure to thrive in first year of life; Faltering weight in infancy; Weight faltering in infancy","HPO_Name__c":"Failure to thrive in infancy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","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":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Increased concentration of lactate in the cerebrospinal fluid.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002490","HPO_Synonym__c":"Hyperlactatorachia; Increased cerebrospinal fluid lactate; Increased CSF lactic acid","HPO_Name__c":"Increased CSF lactate","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the cerebral white matter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002500","HPO_Synonym__c":"Abnormality of subcortical white matter; Abnormality of the cerebral white matter; Cerebral white matter abnormalities; Leukoaraiosis; White matter abnormalities; White matter alterations","HPO_Name__c":"Abnormal cerebral white matter morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Anteriorly-facing nostrils viewed with the head in the Frankfurt horizontal and the eyes of the observer level with the eyes of the subject. This gives the appearance of an upturned nose (upturned nasal tip).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000463","HPO_Synonym__c":"Anteverted nose; Anteverted nostrils; Nasal tip, upturned; Nostrils anteverted; Upturned nares; Upturned nasal tip; Upturned nose; Upturned nostrils","HPO_Name__c":"Anteverted nares","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","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"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduced speed of conduction of the action potential along a sensory nerve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003448","HPO_Synonym__c":"Decreased sensory NCV; Decreased sensory nerve conduction velocities","HPO_Name__c":"Decreased sensory nerve conduction velocity","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_NCV"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A deficiency or slowing down of growth pre- and postnatally.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001510","HPO_Synonym__c":"Delayed growth; Growth deficiency; Growth delay; Growth failure; Growth retardation; Poor growth; Retarded growth","HPO_Name__c":"Growth delay","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Mid upper eyelash length >10 mm or increased length of the eyelashes (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000527","HPO_Synonym__c":"Ciliary trichomegaly; Eyelash trichomegaly; Increased length of eyelashes; Long eyelashes; Unusually long eyelashes","HPO_Name__c":"Long eyelashes","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A flexion contracture is a bent (flexed) joint that cannot be straightened actively or passively. It is thus a chronic loss of joint motion due to structural changes in muscle, tendons, ligaments, or skin that prevents normal movement of joints.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001371","HPO_Synonym__c":"Flexed joint that cannot be straightened; Flexion contractures; Flexion contractures of joints","HPO_Name__c":"Flexion contracture","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Loss of developmental skills, as manifested by loss of developmental milestones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002376","HPO_Synonym__c":"Loss of acquired milestones; Loss of developmental milestones; Loss of milestones; Mental deterioration in childhood; Neurodevelopmental regression; Psychomotor regression; Psychomotor regression beginning in infancy; Psychomotor regression in infants; Psychomotor regression, progressive","HPO_Name__c":"Developmental regression","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","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":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A form of strabismus with one or both eyes turned inward ('crossed') to a relatively severe degree, usually defined as 10 diopters or more.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000565","HPO_Synonym__c":"Inward turning cross eyed","HPO_Name__c":"Esotropia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Paralysis of the external ocular muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000544","HPO_Synonym__c":"Chronic progressive external ophthalmoplegia; CPEO; Ophthalmoplegia externa; Paralysis or weakness of muscles within or surrounding outer part of eye; Progressive paralysis or weakness of muscles of eye motility; Progressive paralysis or weakness of muscles of eye movement","HPO_Name__c":"External ophthalmoplegia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","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":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormally high degree of muscle fiber size variation. This phenotypic feature can be observed upon muscle biopsy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003557","HPO_Synonym__c":"Increased fiber size variation; Increased variability in muscle fiber size; Increased variation in fiber size; Increased variation in muscle fiber size; Variation in muscle fiber size","HPO_Name__c":"Increased variability in muscle fiber diameter","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Diminished length of the neck.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000470","HPO_Synonym__c":"Decreased length of neck; Short neck","HPO_Name__c":"Short neck","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Head circumference below 2 standard deviations below the mean for age and sex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000252","HPO_Synonym__c":"Abnormally small cranium; Abnormally small skull; Decreased circumference of cranium; Decreased size of cranium; Decreased size of skull; Reduced head circumference; small cranium; Small head circumference","HPO_Name__c":"Microcephaly","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality in which the mandible is mislocalised posteriorly.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000278","HPO_Synonym__c":"Lower jaw retrognathia; Lower jaw retrusion; Mandibular retrognathia; Mandibular retrusion; Receding chin; Receding lower jaw; Receding mandible; Retrognathia of lower jaw; Retrusion of lower jaw; Weak chin; Weak jaw","HPO_Name__c":"Retrognathia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of dystonia that affects the midline muscles, i.e., the chest, abdominal, and back muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002530","HPO_Synonym__c":"Truncal dystonia","HPO_Name__c":"Axial dystonia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Distance between nasal base and midline upper lip vermilion border more than 2 SD above the mean. Alternatively, an apparently increased distance between nasal base and midline upper lip vermilion border.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000343","HPO_Synonym__c":"Elongated philtrum; Increased height of philtrum; Increased length of philtrum; Increased vertical dimension of philtrum; Vertical hyperplasia of philtrum","HPO_Name__c":"Long philtrum","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Habitual flow of saliva out of the mouth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002307","HPO_Synonym__c":"Dribbling; Drooling; Sialorrhea","HPO_Name__c":"Drooling","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A manifest or latent ocular deviation in which one or both eyes tends to deviate temporally.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0020049","HPO_Synonym__c":"Divergent strabismus","HPO_Name__c":"Exodeviation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A manifest or latent ocular deviation in which one or both eyes tends to deviate nasally.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0020045","HPO_Synonym__c":"Convergent squint; Convergent strabismus","HPO_Name__c":"Esodeviation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Interpupillary distance more than 2 SD above the mean (alternatively, the appearance of an increased interpupillary distance or widely spaced eyes).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000316","HPO_Synonym__c":"Excessive orbital separation; Increased distance between eye sockets; Increased distance between eyes; Increased interpupillary distance; Ocular hypertelorism; Wide-set eyes; Widely spaced eyes; Widened interpupillary distance","HPO_Name__c":"Hypertelorism","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Underdevelopment of the corpus callosum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002079","HPO_Synonym__c":"Corpus callosum hypoplasia; Hypoplasia of corpus callosum; Hypoplastic corpus callosum; Underdevelopment of part of brain called corpus callosum","HPO_Name__c":"Hypoplasia of the corpus callosum","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Complete loss of the ability to move the lower limbs accompanied by spasticity of the lower limbs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001258","HPO_Synonym__c":"Spastic paraplegia, lower limb","HPO_Name__c":"Spastic paraplegia","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of decreased nerve conduction velocity that affects the motor neuron.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003431","HPO_Synonym__c":"Decreased motor NCV; Decreased motor nerve conduction velocities; Reduced motor nerve conduction velocity","HPO_Name__c":"Decreased motor nerve conduction velocity","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_NCV"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A state of respiratory distress that requires a life saving intervention in the form of gaining airway access and instituting positive pressure ventilation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004887","HPO_Synonym__c":"Respiratory distress necessitating mechanical ventilation; Respiratory distress requiring endotracheal intubation; Respiratory distress requiring mechanical ventilation","HPO_Name__c":"Respiratory failure requiring assisted ventilation","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000505","HPO_Synonym__c":"Impaired vision; Loss of eyesight; Poor vision; Visual impairment","HPO_Name__c":"Visual impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","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":"OMIM:619026","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An increase in the level of lactate in the brain identified by magnetic resonance spectroscopy (MRS).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012707","HPO_Name__c":"Elevated brain lactate level by MRS","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Imaging_MRI"}},{"Provided_By__c":"OMIM:619026","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A type of Developmental delay characterized by a delay in acquiring motor skills.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001270","HPO_Synonym__c":"Delay in development of motor milestones; Delay in motor development; Delayed development of motor milestones; Delayed early motor milestones; Delayed motor development; Delayed motor milestones; Locomotor delay; Motor developmental delay; Motor developmental milestones not achieved; Motor retardation; Retarded motor development; Slow development of motor milestones","HPO_Name__c":"Motor delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Neurodevelopmental disabilities","Pediatrics"]},"synonyms":["cerebral palsy, spastic quadriplegic, 1"," cerebral palsy, spastic quadriplegic, type 1"," infantile neurodegeneration-progressive spasticity-intellectual disability-white matter lesions syndrome"," nedswma"]}