{"Name":"Walker-Warburg congenital muscular dystrophy","DiseaseID__c":"GARD:0002599","id":2599,"encodedName":"walker-warburg-congenital-muscular-dystrophy","IsDeleted":false,"Disease_Name_Full__c":"Walker-Warburg congenital muscular dystrophy","Xref_IDs__c":"111504002; 423022525; C0265221; C99109; D058494; DOID:0050560; MEDGEN:75553; MONDO:0000171; OMIMPS:236670; ORPHA:899","USA_Estimate__c":"50,000","No_of_Specialist_Tagsa__c":8,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":2,"World_Estimate__c":"80,000 to 800,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":2,"No_of_Disease_Descriptions__c":3,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":3,"Description_Source__c":"GARD:0002599","Disease_Description__c":"Walker-Warburg syndrome (WWS) is a severe form of congenital muscular dystrophy associated with brain and eye abnormalities. Signs and symptoms are typically present at birth and include hypotonia, muscle weakness, developmental delay, intellectual disability and occasional seizures. It is also associated with lissencephaly, hydrocephalus, cerebellar malformations, eye abnormalities, and other abnormalities. It may be caused by genetic changes in any of several genes including the POMT1, POMT2 and FKRP genes, although in many individuals the genetic cause is unknown. WWS is inherited in an autosomal recessive manner.","GARD_Name__c":"Walker-Warburg congenital muscular dystrophy","GARD_Synonym__c":"cerebroocular dysplasia-muscular dystrophy syndrome; hard (hydrocephalus, agyria, retinal dysplasia) syndrome; hard syndrome; hydrocephalus-agyria-retinal dysplasia syndrome; hydrocephalus, agyria and retinal dysplasia; muscular dystrophy-dystroglycanopathy, type a; walker warburg syndrome; walker-warburg muscular dystrophy; walker-warburg syndrome; wws","Curated_Disease_Description_Source__c":"GARD:0002599","Curated_Disease_Description__c":"Walker-Warburg syndrome is an inherited disorder that affects development of the muscles, brain, and eyes. It is the most severe of a group of genetic conditions known as congenital muscular dystrophies, which cause muscle weakness and wasting (atrophy) beginning very early in life. The signs and symptoms of Walker-Warburg syndrome are present at birth or in early infancy. Because of the severity of the problems caused by Walker-Warburg syndrome, most affected individuals do not survive past childhood. Walker-Warburg syndrome affects the skeletal muscles, which are muscles the body uses for movement. Affected babies have weak muscle tone (hypotonia) and are sometimes described as 'floppy.' The muscle weakness worsens over time. Walker-Warburg syndrome also affects the brain; individuals with this condition typically have a brain abnormality called cobblestone lissencephaly, in which the surface of the brain lacks the normal folds and grooves and instead develops a bumpy, irregular appearance (like that of cobblestones). These individuals may also have a buildup of fluid in the brain (hydrocephalus) or abnormalities of certain parts of the brain, including a region called the cerebellum and the part of the brain that connects to the spinal cord (the brainstem). These changes in the structure of the brain lead to significantly delayed development and intellectual disability. Some individuals with Walker-Warburg syndrome experience seizures. Eye abnormalities are also characteristic of Walker-Warburg syndrome. These can include unusually small eyeballs (microphthalmia), enlarged eyeballs caused by increased pressure in the eyes (buphthalmos), clouding of the lenses of the eyes (cataracts), and problems with the nerve that relays visual information from the eyes to the brain (the optic nerve). These eye problems lead to vision impairment in affected individuals.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"50,000","Age_at_Onset_Snippet_Text__c":"during Pregnancy, at Birth, and as an Infant","SourceID__c":"ORPHA:899","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0000171","ORPHANET_ID__c":"ORPHA:899","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de walker-warburg","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"síndrome de walker-warburg","Spanish_GARD_Synonym__c":"hidrocefalia-agiria-displasia retiniana; síndrome de hidrocefalia-agiria-displasia retiniana; síndrome hard; wws","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":"Walker-Warburg syndrome is an inherited disorder that affects development of the muscles, brain, and eyes. It is the most severe of a group of genetic conditions known as congenital muscular dystrophies, which cause muscle weakness and wasting (atrophy) beginning very early in life. The signs and symptoms of Walker-Warburg syndrome are present at birth or in early infancy. Because of the severity of the problems caused by Walker-Warburg syndrome, most affected individuals do not survive past childhood. Walker-Warburg syndrome affects the skeletal muscles, which are muscles the body uses for movement. Affected babies have weak muscle tone (hypotonia) and are sometimes described as 'floppy.' The muscle weakness worsens over time. Walker-Warburg syndrome also affects the brain; individuals with this condition typically have a brain abnormality called cobblestone lissencephaly, in which the surface of the brain lacks the normal folds and grooves and instead develops a bumpy, irregular appearance (like that of cobblestones). These individuals may also have a buildup of fluid in the brain (hydrocephalus) or abnormalities of certain parts of the brain, including a region called the cerebellum and the part of the brain that connects to the spinal cord (the brainstem). These changes in the structure of the brain lead to significantly delayed development and intellectual disability. Some individuals with Walker-Warburg syndrome experience seizures. Eye abnormalities are also characteristic of Walker-Warburg syndrome. These can include unusually small eyeballs (microphthalmia), enlarged eyeballs caused by increased pressure in the eyes (buphthalmos), clouding of the lenses of the eyes (cataracts), and problems with the nerve that relays visual information from the eyes to the brain (the optic nerve). These eye problems lead to vision impairment in affected individuals.","Curated_Disease_Description_Source__c":"GARD:0002599","GARD_Synonym__c":"cerebroocular dysplasia-muscular dystrophy syndrome; hard (hydrocephalus, agyria, retinal dysplasia) syndrome; hard syndrome; hydrocephalus-agyria-retinal dysplasia syndrome; hydrocephalus, agyria and retinal dysplasia; muscular dystrophy-dystroglycanopathy, type a; walker warburg syndrome; walker-warburg muscular dystrophy; walker-warburg syndrome; wws","Name":"Walker-Warburg congenital muscular dystrophy","Curated_USA_Estimate__c":"50,000","estimateUsa":"50,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Muscular Dystrophy Family Foundation","Website__c":"https://mdff.org/"},{"Account_Name__c":"Cure CMD - Congenital Muscular Dystrophy","Website__c":"https://www.curecmd.org/"},{"Account_Name__c":"Muscular Dystrophy Association","Website__c":"https://www.mda.org"},{"Account_Name__c":"Muscular Dystrophy UK","Website__c":"https://www.musculardystrophyuk.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":"Ophthalmology","Tag_Category__c":"Specialist"},{"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":"Congenital Abnormality","Tag_Category__c":"Disease Category","category_description":"Birth defects are structural changes present at birth that can affect almost any part of the body, including how the body looks, works, or both.","curated_tag_name":"Birth defects"},{"Tag_Name__c":"Retinal","Tag_Category__c":"Account;Specialist","curated_tag_name":"Retinal disorders"},{"Tag_Name__c":"Epilepsy","Tag_Category__c":"Account;Specialist","curated_tag_name":"Epilepsy"},{"Tag_Name__c":"Muscular Dystrophy","Tag_Category__c":"Account;Disease Category","category_description":"Muscular dystrophy refers to a group of inherited disorders that cause muscles to gradually weaken and break down.","curated_tag_name":"Muscular dystrophy"},{"Tag_Name__c":"Neurodevelopmental disabilities","Tag_Category__c":"Specialist","curated_tag_name":"Neurodevelopmental disabilities"},{"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:899"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:899"},{"Age_At_Onset__c":"Antenatal","Provided_By__c":"ORPHA:899"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0002599","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=75553","Source__c":"C0265221","Xref__c":"MEDGEN:75553"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C058494","Source__c":"C0265221; MONDO:0000171","Xref__c":"D058494"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0050560","Source__c":"MONDO:0000171","Xref__c":"DOID:0050560"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C99109","Source__c":"C0265221; MONDO:0000171","Xref__c":"C99109"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=111504002","Source__c":"C0265221; MONDO:0000171","Xref__c":"111504002"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0265221","Source__c":"C0265221","Xref__c":"C0265221"},{"URL__c":"https://www.omim.org/phenotypicSeries/PS236670","Source__c":"MONDO:0000171","Xref__c":"OMIMPS:236670"},{"URL__c":"https://www.orpha.net/en/disease/detail/899","Source__c":"C0265221; MONDO:0000171; ORPHA:899","Xref__c":"ORPHA:899"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0000171","Source__c":"GARD:0002599","Xref__c":"MONDO:0000171"},{"URL__c":"https://medlineplus.gov/genetics/condition/walker-warburg-syndrome","Source__c":"GARD:0002599","Xref__c":"https://medlineplus.gov/genetics/condition/walker-warburg-syndrome"},{"URL__c":"https://secure.ssa.gov/apps10/poms.nsf/lnx/0423022525","Xref__c":"423022525"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"B3GALNT2","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"POMT1","GHR_URL__c":"https://medlineplus.gov/genetics/gene/pomt1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"POMK","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"B4GAT1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"LARGE1","GHR_URL__c":"https://medlineplus.gov/genetics/gene/large1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"POMGNT1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"DAG1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"RXYLT1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"POMGNT2","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"FKRP","GHR_URL__c":"https://medlineplus.gov/genetics/gene/fkrp","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"POMT2","GHR_URL__c":"https://medlineplus.gov/genetics/gene/pomt2","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"CRPPA","GHR_URL__c":"https://medlineplus.gov/genetics/gene/crppa","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"FKTN","GHR_URL__c":"https://medlineplus.gov/genetics/gene/fktn","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Polymicrogyria is a congenital malformation of the cerebral cortex characterized by abnormal cortical layering (lamination) and an excessive number of small gyri (folds).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002126","HPO_Synonym__c":"More grooves in brain","HPO_Name__c":"Polymicrogyria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Cerebellar hypoplasia is a descriptive term implying a cerebellum with a reduced volume, but a normal shape and is stable over time.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001321","HPO_Synonym__c":"Congenital cerebellar hypoplasia; Hypoplasia of cerebellum; Hypoplastic cerebellum; Small cerebellum; Underdeveloped cerebellum","HPO_Name__c":"Cerebellar hypoplasia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Occasional (5-29%)","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:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008736","HPO_Synonym__c":"Underdeveloped penis","HPO_Name__c":"Hypoplasia of penis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","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:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A coloboma of the iris.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000612","HPO_Synonym__c":"Cat eye; Coloboma of iris; Coloboma of the iris; Keyhole iris","HPO_Name__c":"Iris coloboma","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An anomaly of the vermis of cerebellum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002334","HPO_Synonym__c":"Abnormality of the cerebellar vermis","HPO_Name__c":"Abnormal cerebellar vermis morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Any deviation from the normal circulating creatine kinase concentration.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0040081","HPO_Synonym__c":"Abnormal circulating CK concentration; Abnormal circulating CPK concentration; Abnormal circulation phospho-CK concentration; Abnormal levels of creatine kinase in blood","HPO_Name__c":"Abnormal circulating creatine kinase concentration","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An increase in size of the ventricular system of the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002119","HPO_Synonym__c":"Cerebral ventricular dilatation; Dilated cerebral ventricle; Dilated cerebral ventricles; Dilated ventricles; Enlarged cerebral ventricles; Enlarged ventricles; Enlarged ventricular system; Large cerebral ventricles and cisternae; Ventricular dilatation","HPO_Name__c":"Ventriculomegaly","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","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":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hydrocephalus is an active distension of the ventricular system of the brain resulting from inadequate passage of CSF from its point of production within the cerebral ventricles to its point of absorption into the systemic circulation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000238","HPO_Synonym__c":"Hydrocephaly; Nonsyndromal hydrocephalus; Too much cerebrospinal fluid in the brain","HPO_Name__c":"Hydrocephalus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduced strength of muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001324","HPO_Synonym__c":"Muscle weakness; Muscular weakness","HPO_Name__c":"Muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","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:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Upper insertion of the ear to the scalp below an imaginary horizontal line drawn between the inner canthi of the eye and extending posteriorly to the ear.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000369","HPO_Synonym__c":"Low set ears; Low-set ears; Low-set pinnae; Lowset ears; Melotia","HPO_Name__c":"Low-set ears","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Testis in inguinal canal. That is, absence of one or both testes from the scrotum owing to failure of the testis or testes to descend through the inguinal canal to the scrotum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000028","HPO_Synonym__c":"Cryptorchism; Undescended testes; Undescended testis","HPO_Name__c":"Cryptorchidism","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Impairment of certain skills such as reading or writing, coordination, self-control, or attention that interfere with the ability to learn. The impairment is not related to a global deficiency of intelligence.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001328","HPO_Name__c":"Specific learning disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000175","HPO_Synonym__c":"Cleft hard and soft palate; Cleft of hard and soft palate; Cleft of palate; Cleft palate; Cleft roof of mouth; Palatoschisis; Uranostaphyloschisis","HPO_Name__c":"Cleft palate","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the gyri (i.e., the ridges) of the cerebral cortex of the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002536","HPO_Synonym__c":"Abnormal gyration; Cerebral gyral anomalies","HPO_Name__c":"Abnormal cortical gyration","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduction of neurologic reflexes such as the knee-jerk reaction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001265","HPO_Synonym__c":"Decreased reflex response; Decreased reflexes","HPO_Name__c":"Hyporeflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A congenital abnormality of the cornea in which the cornea and the anterior segment of the eye are smaller than normal. The horizontal diameter of the cornea does not reach 10 mm even in adulthood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000482","HPO_Synonym__c":"Cornea of eye less than 10mm in diameter; Decreased corneal diameter","HPO_Name__c":"Microcornea","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Absence of the septum pellucidum (meaning translucent wall in Latin - SP), also known as the ventricle of Sylvius. The septum pellucidum is a thin, triangular double membrane separating the frontal horns of the right and left lateral ventricles of the brain. It extends between the anterior portion of the corpus callosum, and the body of the fornix and its width varies from 1.5 to 3.0 mm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001331","HPO_Synonym__c":"Absence of septum pellucidum; Absence of the septum pellucidum; Agenesis of the septum pellucidum; Missing septum pellucidum","HPO_Name__c":"Absent septum pellucidum","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Glaucoma refers loss of retinal ganglion cells in a characteristic pattern of optic neuropathy usually associated with increased intraocular pressure.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000501","HPO_Name__c":"Glaucoma","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A developmental anomaly characterized by abnormal smallness of one or both eyes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000568","HPO_Synonym__c":"Abnormally small eyeball; Abnormally small globe of eye; Microphthalmos","HPO_Name__c":"Microphthalmia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The term dystrophy means abnormal growth. However, muscular dystrophy is used to describe primary myopathies with a genetic basis and a progressive course characterized by progressive skeletal muscle weakness and wasting, defects in muscle proteins, and histological features of muscle fiber degeneration (necrosis) and regeneration. If possible, it is preferred to use other HPO terms to describe the precise phenotypic abnormalities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003560","HPO_Name__c":"Muscular dystrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Uvula separated into two parts most easily seen at the tip.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000193","HPO_Synonym__c":"Bifid palatine uvula; Cleft of uvula; Cleft uvula; Forked uvula; Split uvula; Uvula bifida","HPO_Name__c":"Bifid uvula","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality resulting from an anomaly of neuronal migration, i.e., of the process by which neurons travel from their origin to their final position in the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002269","HPO_Synonym__c":"Abnormal neuronal migration; Heterotopias/abnormal migration; Migrational brain disorder; Neuronal migration disorder","HPO_Name__c":"Abnormality of neuronal migration","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of abnormal location of the ears in which the position of the ears is characterized by posterior rotation (the superior part of the ears is rotated towards the back of the head, and the inferior part of the ears towards the front).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000358","HPO_Synonym__c":"Ear, posterior angulation, increased; Ears rotated toward back of head; Posteriorly angulated ears; Posteriorly rotated; Posteriorly rotated auricles; Posteriorly-angulated ears; Posteriorly-rotated ears","HPO_Name__c":"Posteriorly rotated ears","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","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:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Angle formed by the plane of the ear and the mastoid bone greater than the 97th centile for age (objective); or, outer edge of the helix more than 2 cm from the mastoid at the point of maximum distance (objective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000411","HPO_Synonym__c":"Prominent ear; Prominent ears","HPO_Name__c":"Protruding ear","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormal development of the choroid and retina.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007731","HPO_Name__c":"Chorioretinal dysplasia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Absence of neurologic reflexes such as the knee-jerk reaction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001284","HPO_Synonym__c":"Absent deep tendon reflexes; Absent tendon reflexes; Deep tendon reflexes absent; Loss of deep tendon reflexes; Lost deep tendon reflexes","HPO_Name__c":"Areflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A deviation from the normal serum concentration/activity of lactate dehydrogenase (LDH), which catalyzes the reduction of pyruvate to form lactate.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0045040","HPO_Synonym__c":"Abnormal circulating LDH concentration; Abnormal lactate dehydrogenase level; Abnormal LDH level; AbnormalLDH level","HPO_Name__c":"Abnormal circulating lactate dehydrogenase concentration","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A congenital brain malformation typically characterized by incomplete formation of the cerebellar vermis, dilation of the fourth ventricle, and enlargement of the posterior fossa. In layman's terms, Dandy Walker malformation is a cyst in the cerebellum (typically symmetrical) that is involved with the fourth ventricle. This may interfere with the ability to drain cerebrospinal fluid from the brain, resulting in hydrocephalus. Dandy Walker cysts are formed during early embryonic development, while the brain forms. The cyst in the cerebellum typically has several blood vessels running through it connecting to the brain, thereby prohibiting surgical removal.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001305","HPO_Synonym__c":"Dandy-walker anomaly; Dandy-Walker cyst","HPO_Name__c":"Dandy-Walker malformation","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Separation of the inner layers of the retina (neural retina) from the pigment epithelium.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000541","HPO_Synonym__c":"Detached retina; Retinal detachment","HPO_Name__c":"Retinal detachment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormal growth and differentiation, structure and appearance of the retina present from birth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007973","HPO_Synonym__c":"Dysplasia/hypoplasia of the retina; Retinal dysgenesis","HPO_Name__c":"Retinal dysplasia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A cataract is an opacity or clouding that develops in the crystalline lens of the eye or in its capsule.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000518","HPO_Synonym__c":"Cataracts; Clouding of the lens of the eye; Cloudy lens; Lens opacities; Lens opacity","HPO_Name__c":"Cataract","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A condition in which the anterior part of the foot rotates outward away from the midline of the body and the heel remains straight.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010508","HPO_Name__c":"Metatarsus valgus","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Absence or underdevelopment of the musculature.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001460","HPO_Synonym__c":"Absent/small skeletal muscles; Absent/underdeveloped skeletal muscles","HPO_Name__c":"Aplasia/Hypoplasia involving the skeletal musculature","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Pachygyria is a malformation of cortical development with abnormally wide gyri with sulci 1,5-3 cm apart and abnormally thick cortex measuring more than 5 mm (radiological definition). See also neuropathological definitions for 2-, 3-, and 4-layered lissencephaly.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001302","HPO_Synonym__c":"Cerebral pachygyria; Fewer and broader ridges in brain; Macrogyria","HPO_Name__c":"Pachygyria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormality of the optic nerve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000587","HPO_Synonym__c":"Abnormality of the optic nerve; optic nerve abnormalities; Optic nerve issue","HPO_Name__c":"Abnormal optic nerve morphology","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Absence of the corpus callosum as a result of the failure of the corpus callosum to develop, which can be the result of a failure in any one of the multiple steps of callosal development including cellular proliferation and migration, axonal growth or glial patterning at the midline.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001274","HPO_Synonym__c":"Absence of corpus callosum; Absent corpus callosum; Agenesis of the corpus callosum; Callosal agenesis; Corpus callosum agenesis; Dysplastic or absent corpus callosum","HPO_Name__c":"Agenesis of corpus callosum","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A spectrum of malformations of cortical development caused by insufficient neuronal migration that subsumes the terms agyria, pachygyria and subcortical band heterotopia. See also neuropathological definitions for 2-, 3-, and 4-layered lissencephaly.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001339","HPO_Synonym__c":"Fewer or absent grooves in brain","HPO_Name__c":"Lissencephaly","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","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:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormal concentration of aldolase in the serum. Aldolase is an enzyme responsible for converting fructose 1,6-bisphosphate into the triose phosphates dihydroxyacetone phosphate and glyceraldehyde 3-phosphate.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012400","HPO_Synonym__c":"Abnormal aldolase level","HPO_Name__c":"Abnormal circulating aldolase concentration","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A reduction of corneal clarity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007957","HPO_Synonym__c":"Corneal clouding; Corneal opacities; Reduction of corneal clarity; Scarring or clouding of the cornea of the eye","HPO_Name__c":"Corneal opacity","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Hard-palate submucous clefts are characterized by bony defects in the midline of the bony palate that are covered by the mucous membrane of the roof of the mouth. It may be possible to detect a submucous cleft hard palate upon palpation as a notch in the bony palate.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000176","HPO_Synonym__c":"Partial thickness cleft hard palate","HPO_Name__c":"Submucous cleft hard palate","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001263","HPO_Synonym__c":"Delayed cognitive development; Delayed development; Delayed developmental milestones; Delayed intellectual development; Delayed milestones; Delayed psychomotor development; Developmental delay; Developmental delay in early childhood; Developmental delay, global; Developmental retardation; GDD; Lack of psychomotor development; Motor and developmental delay; Motormental retardation; Psychomotor delay; Psychomotor development deficiency; Psychomotor development failure; Psychomotor developmental delay; Retarded development; Retarded mental development; Retarded psychomotor development","HPO_Name__c":"Global developmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Absence of the globe or eyeball.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000528","HPO_Synonym__c":"Absence of eyeballs; Absence of globes of eyes; Anophthalmia, clinical; Clinical anophthalmia, unilateral/bilateral; Failure of development of eyeball; Missing eyeball; Missing globe of eye; No eyeball; No globe of eye; Ocular absence","HPO_Name__c":"Anophthalmia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:899","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Retinal dystrophy is an abnormality of the retina associated with a hereditary process. Retinal dystrophies are defined by their predominantly monogenic inheritance and they are frequently associated with loss or dysfunction of photoreceptor cells as a primary or secondary event.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000556","HPO_Synonym__c":"Breakdown of light-sensitive cells in back of eye","HPO_Name__c":"Retinal dystrophy","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics","Inborn Errors of Metabolism"],"Disease Category":["Genetics","Neurology","Inborn Errors of Metabolism","Congenital Abnormality","Muscular Dystrophy"],"Specialist":["Genetics","Neurology","Ophthalmology","Retinal","Epilepsy","Neurodevelopmental disabilities","Neuromuscular medicine","Pediatrics"],"Account":["Retinal","Epilepsy","Muscular Dystrophy"]},"synonyms":["cerebroocular dysplasia-muscular dystrophy syndrome"," hard (hydrocephalus, agyria, retinal dysplasia) syndrome"," hard syndrome"," hydrocephalus-agyria-retinal dysplasia syndrome"," hydrocephalus, agyria and retinal dysplasia"," muscular dystrophy-dystroglycanopathy, type a"," walker warburg syndrome"," walker-warburg muscular dystrophy"," walker-warburg syndrome"," wws"]}