{"Name":"GM1 gangliosidosis","DiseaseID__c":"GARD:0010891","id":10891,"encodedName":"gm1-gangliosidosis","IsDeleted":false,"Disease_Name_Full__c":"GM1 gangliosidosis","Xref_IDs__c":"124465002; 238025006; C0085131; C84739; D016537; DOID:3322; MEDGEN:43107; MONDO:0018149; ORPHA:354","USA_Estimate__c":"5,000","No_of_Specialist_Tagsa__c":6,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":1,"World_Estimate__c":"8,000 to 80,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":1,"No_of_Disease_Descriptions__c":5,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0018149","Disease_Description__c":"GM1 gangliosidosis is a rare lysosomal storage disorder characterized biochemically by deficient beta-galactosidase activity and clinically by a wide range of variable neurovisceral, ophthalmological and dysmorphic features.","GARD_Name__c":"GM1 gangliosidosis","GARD_Synonym__c":"beta-galactosidase deficiency; beta-galactosidase-1 deficiency; deficiency of beta-galactosidase; gangliosidosis gm1; glb1 deficiency; gm>1< gangliosidosis; landing disease; landing syndrome","Curated_Disease_Description_Source__c":"GARD:0010891","Curated_Disease_Description__c":"GM1 gangliosidosis is an inherited disorder that destroys nerve cells (neurons) in the brain and spinal cord. This condition can be classified as one of three major types based on the age at which signs and symptoms first appear. However, the signs and symptoms of these three types can overlap, leading some researchers to believe that GM1 gangliosidosis occurs on a spectrum instead of as three distinct types. The signs and symptoms of the most severe form of GM1 gangliosidosis, called type I or the infantile form, usually develop by the age of 6 months. Infants with this form of the disorder typically appear normal until their development slows and the muscles used for movement weaken. Affected infants eventually lose the skills they had previously acquired (developmentally regress) and may develop an exaggerated startle reaction to loud noises. Over time, children with GM1 gangliosidosis type I develop an enlarged liver and spleen (hepatosplenomegaly) and skeletal abnormalities. Affected children often  have seizures and profound intellectual disability.  People with GM1 gangliosidosis type I can lose their vision due to clouding of the clear outer covering of the eye (the cornea) and the breakdown of the light-sensing tissue at the back of the eye (the retina). Affected individuals also develop a red area in the eye known as a cherry-red spot. In some cases, affected individuals have distinctive facial features that are described as 'coarse,' enlarged gums (gingival hypertrophy), and an enlarged and weakened heart muscle (cardiomyopathy). Individuals with type I usually do not survive past early childhood. GM1 gangliosidosis type II occurs in one of two forms: the late infantile or the juvenile forms. Children with type II develop normally early in life, but they begin to show signs and symptoms of the condition around the age of 18 months (late infantile form) or 5 years (juvenile form). Individuals with GM1 gangliosidosis type II experience developmental regression but usually do not have cherry-red spots, coarse facial features, or enlarged organs. Type II usually progresses more slowly than type I, but it still  shortens life expectancy. People with the late infantile form typically survive into mid-childhood, while those with the juvenile form may live into early adulthood. GM1 gangliosidosis type III is the adult or chronic form of the condition, and this is the mildest form. The age at which symptoms first appear varies in people with GM1 gangliosidosis type III, although most affected individuals develop signs and symptoms in their teens. The characteristic features of this type include involuntary tensing of various muscles (dystonia) and abnormalities of the spinal bones (vertebrae). Life expectancy varies among people with GM1 gangliosidosis type III.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"5,000","Age_at_Onset_Snippet_Text__c":"as a Child","SourceID__c":"ORPHA:354","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0018149","ORPHANET_ID__c":"ORPHA:354","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Gangliosidosis gm1","Spanish_Description_Source__c":"ORPHA:354","Spanish_Description__c":"La gangliosidosis GM1 es un trastorno por almacenamiento lisosomal poco común caracterizado bioquímicamente por una actividad deficiente de la beta-galactosidasa y clínicamente por una amplia gama de rasgos neuroviscerales, oftalmológicos y dismórficos variables.","Spanish_Disease_Name__c":"gangliosidosis gm1","Spanish_GARD_Synonym__c":"deficiencia de beta-galactosidasa-1; deficiencia de glb1; enfermedad de landing","Category_Linearization__c":"ORPHA:68367","icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"GM1 gangliosidosis is an inherited disorder that destroys nerve cells (neurons) in the brain and spinal cord. This condition can be classified as one of three major types based on the age at which signs and symptoms first appear. However, the signs and symptoms of these three types can overlap, leading some researchers to believe that GM1 gangliosidosis occurs on a spectrum instead of as three distinct types. The signs and symptoms of the most severe form of GM1 gangliosidosis, called type I or the infantile form, usually develop by the age of 6 months. Infants with this form of the disorder typically appear normal until their development slows and the muscles used for movement weaken. Affected infants eventually lose the skills they had previously acquired (developmentally regress) and may develop an exaggerated startle reaction to loud noises. Over time, children with GM1 gangliosidosis type I develop an enlarged liver and spleen (hepatosplenomegaly) and skeletal abnormalities. Affected children often  have seizures and profound intellectual disability.  People with GM1 gangliosidosis type I can lose their vision due to clouding of the clear outer covering of the eye (the cornea) and the breakdown of the light-sensing tissue at the back of the eye (the retina). Affected individuals also develop a red area in the eye known as a cherry-red spot. In some cases, affected individuals have distinctive facial features that are described as 'coarse,' enlarged gums (gingival hypertrophy), and an enlarged and weakened heart muscle (cardiomyopathy). Individuals with type I usually do not survive past early childhood. GM1 gangliosidosis type II occurs in one of two forms: the late infantile or the juvenile forms. Children with type II develop normally early in life, but they begin to show signs and symptoms of the condition around the age of 18 months (late infantile form) or 5 years (juvenile form). Individuals with GM1 gangliosidosis type II experience developmental regression but usually do not have cherry-red spots, coarse facial features, or enlarged organs. Type II usually progresses more slowly than type I, but it still  shortens life expectancy. People with the late infantile form typically survive into mid-childhood, while those with the juvenile form may live into early adulthood. GM1 gangliosidosis type III is the adult or chronic form of the condition, and this is the mildest form. The age at which symptoms first appear varies in people with GM1 gangliosidosis type III, although most affected individuals develop signs and symptoms in their teens. The characteristic features of this type include involuntary tensing of various muscles (dystonia) and abnormalities of the spinal bones (vertebrae). Life expectancy varies among people with GM1 gangliosidosis type III.","Curated_Disease_Description_Source__c":"GARD:0010891","GARD_Synonym__c":"beta-galactosidase deficiency; beta-galactosidase-1 deficiency; deficiency of beta-galactosidase; gangliosidosis gm1; glb1 deficiency; gm>1< gangliosidosis; landing disease; landing syndrome","Name":"GM1 gangliosidosis","Curated_USA_Estimate__c":"5,000","estimateUsa":"5,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Society for Mucopolysaccharide Diseases","Website__c":"https://www.mpssociety.org.uk/"},{"Account_Name__c":"Childhood Dementia Initiative","Website__c":"https://www.childhooddementia.org/"},{"Account_Name__c":"National Tay-Sachs and Allied Diseases Association","Website__c":"https://www.ntsad.org/"},{"Account_Name__c":"Metabolic Support UK","Website__c":"https://www.metabolicsupportuk.org"},{"Account_Name__c":"Alex The Leukodystrophy Charity","Website__c":"https://www.alextlc.org"},{"Account_Name__c":"Cure GM1 Foundation","Website__c":"https://curegm1.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Genetics","Tag_Category__c":"Cause;Disease Category;Specialist","category_description":"Genetic diseases affect the DNA, or genetic instructions, which directs how tissues, organs, and body systems function.","curated_tag_name":"Genetic diseases"},{"Tag_Name__c":"Neurology","Tag_Category__c":"Disease Category;Specialist","category_description":"Neurological diseases affect the brain, spinal cord, cranial nerves, autonomic nerves, or other peripheral nerves.","curated_tag_name":"Neurological diseases"},{"Tag_Name__c":"Inborn Errors of Metabolism","Tag_Category__c":"Cause;Disease Category","category_description":"Inherited metabolic diseases, or inborn errors of metabolism, are a group of genetic diseases that affect the ability of the body's cells to convert food into energy.","curated_tag_name":"Inherited metabolic diseases"},{"Tag_Name__c":"Lysosomal","Tag_Category__c":"Account;Cause;Disease Category","category_description":"Lysosomal storage diseases are a group of genetic metabolic diseases that affect the ability of the body's cells to break down substances and remove toxins.","curated_tag_name":"Lysosomal storage diseases"},{"Tag_Name__c":"Orthopedics","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Epilepsy","Tag_Category__c":"Account;Specialist","curated_tag_name":"Epilepsy"},{"Tag_Name__c":"Neurodevelopmental disabilities","Tag_Category__c":"Specialist","curated_tag_name":"Neurodevelopmental disabilities"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Childhood","Provided_By__c":"ORPHA:354"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C0085131"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK164500","Source__c":"Gene Review","Xref__c":"NBK164500"},{"URL__c":"https://www.orpha.net/en/disease/detail/354","Source__c":"C0085131; MONDO:0018149; ORPHA:354","Xref__c":"ORPHA:354"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=238025006","Source__c":"C0085131; MONDO:0018149","Xref__c":"238025006"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=124465002","Source__c":"MONDO:0018149","Xref__c":"124465002"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C016537","Source__c":"C0085131; MONDO:0018149","Xref__c":"D016537"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A3322","Source__c":"MONDO:0018149","Xref__c":"DOID:3322"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0085131","Source__c":"C0085131","Xref__c":"C0085131"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C84739","Source__c":"C0085131; MONDO:0018149","Xref__c":"C84739"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=43107","Source__c":"C0085131","Xref__c":"MEDGEN:43107"},{"URL__c":"https://medlineplus.gov/genetics/condition/gm1-gangliosidosis","Source__c":"GARD:0010891","Xref__c":"https://medlineplus.gov/genetics/condition/gm1-gangliosidosis"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0018149","Source__c":"GARD:0010891","Xref__c":"MONDO:0018149"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"GLB1","GHR_URL__c":"https://medlineplus.gov/genetics/gene/glb1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The birth of a baby of less than 37 weeks of gestational age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001622","HPO_Synonym__c":"Premature birth; Premature delivery; Premature delivery of affected infants; Preterm birth; Preterm delivery; Shortened gestation time","HPO_Name__c":"Premature birth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002317","HPO_Synonym__c":"Gait instability; Unsteady walk","HPO_Name__c":"Unsteady gait","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000486","HPO_Synonym__c":"Cross-eyed; Squint; Squint eyes","HPO_Name__c":"Strabismus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Any structural anomaly of the heart.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001627","HPO_Synonym__c":"Abnormality of cardiac morphology; Abnormality of the heart; Abnormally shaped heart; Cardiac abnormality; Cardiac anomalies; Cardiac anomaly; Congenital heart defect; Congenital heart defects; Heart defect","HPO_Name__c":"Abnormal heart morphology","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Defects in the lysosomal glycosidases or specific co-activators, result in accumulation of the substrates, such as glycosphingolipids, including gangliosides in GM1 gangliosidosis (Tay-Sachs disease) and GM2 gangliosidosis (Sandhoff disease).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004345","HPO_Name__c":"Ganglioside accumulation","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Encephalomalacia is the softening or loss of brain tissue after cerebral infarction, cerebral ischemia, infection, craniocerebral trauma, or other injury.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0040197","HPO_Synonym__c":"Cerebral softening","HPO_Name__c":"Encephalomalacia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Impaired ability to eat related to problems gathering food and getting ready to suck, chew, or swallow it.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011968","HPO_Synonym__c":"Decreased oral intake; Feeding difficulties; Feeding problems; Poor feeding","HPO_Name__c":"Feeding difficulties","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormal increased size of the spleen.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001744","HPO_Synonym__c":"Increased spleen size; Large spleen","HPO_Name__c":"Splenomegaly","Feature_System__c":"Cardiovascular System; Immune System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000943","HPO_Name__c":"Dysostosis multiplex","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the skin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000951","HPO_Synonym__c":"Abnormality of the skin; Dermatopathy; Dermopathy","HPO_Name__c":"Abnormality of the skin","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A condition in which the stomach contents leak backwards from the stomach into the esophagus through the lower esophageal sphincter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002020","HPO_Synonym__c":"Acid reflux; Acid reflux disease; Gastro-esophageal reflux; Gastroesophageal reflux disease; GERD; GORD; Heartburn","HPO_Name__c":"Gastroesophageal reflux","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","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:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Blindness is the condition of lacking visual perception defined as a profound reduction in visual perception. On the 6m visual acuity scale, blindness is defined as less than 3/60. On the 20ft visual acuity scale, blindness is defined as less than 20/400. On the decimal visual acuity scale, blindness is defined as less than 0.05. Blindness is typically characterized by a visual field of no greater than 10 degrees in radius around central fixation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000618","HPO_Synonym__c":"Blindness; Total vision loss","HPO_Name__c":"Blindness","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality in the sound (volume) or cadence (rate) of speech.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002167","HPO_Synonym__c":"Abnormal speech; Abnormal vocalization; Abnormality of speech or vocalization","HPO_Name__c":"Abnormal speech pattern","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Joint pain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002829","HPO_Synonym__c":"Arthralgias; Joint pain","HPO_Name__c":"Arthralgia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of dystonia that affects all or most of the body.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007325","HPO_Name__c":"Generalized dystonia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Increased length and width of the tongue.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000158","HPO_Synonym__c":"Abnormally large tongue; Hyperplasia of the tongue; Hypertrophy of the tongue; Increased size of tongue; Large tongue; Tongue hypertrophy","HPO_Name__c":"Macroglossia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hyperplasia of the gingiva (that is, a thickening of the soft tissue overlying the alveolar ridge. The degree of thickening ranges from involvement of the interdental papillae alone to gingival overgrowth covering the entire tooth crown.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000212","HPO_Synonym__c":"Gingival enlargement; Gingival hyperplasia; Gum enlargement; Gum hypertrophy; Hypertrophic gingivitis","HPO_Name__c":"Gingival overgrowth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormally increased hair growth referring to a male pattern of body hair (androgenic hair).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001007","HPO_Synonym__c":"Excessive hairiness","HPO_Name__c":"Hirsutism","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"In utero, the ductus arteriosus (DA) serves to divert ventricular output away from the lungs and toward the placenta by connecting the main pulmonary artery to the descending aorta. A patent ductus arteriosus (PDA) in the first 3 days of life is a physiologic shunt in healthy term and preterm newborn infants, and normally is substantially closed within about 24 hours after bith and completely closed after about three weeks. Failure of physiologcal closure is referred to a persistent or patent ductus arteriosus (PDA). Depending on the degree of left-to-right shunting, PDA can have clinical consequences.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001643","HPO_Synonym__c":"Ductus arteriosus; Patent ductus Botalli; PDA; Persistent arterial duct; Persistent ductus arteriosus","HPO_Name__c":"Patent ductus arteriosus","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the skeletal system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000924","HPO_Synonym__c":"Abnormality of the skeletal system; Skeletal abnormalities; Skeletal anomalies","HPO_Name__c":"Abnormality of the skeletal system","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Absence of fine and sharp appearance of brows, nose, lips, mouth, and chin, usually because of rounded and heavy features or thickened skin with or without thickening of subcutaneous and bony tissues.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000280","HPO_Synonym__c":"Coarse face; Coarse facial appearance; Coarse facial features; Coarse facies","HPO_Name__c":"Coarse facial features","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A disorder of the brain caused by an infectious agent that presents with fever, headache, and an altered level of consciousness. There may also be focal or multifocal neurologic deficits, and focal or generalized seizure activity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002383","HPO_Synonym__c":"Brain inflammation","HPO_Name__c":"Infectious encephalitis","Feature_System__c":"Nervous System; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Simultaneous enlargement of the liver and spleen.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001433","HPO_Synonym__c":"Enlarged liver and spleen","HPO_Name__c":"Hepatosplenomegaly","Feature_System__c":"Cardiovascular System; Immune System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A flattened vertebral body shape with reduced distance between the vertebral endplates.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000926","HPO_Synonym__c":"Flat vertebral bodies; Flattened vertebrae; Flattened vertebral bodies","HPO_Name__c":"Platyspondyly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A structural abnormality of retinal vasculature.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008046","HPO_Synonym__c":"Abnormality of retina blood vessels; Abnormality of the retinal vasculature","HPO_Name__c":"Abnormal retinal vascular morphology","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Protrusion of the contents of the abdominal cavity through the inguinal canal.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000023","HPO_Name__c":"Inguinal hernia","Feature_System__c":"Musculoskeletal System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A neurological condition related to lesions of the basal ganglia leading to typical abnormalities including akinesia (inability to initiate changes in activity and perform volitional movements rapidly and easily), muscular rigidity (continuous contraction of muscles with constant resistance to passive movement), chorea (widespread arrhythmic movements of a forcible, rapid, jerky, and restless nature), athetosis (inability to sustain the muscles of the fingers, toes, or other group of muscles in a fixed position), and akathisia (inability to remain motionless).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002071","HPO_Synonym__c":"Extrapyramidal dysfunction; Extrapyramidal signs; Extrapyramidal symptoms; Extrapyramidal syndrome; Extrapyramidal tract signs","HPO_Name__c":"Abnormality of extrapyramidal motor function","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Laminar thickening of skin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001072","HPO_Synonym__c":"Pachydermia; Thick skin; Thickened skin","HPO_Name__c":"Thickened skin","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Pneumonia due to the aspiration (breathing in) of food, liquid, or gastric contents into the upper respiratory tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011951","HPO_Name__c":"Aspiration pneumonia","Feature_System__c":"Respiratory system; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the structure or form of the diaphysis, i.e., of the main or mid-section (shaft) of a long bone.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000940","HPO_Synonym__c":"Abnormal shape of shaft of long bone; Abnormality involving the diaphyses of the limbs; Abnormality of shaft of long bone of the limbs; Abnormality of the diaphyses; Anomaly of the limb diaphyses; Anomaly of the limb diaphyses morphology","HPO_Name__c":"Abnormal diaphysis morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","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":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally increased curvature (anterior concavity) of the lumbar or cervical spine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003307","HPO_Synonym__c":"Lordosis; Prominent swayback","HPO_Name__c":"Hyperlordosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Feeding problem necessitating gastrostomy tube feeding.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011471","HPO_Name__c":"Gastrostomy tube feeding in infancy","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Ataxia refers to impaired coordination of voluntary muscle movement. Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001251","HPO_Synonym__c":"Cerebellar ataxia","HPO_Name__c":"Ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","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:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Posterior positioning of the nasal root in relation to the overall facial profile for age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005280","HPO_Synonym__c":"Depressed bridge of nose; Depressed nasal bridge; Depressed nasal root; Flat bridge of nose; Flat nasal bridge; Flat nasal root; Flat, nasal bridge; Flattened nasal bridge; Low nasal bridge; Low nasal root; Retruded bridge of nose; Retruded nasal bridge","HPO_Name__c":"Depressed nasal bridge","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal morphology of vertebral body.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003312","HPO_Synonym__c":"Abnormal vertebral bodies; Abnormally shaped vertebrae","HPO_Name__c":"Abnormal form of the vertebral bodies","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal prominence of the chin related to increased length of the mandible.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000303","HPO_Synonym__c":"Big lower jaw; Big mandible; Enlarged mandible; Enlargement of mandible; Hyperplasia of lower jaw; Increased projection of lower jaw; Increased projection of mandible; Increased size of lower jaw; Large lower jaw; Large mandible; Lower jaw excess; Lower jaw hyperplasia; Macromandible; Mandible prognathism; Mandibular excess; Mandibular hyperplasia; Mandibular macrognathia; Mandibular prognathism; Prognathia; Prognathism; Prominent chin; Prominent jaw; Prominent lower jaw; Prominent mandible; Relative mandibular prognathism","HPO_Name__c":"Mandibular prognathia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally increased hair growth over much of the entire body.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002230","HPO_Synonym__c":"Excessive hairiness over body","HPO_Name__c":"Generalized hirsutism","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of congenital ventral incomplete closure of the abdominal wall in which the intestines and sometimes other organs extend freely into the amniotic fluid space through a small opening in the abdomen, usually to the right of the umbilicus.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001543","HPO_Name__c":"Gastroschisis","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormally decreased rate of beta-galactosidase activity. Beta-galactosidase activity can be measured in leukocyte, fibroblast, or plasma.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008166","HPO_Synonym__c":"Beta-galactosidase deficiency in fibroblasts and white blood cells; Beta-galactosidase-1 deficiency; Decreased beta galactosidase activity","HPO_Name__c":"Decreased beta-galactosidase activity","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A general term describing features characterized by abnormal development of bones and connective tissues.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002652","HPO_Name__c":"Skeletal dysplasia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Exaggerated anterior convexity of the thoracic vertebral column.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002808","HPO_Synonym__c":"Gibbus deformity; Hunched back; Hyperkyphosis; Round back","HPO_Name__c":"Kyphosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormally increased muscular tone that causes fixed abnormal postures. There is a slow, intermittent twisting motion that leads to exaggerated turning and posture of the extremities and trunk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001332","HPO_Synonym__c":"Dystonic movements","HPO_Name__c":"Dystonia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The abnormal accumulation of fluid in two or more fetal compartments, including ascites, pleural effusion, pericardial effusion, and skin edema.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001789","HPO_Name__c":"Hydrops fetalis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Pallor of the perifoveal macula of the retina with appearance of a small circular reddish choroid shape as seen through the fovea centralis due to relative transparency of the macula.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010729","HPO_Synonym__c":"Macular cherry red spot","HPO_Name__c":"Cherry red spot of the macula","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduction of total body weight.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001824","HPO_Synonym__c":"Loss of weight","HPO_Name__c":"Weight loss","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001508","HPO_Synonym__c":"Faltering weight; FTT; Postnatal failure to thrive; Weight faltering","HPO_Name__c":"Failure to thrive","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Joint stiffness is a perceived sensation of tightness in a joint or joints when attempting to move them after a period of inactivity. Joint stiffness typically subsides over time.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001387","HPO_Synonym__c":"Joint stiffness; Stiff joint; Stiff joints","HPO_Name__c":"Joint stiffness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Coarse appearance of the components of the network of osseous tissue that makes up the cancellous structure of a bone, i.e., thickening of the (usually fine) white lines that are produced by trabeculae in radiograms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100670","HPO_Synonym__c":"Coarse trabeculation at metaphyses; Rough bone trabeculation; Rough trabeculation of bone","HPO_Name__c":"Coarse metaphyseal trabecularization","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Distance between the commissures of the mouth more than 2 SD below the mean. Alternatively, an apparently decreased width of the oral aperture (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000160","HPO_Synonym__c":"Microstomia; Narrow mouth; Small mouth; Small oral aperture","HPO_Name__c":"Narrow mouth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Difficulty in swallowing.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002015","HPO_Synonym__c":"Difficulty swallowing; Poor swallowing; Swallowing difficulties; Swallowing difficulty","HPO_Name__c":"Dysphagia","Feature_System__c":"Nervous System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increase in width of the nasal tip.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000455","HPO_Synonym__c":"Broad nasal tip; Broad tip of nose; Broad, upturned nose; Increased breadth of nasal tip; Increased breadth of tip of nose; Increased width of nasal tip; Increased width of tip of nose; Nasal tip, broad; Nasal tip, wide; Wide tip of nose","HPO_Name__c":"Broad nasal tip","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of an abnormality of cardiac function that is responsible for the failure of the heart to pump blood at a rate that is commensurate with the needs of the tissues or a state in which abnormally elevated filling pressures are required for the heart to do so. Heart failure is frequently related to a defect in myocardial contraction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001635","HPO_Synonym__c":"Cardiac failure; Cardiac failures; Cardiac insufficiency; CHF; Chronic heart failure; Heart failure","HPO_Name__c":"Congestive heart failure","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","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:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Absence or underdevelopment of the abdominal musculature.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010318","HPO_Synonym__c":"Absent/small abdominal wall muscles; Absent/underdeveloped abdominal wall muscles","HPO_Name__c":"Aplasia/Hypoplasia of the abdominal wall musculature","Feature_System__c":"Musculoskeletal System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A structural abnormality of the central nervous system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002011","HPO_Synonym__c":"Abnormality of the central nervous system; Morphological abnormality of the central nervous system; Morphological abnormality of the CNS","HPO_Name__c":"Morphological central nervous system abnormality","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An anomaly of metabolism or structure of the brain identified by imaging.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0410263","HPO_Synonym__c":"Abnormal brain imaging","HPO_Name__c":"Brain imaging abnormality","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Generalized muscular hypotonia (abnormally low muscle tone).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001290","HPO_Synonym__c":"Generalized decreased muscle tone; Generalized muscular hypotonia; Hypotonia, generalized","HPO_Name__c":"Generalized hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A hole between the two bottom chambers (ventricles) of the heart. The defect is centered around the most superior aspect of the ventricular septum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001629","HPO_Synonym__c":"Hole in heart wall separating two lower heart chambers; Ventricular septal defects; Ventriculoseptal defect; VSD","HPO_Name__c":"Ventricular septal defect","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An anomaly of epiphysis, which is the expanded articular end of a long bone that developes from a secondary ossification center, and which during the period of growth is either entirely cartilaginous or is separated from the shaft by a cartilaginous disk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005930","HPO_Synonym__c":"Abnormal shape of end part of bone; Abnormality of epiphysis morphology; Abnormality of the epiphyses; Anomaly of the epiphyses; Epiphyseal abnormality","HPO_Name__c":"Abnormal epiphysis morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"A type of rigidity that is manifested by an exaggerated extensor posture of all extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025013","HPO_Synonym__c":"Decerebrate posturing","HPO_Name__c":"Decerebrate rigidity","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An increased susceptibility to respiratory infections as manifested by a history of recurrent respiratory infections.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002205","HPO_Synonym__c":"Frequent respiratory infections; Multiple respiratory infections; Recurrent respiratory infections; respiratory infections, recurrent; Susceptibility to respiratory infections","HPO_Name__c":"Recurrent respiratory infections","Feature_System__c":"Respiratory system; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any structural abnormality of the scrotum, i.e., the sac that contains the testes, epididymis, and the lower part of the spermatic cord.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000045","HPO_Synonym__c":"Abnormality of the scrotum","HPO_Name__c":"Abnormal scrotum morphology","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Lack of prominence of the nose resulting from a posteriorly-placed nasal ridge.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000457","HPO_Synonym__c":"Depressed dorsum of nose; Depressed nasal dorsum; Flat dorsum of nose; Flat nasal dorsum; Flat nose; Recessed dorsum of nose; Recessed nasal dorsum; Recessed nasal ridge; Retruded dorsum of nose; Retruded nasal dorsum; Retruded nasal ridge","HPO_Name__c":"Depressed nasal ridge","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","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:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Bilateral bulging of the lateral frontal bone prominences with relative sparing of the midline.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002007","HPO_Synonym__c":"Frontal protuberance; Skull bossing","HPO_Name__c":"Frontal bossing","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","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:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The distal interphalangeal joint and/or the proximal interphalangeal joint of the fingers cannot be extended to 180 degrees by either active or passive extension.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100490","HPO_Synonym__c":"Camptodactyly of hands; Camptodactyly of proximal interphalangeal joint; Contractures of the proximal interphalangeal joints of the fingers; Flexion contractures of proximal interphalangeal joints; Permanent flexion of the finger; Proximal interphalangeal finger joint contractures","HPO_Name__c":"Camptodactyly of finger","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Median longitudinal ear length greater than two standard deviations above the mean and median ear width greater than two standard deviations above the mean (objective); or, apparent increase in length and width of the pinna (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000400","HPO_Synonym__c":"Large ears; Large pinnae","HPO_Name__c":"Macrotia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reluctance or refusal of a child to be breastfed or eat, manifested as gagging, vomiting, turning head away from food, or avoidance of sensation in or around the mouth (i.e. toothbrushing or face-washing).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012523","HPO_Name__c":"Oral aversion","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A bilateral tonic-clonic seizure with generalized onset is a type of bilateral tonic-clonic seizure characterized by generalized onset; these seizures rapidly engage networks in both hemispheres at the start of the seizure.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025190","HPO_Synonym__c":"Generalised tonic-clonic seizure without focal onset; Generalised tonic-clonic seizure without partial onset; Generalised tonic-clonic seizures without focal onset; Generalised-onset tonic-clonic seizure; Generalized tonic-clonic seizure without focal onset; Generalized tonic-clonic seizure without partial onset; Generalized tonic-clonic seizures without focal onset; Generalized-onset tonic-clonic seizure; Primarily generalized tonic-clonic seizures; Primary generalized tonic-clonic seizure; Primary generalized tonic-clonic seizures","HPO_Name__c":"Bilateral tonic-clonic seizure with generalized onset","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An unintentional, oscillating to-and-fro muscle movement about a joint axis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001337","HPO_Synonym__c":"Tremor; Tremors","HPO_Name__c":"Tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An avascular or abnormally vascularized retina that occurs in premature infants and can lead to blindness.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0500049","HPO_Name__c":"Retinopathy of prematurity","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Limb shortening because of underdevelopment of one or more bones of the extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0009826","HPO_Synonym__c":"Hypoplasia involving bones of the extremities; limb shortening; Limb undergrowth; Short limb; Short limbs","HPO_Name__c":"Limb undergrowth","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of one or more metaphysis, i.e., of the somewhat wider portion of a long bone that is adjacent to the epiphyseal growth plate and grows during childhood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000944","HPO_Synonym__c":"Abnormality of the wide portion of a long bone","HPO_Name__c":"Abnormal metaphysis morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of movement with a neurological basis characterized by changes in coordination and speed of voluntary movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100022","HPO_Synonym__c":"Abnormality of movement; Movement disorder; Unusual movement","HPO_Name__c":"Abnormality of movement","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:354","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal cognition is characterized by deficits in thinking, reasoning, or remembering.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100543","HPO_Synonym__c":"Abnormality of cognition; Cognitive abnormality; Cognitive defects; Cognitive deficits; Cognitive impairment; Intellectual impairment","HPO_Name__c":"Cognitive impairment","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics","Inborn Errors of Metabolism","Lysosomal"],"Disease Category":["Genetics","Neurology","Inborn Errors of Metabolism","Lysosomal"],"Specialist":["Genetics","Neurology","Orthopedics","Epilepsy","Neurodevelopmental disabilities","Pediatrics"],"Account":["Lysosomal","Epilepsy"]},"synonyms":["beta-galactosidase deficiency"," beta-galactosidase-1 deficiency"," deficiency of beta-galactosidase"," gangliosidosis gm1"," glb1 deficiency"," gm>1< gangliosidosis"," landing disease"," landing syndrome"]}