{"Name":"Developmental and epileptic encephalopathy, 64","DiseaseID__c":"GARD:0013681","id":13681,"encodedName":"developmental-and-epileptic-encephalopathy-64","IsDeleted":false,"Disease_Name_Full__c":"Developmental and epileptic encephalopathy, 64","Xref_IDs__c":"C4693899; DOID:0070375; MEDGEN:1633501; MONDO:0033373; OMIM:618004","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":2,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":null,"No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":1,"Disease_Characteristics_Score__c":5,"No_of_Age_at_Onset__c":0,"Description_Source__c":null,"Disease_Description__c":null,"GARD_Name__c":"Developmental and epileptic encephalopathy, 64","GARD_Synonym__c":"dee64; developmental and epileptic encephalopathy 64; eiee64; epileptic encephalopathy, early infantile, 64; rhobtb2 syndrome; rhobtb2-associated neurodevelopmental disorders","Curated_Disease_Description_Source__c":null,"Curated_Disease_Description__c":"This rare brain and seizure disease affects early development, thinking, movement, and language. This disorder usually begins in the first year of life with seizures, and is associated with intellectual disability, poor motor development, and little or no speech. Many affected individuals have low muscle tone, abnormal movements, and facial differences. The severity can vary: Some people are not able to speak, walk, or interact with others even in their teenage years, while others have some ability to understand basic communication. This disease is one of many related diseases grouped as developmental and epileptic encephalopathies, which share features of seizures along with significant effects on development.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":null,"SourceID__c":null,"Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0033373","ORPHANET_ID__c":null,"Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":null,"Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":null,"Spanish_GARD_Synonym__c":null,"Category_Linearization__c":null,"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":"This rare brain and seizure disease affects early development, thinking, movement, and language. This disorder usually begins in the first year of life with seizures, and is associated with intellectual disability, poor motor development, and little or no speech. Many affected individuals have low muscle tone, abnormal movements, and facial differences. The severity can vary: Some people are not able to speak, walk, or interact with others even in their teenage years, while others have some ability to understand basic communication. This disease is one of many related diseases grouped as developmental and epileptic encephalopathies, which share features of seizures along with significant effects on development.","GARD_Synonym__c":"dee64; developmental and epileptic encephalopathy 64; eiee64; epileptic encephalopathy, early infantile, 64; rhobtb2 syndrome; rhobtb2-associated neurodevelopmental disorders","Name":"Developmental and epileptic encephalopathy, 64","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Aaron's Ohtahara","Website__c":"https://sites.google.com/a/ohtahara.org/ohtahara2/"}],"GARD_Disease_Tag__c":[{"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"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.omim.org/entry/618004","Source__c":"C4693899; MONDO:0033373","Xref__c":"OMIM:618004"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1633501","Source__c":"C4693899","Xref__c":"MEDGEN:1633501"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0070375","Source__c":"MONDO:0033373","Xref__c":"DOID:0070375"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4693899","Source__c":"C4693899","Xref__c":"C4693899"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0033373","Source__c":"GARD:0013681","Xref__c":"MONDO:0033373"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"RHOBTB2","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased thickness of the lower lip, leading to a prominent appearance of the lower lip. The height of the vermilion of the lower lip in the midline is more than 2 SD above the mean. Alternatively, an apparently increased height of the vermilion of the lower lip in the frontal view (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000179","HPO_Synonym__c":"Full lower lip vermilion; Increased height of lower lip vermilion; Increased volume of lower lip; Increased volume of lower lip vermilion; Plump lower lip; Prominent lower lip; Thick vermilion border of lower lip","HPO_Name__c":"Thick lower lip vermilion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Underdevelopment of the corpus callosum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002079","HPO_Synonym__c":"Corpus callosum hypoplasia; Hypoplasia of corpus callosum; Hypoplastic corpus callosum; Underdevelopment of part of brain called corpus callosum","HPO_Name__c":"Hypoplasia of the corpus callosum","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001250","HPO_Synonym__c":"Epileptic seizure; Seizures","HPO_Name__c":"Seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Flat skin surface, with no ridge formation in the central region of the upper lip between the nasal base and upper vermilion border.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000319","HPO_Synonym__c":"Decreased depth of philtrum; Flat philtrum; Indistinct philtrum; Philtrum, smooth; Shallow philtrum; Simple philtrum","HPO_Name__c":"Smooth philtrum","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","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":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of skull shape characterized by a increased anterior-posterior diameter, i.e., an increased antero-posterior dimension of the skull. Cephalic index less than 76%. Alternatively, an apparently increased antero-posterior length of the head compared to width. Often due to premature closure of the sagittal suture.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000268","HPO_Synonym__c":"Long, narrow head; Tall and narrow skull","HPO_Name__c":"Dolichocephaly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Insertion of the posterior columella below the nasal base.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010763","HPO_Synonym__c":"Columella, low insertion","HPO_Name__c":"Low insertion of columella","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Anteriorly-facing nostrils viewed with the head in the Frankfurt horizontal and the eyes of the observer level with the eyes of the subject. This gives the appearance of an upturned nose (upturned nasal tip).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000463","HPO_Synonym__c":"Anteverted nose; Anteverted nostrils; Nasal tip, upturned; Nostrils anteverted; Upturned nares; Upturned nasal tip; Upturned nose; Upturned nostrils","HPO_Name__c":"Anteverted nares","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002509","HPO_Synonym__c":"Appendicular hypertonia; Increased muscle tone of arm or leg","HPO_Name__c":"Limb hypertonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased height of the central portion of the eyebrow, forming a crescent, semicircular, or inverted U shape.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002553","HPO_Synonym__c":"Arched eyebrows; Broad, arched eyebrows; High, rounded eyebrows; High-arched eyebrows; Highly arched eyebrow; Thick, flared eyebrows","HPO_Name__c":"Highly arched eyebrow","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","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":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Incapability to ambulate.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002540","HPO_Synonym__c":"Inability to walk; Non-ambulatory","HPO_Name__c":"Inability to walk","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Distance between the hairline (trichion) and the glabella (the most prominent point on the frontal bone above the root of the nose), in the midline, more than two SD below the mean. Alternatively, an apparently decreased distance between the hairline and the glabella.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000294","HPO_Synonym__c":"Low frontal hairline; Low-set frontal hairline","HPO_Name__c":"Low anterior hairline","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The term intellectual disability or intellectual developmental disorder is used to describe significantly sub-average intellectual and adaptive functioning based on clinical assessment and as measured by individually administered, appropriately normed, standardized and validated tests of intellectual functioning and adaptive behavior, with onset during the developmental period from infancy through adolescence.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001249","HPO_Synonym__c":"Intellectual disability; Mental deficiency; Mental retardation; Mental retardation, nonspecific; Mental-retardation; Nonprogressive intellectual disability; Nonprogressive mental retardation","HPO_Name__c":"Intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Chorea (Greek for 'dance') refers to widespread arrhythmic involuntary movements of a forcible, jerky and restless fashion. It is a random-appearing sequence of one or more discrete involuntary movements or movement fragments. Movements appear random because of variability in timing, duration or location. Each movement may have a distinct start and end. However, movements may be strung together and thus may appear to flow randomly from one muscle group to another. Chorea can involve the trunk, neck, face, tongue, and extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002072","HPO_Synonym__c":"Choreic movements; Choreiform movements","HPO_Name__c":"Chorea","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A fold of skin starting above the medial aspect of the upper eyelid and arching downward to cover, pass in front of and lateral to the medial canthus.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000286","HPO_Synonym__c":"Epicanthal fold; Epicanthal folds; Epicanthic folds; Eye folds; Palpebronasal fold; Plica palpebronasalis; Prominent eye folds","HPO_Name__c":"Epicanthus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Distance between nasal base and midline upper lip vermilion border more than 2 SD above the mean. Alternatively, an apparently increased distance between nasal base and midline upper lip vermilion border.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000343","HPO_Synonym__c":"Elongated philtrum; Increased height of philtrum; Increased length of philtrum; Increased vertical dimension of philtrum; Vertical hyperplasia of philtrum","HPO_Name__c":"Long philtrum","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Loss of developmental skills, as manifested by loss of developmental milestones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002376","HPO_Synonym__c":"Loss of acquired milestones; Loss of developmental milestones; Loss of milestones; Mental deterioration in childhood; Neurodevelopmental regression; Psychomotor regression; Psychomotor regression beginning in infancy; Psychomotor regression in infants; Psychomotor regression, progressive","HPO_Name__c":"Developmental regression","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","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":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Status epilepticus is a type of prolonged seizure resulting either from the failure of the mechanisms responsible for seizure termination or from the initiation of mechanisms which lead to abnormally prolonged seizures (after time point t1). It is a condition that can have long-term consequences (after time point t2), including neuronal death, neuronal injury, and alteration of neuronal networks, depending on the type and duration of seizures.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002133","HPO_Synonym__c":"Prolonged seizure; Repeated seizure without recovery; Repeated seizures without recovery between them","HPO_Name__c":"Status epilepticus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Self-aggression.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100716","HPO_Synonym__c":"Autoagression; Self injury; Self-harm; Self-injurious behavior; Self-injurious behaviors","HPO_Name__c":"Self-injurious behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","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":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Loss of strength in the arm, leg, and sometimes face on one side of the body. Hemiplegia refers to a complete loss of strength, whereas hemiparesis refers to an incomplete loss of strength.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001269","HPO_Synonym__c":"Weakness of one side of body","HPO_Name__c":"Hemiparesis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Developmental hypoplasia of the mandible.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000347","HPO_Synonym__c":"Decreased size of lower jaw; Decreased size of mandible; Hypoplasia of lower jaw; Hypoplasia of mandible; Hypoplastic mandible; Hypoplastic mandible condyle; Hypotrophic lower jaw; Hypotrophic mandible; Little lower jaw; Little mandible; Lower jaw deficiency; Lower jaw hypoplasia; Mandibular deficiency; Mandibular hypoplasia; Mandibular micrognathia; Micrognathia of lower jaw; Micromandible; Robin mandible; Severe hypoplasia of mandible; Small jaw; Small lower jaw; Small mandible; Underdevelopment of lower jaw; Underdevelopment of mandible","HPO_Name__c":"Micrognathia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased spaces (diastemata) between most of the teeth in the same dental arch.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000687","HPO_Synonym__c":"Generalized dental spacing; Generalized spacing of teeth; Multiple diastemata; Wide-spaced teeth; Widely spaced teeth; Widely-spaced teeth","HPO_Name__c":"Widely spaced teeth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Bruxism is characterized by the grinding of the teeth including the clenching of the jaw and typically occur during sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003763","HPO_Synonym__c":"Teeth grinding","HPO_Name__c":"Bruxism","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Decreased density/number of eyebrow hairs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0045075","HPO_Synonym__c":"Hypotrichosis of eyebrow; Sparse eyebrow; Sparse eyebrows","HPO_Name__c":"Sparse eyebrow","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","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":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased density/number and/or increased diameter of eyebrow hairs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000574","HPO_Synonym__c":"Bushy eyebrows; Dense eyebrow; Heavy eyebrows; Hypertrichosis of the eyebrow; Prominent eyebrows; Thick eyebrow; Thick eyebrows","HPO_Name__c":"Thick eyebrow","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A form of dystonia characterized by episodes of dystonia (often hemidystonia or generalized) lasting from minutes to hours. There are no dystonic symptoms between episodes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002268","HPO_Synonym__c":"Episodic dystonia","HPO_Name__c":"Paroxysmal dystonia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Complete lack of development of speech and language abilities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001344","HPO_Synonym__c":"Absent speech development; Lack of language development; Lack of speech; No speech development; No speech or language development; Nonverbal","HPO_Name__c":"Absent speech","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","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":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An eye that is more deeply recessed into the plane of the face than is typical.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000490","HPO_Synonym__c":"Deep set eye; Deep-set eyes; Deeply set eye; Enophthalmos; Ocular depression; Sunken eye; Sunken eyes","HPO_Name__c":"Deeply set eye","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","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":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Mid upper eyelash length >10 mm or increased length of the eyelashes (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000527","HPO_Synonym__c":"Ciliary trichomegaly; Eyelash trichomegaly; Increased length of eyelashes; Long eyelashes; Unusually long eyelashes","HPO_Name__c":"Long eyelashes","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Use of the same abnormal action in response to certain triggers or at random. They may be used as a way to regulate one's internal state but must otherwise have no apparent functional purpose.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000733","HPO_Synonym__c":"Abnormal repetitive mannerism; Repetitive behavior; Repetitive movements; Repetitive, stereotypic behavior; Stereotyped; Stereotyped behavior; Stereotyped behaviors; Stereotypical motor behavior; Stereotypical motor behaviors; Stimming","HPO_Name__c":"Motor stereotypy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Head circumference below 2 standard deviations below the mean for age and sex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000252","HPO_Synonym__c":"Abnormally small cranium; Abnormally small skull; Decreased circumference of cranium; Decreased size of cranium; Decreased size of skull; Reduced head circumference; small cranium; Small head circumference","HPO_Name__c":"Microcephaly","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Atrophy of the cortex of the cerebrum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002120","HPO_Synonym__c":"Cerebral cortex atrophy; Cortical atrophy; Decrease in size of the outer layer of the brain due to loss of brain cells","HPO_Name__c":"Cerebral cortical atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Height of the vermilion of the upper lip in the midline more than 2 SD below the mean. Alternatively, an apparently reduced height of the vermilion of the upper lip in the frontal view (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000219","HPO_Synonym__c":"Decreased height of upper lip vermilion; Decreased volume of upper lip; Decreased volume of upper lip vermilion; Thin upper lip; Thin vermilion border of upper lip","HPO_Name__c":"Thin upper lip vermilion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Delayed myelination in the central nervous system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002188","HPO_Synonym__c":"Delay in central nervous system myelination","HPO_Name__c":"Delayed CNS myelination","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:618004","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"}}],"tags":{"Account":["Epilepsy"],"Specialist":["Epilepsy","Neurodevelopmental disabilities"]},"synonyms":["dee64"," developmental and epileptic encephalopathy 64"," eiee64"," epileptic encephalopathy, early infantile, 64"," rhobtb2 syndrome"," rhobtb2-associated neurodevelopmental disorders"]}