{"Name":"Infantile hypotonia-oculomotor anomalies-hyperkinetic movements-developmental delay syndrome","DiseaseID__c":"GARD:0017962","id":17962,"encodedName":"infantile-hypotonia-oculomotor-anomalies-hyperkinetic-movements-developmental-delay-syndrome","IsDeleted":false,"Disease_Name_Full__c":"Infantile hypotonia-oculomotor anomalies-hyperkinetic movements-developmental delay syndrome","Xref_IDs__c":"C4748715; MEDGEN:1648431; MONDO:0033864; OMIM:618218; ORPHA:522077","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":6,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":"1 to 8,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":2,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":1,"Description_Source__c":"ORPHA:522077","Disease_Description__c":"A rare genetic neurological disorder characterized by infantile hypotonia, congenital ophthalmic anomalies (including strabismus, esotropia, nystagmus, and central visual impairment), global developmental delay and intellectual disability, behavioral abnormalities, and movement disorder (such as dystonia, chorea, hyperkinesia, stereotypies). Mild facial dysmorphism and skeletal deformities have also been reported. EEG testing shows marked abnormalities in the absence of overt epileptic seizures.","GARD_Name__c":"Infantile hypotonia-oculomotor anomalies-hyperkinetic movements-developmental delay syndrome","GARD_Synonym__c":"baker gordon syndrome; baker-gordon syndrome; infantile hypotonia, oculomotor anomalies, hyperkinetic movements, developmental delay syndrome; neurodevelopmental disorder with involuntary movement and abnormal electroencephalogram; synaptotagmin 1-related neurodevelopmental disorder; syt1-related neurodevelopmental disorder","Curated_Disease_Description_Source__c":"ORPHA:522077","Curated_Disease_Description__c":"A rare genetic neurological disorder characterized by infantile hypotonia, congenital ophthalmic anomalies (including strabismus, esotropia, nystagmus, and central visual impairment), global developmental delay and intellectual disability, behavioral abnormalities, and movement disorder (such as dystonia, chorea, hyperkinesia, stereotypies). Mild facial dysmorphism and skeletal deformities have also been reported. EEG testing shows marked abnormalities in the absence of overt epileptic seizures.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as an Infant","SourceID__c":"ORPHA:522077","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0033864","ORPHANET_ID__c":"ORPHA:522077","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de hipotonía infantil-anomalías oculomotoras-movimientos hipercinéticos-retraso del desarrollo","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"síndrome de hipotonía infantil-anomalías oculomotoras-movimientos hipercinéticos-retraso del desarrollo","Spanish_GARD_Synonym__c":"bagos; síndrome de baker-gordon; trastorno del neurodesarrollo asociado a syt1","Category_Linearization__c":"ORPHA:98006","icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"A rare genetic neurological disorder characterized by infantile hypotonia, congenital ophthalmic anomalies (including strabismus, esotropia, nystagmus, and central visual impairment), global developmental delay and intellectual disability, behavioral abnormalities, and movement disorder (such as dystonia, chorea, hyperkinesia, stereotypies). Mild facial dysmorphism and skeletal deformities have also been reported. EEG testing shows marked abnormalities in the absence of overt epileptic seizures.","Curated_Disease_Description_Source__c":"ORPHA:522077","GARD_Synonym__c":"baker gordon syndrome; baker-gordon syndrome; infantile hypotonia, oculomotor anomalies, hyperkinetic movements, developmental delay syndrome; neurodevelopmental disorder with involuntary movement and abnormal electroencephalogram; synaptotagmin 1-related neurodevelopmental disorder; syt1-related neurodevelopmental disorder","Name":"Infantile hypotonia-oculomotor anomalies-hyperkinetic movements-developmental de","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Baker-Gordon Syndrome Foundation","Website__c":"https://www.bagosfoundation.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":"Neuro-Ophthalmology","Tag_Category__c":"Specialist","curated_tag_name":"Neuro-ophthalmic diseases"},{"Tag_Name__c":"Neurodevelopmental disabilities","Tag_Category__c":"Specialist","curated_tag_name":"Neurodevelopmental disabilities"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:522077"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.orpha.net/en/disease/detail/522077","Source__c":"C4748715; MONDO:0033864; ORPHA:522077","Xref__c":"ORPHA:522077"},{"URL__c":"https://www.omim.org/entry/618218","Source__c":"C4748715; MONDO:0033864; ORPHA:522077","Xref__c":"OMIM:618218"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1648431","Source__c":"C4748715","Xref__c":"MEDGEN:1648431"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4748715","Source__c":"C4748715","Xref__c":"C4748715"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=1217371005","Source__c":"C4748715","Xref__c":"1217371005"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0033864","Source__c":"GARD:0017962","Xref__c":"MONDO:0033864"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"SYT1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of cerebral palsy characterized by slow, involuntary muscle movement and mixed muscle tone.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011445","HPO_Name__c":"Athetoid cerebral palsy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Focal spikes occurring for several seconds.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011194","HPO_Name__c":"EEG with series of focal spikes","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The capability that a joint (or a group of joints) has to move, passively and/or actively, beyond normal limits along physiological axes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001382","HPO_Synonym__c":"Double-Jointed; Extensible joints; Flexible joints; Hyperextensible joints; Increased joint mobility; Increased mobility of joints; Joint hyperextensibility; Joint hyperflexibility; Joint hyperlaxity; Joint laxity; Joints move beyond expected range of motion; Lax joints; Loose-jointedness","HPO_Name__c":"Joint hypermobility","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Frontal hairline with bilateral arcs to a low point in the midline of the forehead.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000349","HPO_Synonym__c":"Hairline peak; Hairline point; Pointed frontal hairline; Pointed hairline at front of head; V-shaped frontal hairline; Widow's peak","HPO_Name__c":"Widow's peak","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Floppiness/hypotonia is defined as reduced resistance to passive movement of joints. Physical examination of floppy/hypotonic infants shows head lag, lack of shoulder and elbow muscle contraction on traction response, inability to tighten the shoulder girdle muscles (or slipping through) when held under the axillae, scarf sign (when the arm is pulled to the opposite side, the arm wraps around the neck with the elbow crossing midline), hyperdorsiflexion of the feet, easy apposition of the thumb against the forearm, feet touching the cheek with ease and without discomfort, frog leg position, and inverted U sign on ventral suspension (head, arms, and legs hanging down without elbow or knee flexion and the trunk rounded in a dome shape).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008947","HPO_Synonym__c":"Decreased muscle tone in infant; Hypotonia early; Hypotonia in infancy; Hypotonia, early; Infantile hypotonia; Infantile muscular hypotonia","HPO_Name__c":"Floppy infant","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Complexes of spikes (<70 ms) and sharp waves (70-200 ms), which are sharp transient waves that have a strong association with epilepsy, in cerebral electrical activity recorded along the scalp by electroencephalography (EEG).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010850","HPO_Name__c":"EEG with spike-wave complexes","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A severe delay in the achievement of motor or mental milestones in the domains of development of a child.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011344","HPO_Synonym__c":"Global developmental delay, severe","HPO_Name__c":"Severe global developmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","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:522077","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":"ORPHA:522077","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormality observed by electroencephalogram (EEG), which is used to record of the brain's spontaneous electrical activity from multiple electrodes placed on the scalp.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002353","HPO_Synonym__c":"Abnormal EEG; Abnormal electroencephalogram; EEG abnormalities; Electroencephalogram abnormal; Electroencephalogram abnormalities","HPO_Name__c":"EEG abnormality","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Episodic hyperventilation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004879","HPO_Synonym__c":"Episodic hyperventilation; Intermittent overbreathing","HPO_Name__c":"Intermittent hyperventilation","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Intense feelings of nervousness, tension, or panic often arise in response to interpersonal stresses. There is worry about the negative effects of past unpleasant experiences and future negative possibilities. Individuals may feel fearful, apprehensive, or threatened by uncertainty, and they may also have fears of falling apart or losing control.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000739","HPO_Synonym__c":"Anxiety; Anxiousness; Excessive, persistent worry and fear","HPO_Name__c":"Anxiety","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Habitual biting of one's own body.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012169","HPO_Name__c":"Self-biting","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","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":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A reduced frequency or duration of eye contact.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000817","HPO_Synonym__c":"Poor eye contact","HPO_Name__c":"Reduced eye contact","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Motor hyperactivity with excessive movement of muscles of the body as a whole.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002487","HPO_Synonym__c":"Hyperactive movements; Hyperkinesia; Hyperkinesis","HPO_Name__c":"Hyperkinetic movements","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008762","HPO_Synonym__c":"Repetitive compulsive behavior","HPO_Name__c":"Repetitive compulsive behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","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:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002465","HPO_Synonym__c":"Poor speech","HPO_Name__c":"Poor speech","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal vertical height of the skull and a shortening of its anterior-posterior length, frequently combined with malformations of the occipital region.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000244","HPO_Synonym__c":"Brachy-turricephaly; High, prominent forehead; Turribrachycephaly","HPO_Name__c":"Brachyturricephaly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Hyperventilation refers to an increased pulmonary ventilation rate that is faster than necessary for the exchange of gases. Hyperventilation can result from increased frequency of breathing, an increased tidal volume, or both, and leads to an excess intake of oxygen and the blowing off of carbon dioxide.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002883","HPO_Synonym__c":"Rapid breathing","HPO_Name__c":"Hyperventilation","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Involuntary movements characterized by both athetosis (inability to sustain muscles in a fixed position) and chorea (widespread jerky arrhythmic movements).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001266","HPO_Synonym__c":"Choreoathetoid movements","HPO_Name__c":"Choreoathetosis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A state of excessive motor activity that is associated with mental distress or a feeling of substantial unease or inner tension. Distinguished from restlessness by the increased level of emotional distress and negative intensity of the experience. Agitation has a significant level of physical activity that is typically threatening to the self or others.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000713","HPO_Synonym__c":"Psychomotor agitation","HPO_Name__c":"Agitation","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Distance from nasion to subnasale more than two standard deviations below the mean, or alternatively, an apparently decreased length from the nasal root to the nasal tip.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003196","HPO_Synonym__c":"Decreased length of nose; Hypoplastic nose; Nasal hypoplasia; Short nose; Shortened nose","HPO_Name__c":"Short nose","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","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:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A shape created by an acute downward arching of the upper eyelid and upward arching of the lower eyelid, toward the medial canthus, which gives the outline of the palpebral fissures the configuration of an almond. Thus, the maximum distance between the fissures is offset from, and medial to, the center point.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007874","HPO_Synonym__c":"Almond shaped eyes; Almond-shaped opening between the eyelids","HPO_Name__c":"Almond-shaped palpebral fissure","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An eyebrow that extends straight across the brow, without curve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011228","HPO_Synonym__c":"Flat eyebrow; Horizontal eyebrow; Straight eyebrow","HPO_Name__c":"Horizontal eyebrow","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","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":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Anomalous anatomical placement of the eyebrow.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0040296","HPO_Synonym__c":"Abnormal location of eyebrows; Abnormally placed eyebrows","HPO_Name__c":"Abnormal location of the eyebrow","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Hemiballismus is a rare movement disorder that is caused primarily by damage to various areas in the basal ganglia. Hemiballismus is usually characterized by involuntary flinging motions of the extremities. The movements are often violent and have wide amplitudes of motion. They are continuous and random and can involve proximal and/or distal muscles on one side of the body, while some cases even include the facial muscles. The more a patient is active, the more the movements increase. With relaxation comes a decrease in movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100248","HPO_Name__c":"Hemiballismus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Syndactyly with fusion of toes two and three.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004691","HPO_Synonym__c":"2-3 syndactyly of feet; 2-3 toe soft tissue syndactyly; 2-3 toes syndactyly; partial or complete syndactyly 2nd-3rd toes; Syndactyly of second and third toes; Toe syndactyly, 2-3; Webbed 2nd and 3rd toes","HPO_Name__c":"2-3 toe syndactyly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005274","HPO_Synonym__c":"Large nasal tip; Large tip of nose; Prominent nasal tip; Prominent tip of nose; Pronounced nasal tip; Pronounced tip of nose","HPO_Name__c":"Prominent nasal tip","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal accentuation of the inward curvature of the spine in the lumbar region.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002938","HPO_Synonym__c":"Exaggerated lumbar lordosis; Excessive inward curvature of lower spine; Increased lumbar lordosis; Lumbar lordosis; Prominent lumbar lordosis","HPO_Name__c":"Lumbar hyperlordosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Apnea resulting from depression of the respiratory centers in the medulla oblongata. There is a lack of respiratory effort rather than obstruction of airflow.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002871","HPO_Synonym__c":"Central apnoea","HPO_Name__c":"Central apnea","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Delayed myelination.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012448","HPO_Name__c":"Delayed myelination","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","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":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Forceful ejection of the contents of the stomach through the mouth by means of a series of involuntary spasmic contractions.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002013","HPO_Synonym__c":"Emesis; Throwing up; Vomiting","HPO_Name__c":"Vomiting","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of refraction characterized by the ability to see objects in the distance clearly, while objects nearby appear blurry.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000540","HPO_Synonym__c":"Farsightedness; Hyperopia; Long-sightedness","HPO_Name__c":"Hypermetropia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Persistent deficits in social interaction and communication and interaction as well as a markedly restricted repertoire of activity and interest as well as repetitive patterns of behavior.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000729","HPO_Synonym__c":"ASD; Pervasive developmental disorder","HPO_Name__c":"Autistic behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Very frequent (80-99%)","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":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Lack of visual responsiveness or decrease in visual capabilities suggesting a lack of visual responsiveness or decrease in visual capabilities in an infant or young child in which visual behavior fails to meet normal developmental milestones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025152","HPO_Synonym__c":"Abnormal visual behavior for age; Poor visual behavior for age","HPO_Name__c":"Poor visual behavior for age","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Laryngomalacia is a congenital abnormality of the laryngeal cartilage in which the cartilage is floppy and prolapses over the larynx during inspiration.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001601","HPO_Synonym__c":"Softening of voice box tissue","HPO_Name__c":"Laryngomalacia","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Deliberate harm to one's body resulting in tissue damage, without a conscious intent to die.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000742","HPO_Synonym__c":"Deliberate self-harm; Self mutilation; Self-mutilation","HPO_Name__c":"Self-mutilation","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A form of strabismus with one or both eyes turned inward ('crossed') to a relatively severe degree, usually defined as 10 diopters or more.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000565","HPO_Synonym__c":"Inward turning cross eyed","HPO_Name__c":"Esotropia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An outward deviation of the foot at the talocalcaneal or subtalar joint.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008081","HPO_Synonym__c":"Valgus foot deformity","HPO_Name__c":"Pes valgus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Bilateral clubfoot deformity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001776","HPO_Synonym__c":"Bilateral clubfeet; Bilateral clubfoot; Club foot on both sides","HPO_Name__c":"Bilateral talipes equinovarus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","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:522077","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:522077","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A type of Developmental delay characterized by a delay in acquiring motor skills.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001270","HPO_Synonym__c":"Delay in development of motor milestones; Delay in motor development; Delayed development of motor milestones; Delayed early motor milestones; Delayed motor development; Delayed motor milestones; Locomotor delay; Motor developmental delay; Motor developmental milestones not achieved; Motor retardation; Retarded motor development; Slow development of motor milestones","HPO_Name__c":"Motor delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An intermittent cessation of airflow at the mouth and nose during sleep is known as sleep apnea. Apneas that last at least 10 seconds are considered significant, but individuals with sleep apnea may experience apneas lasting from 20 seconds up to 2 or 3 minutes. Patients may have up to 15 events per hour of sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010535","HPO_Synonym__c":"Pauses in breathing while sleeping; Sleep apnea; Sleep apnoea","HPO_Name__c":"Sleep apnea","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal pattern in the quality, quantity, or characteristics of sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002360","HPO_Synonym__c":"Difficulty sleeping; Sleep abnormality; Sleep disturbances; Sleep dysfunction; Sleep-wake disturbance; Trouble sleeping","HPO_Name__c":"Sleep disturbance","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","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:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Atrial septal defect (ASD) is a congenital abnormality of the interatrial septum that enables blood flow between the left and right atria via the interatrial septum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001631","HPO_Synonym__c":"An opening in the wall separating the top two chambers of the heart; ASD; Atria septal defect; Atrial septum defect; Atrioseptal defect; Defect in the atrial septum; Hole in heart wall separating two upper heart chambers","HPO_Name__c":"Atrial septal defect","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Progressively worsening joint contractures.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005876","HPO_Synonym__c":"Joint contractures, progressive","HPO_Name__c":"Progressive flexion contractures","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A congenital subcutaneous cyst that arises from entrapment of skin along the lines of embryonic fusion. In contrast to epidermal cysts, dermoid cysts tend to contain various adnexal structures such as hair, sebaceous, eccrine or apocrine glands. Dermoid cysts are present at birth, and are indolent, firm, deep, subcutaneous nodules. They are often located on the head and neck, and rarely in the anogenital area. Dermoid cysts are slowly progressive and can grow to a size of 1 to 4 cm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025247","HPO_Name__c":"Dermoid cyst","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal plantar flexion of the calcaneus relative to the longitudinal axis of the tibia. This results in the angle between the long axis of the tibia and the long axis of the heel bone (calcaneus) being greater than 90 degrees.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008138","HPO_Synonym__c":"Equinus deformity of the calcaneus; Hindfoot equinus","HPO_Name__c":"Equinus calcaneus","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:522077","HPO_Frequency__c":"Occasional (5-29%)","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:522077","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":"ORPHA:522077","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:522077","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"EEG with focal sharp transient waves of a duration between 80 and 200 msec.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011196","HPO_Name__c":"EEG with focal sharp waves","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Ophthalmology","Neuro-Ophthalmology","Neurodevelopmental disabilities","Pediatrics"]},"synonyms":["baker gordon syndrome"," baker-gordon syndrome"," infantile hypotonia, oculomotor anomalies, hyperkinetic movements, developmental delay syndrome"," neurodevelopmental disorder with involuntary movement and abnormal electroencephalogram"," synaptotagmin 1-related neurodevelopmental disorder"," syt1-related neurodevelopmental disorder"]}