{"Name":"20q13.33 microdeletion syndrome","DiseaseID__c":"GARD:0020778","id":20778,"encodedName":"20q1333-microdeletion-syndrome","IsDeleted":false,"Disease_Name_Full__c":"20q13.33 microdeletion syndrome","Xref_IDs__c":"733520002; C4518823; MEDGEN:1384661; MONDO:0016843; ORPHA:261311","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":2,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0016843","Disease_Description__c":"A rare chromosomal anomaly syndrome resulting from the partial deletion of the long arm of chromosome 20 with a highly variable phenotype typically characterized by hypotonia, intellectual disability, cognitive and language deficits (including decreased or absent speech), pre and post-natal growth retardation, feeding difficulties, microcephaly, and malformed hands and feet. Neurodevelopmental disorders (including hyperactivity, social interactive problems and autism spectrum disorder), seizures and dysmorphic facial features (high forehead, hypertelorism, malformed ears, broad nasal bridge, bulbous nasal tip, thin upper lip, small chin) are frequently associated.","GARD_Name__c":"20q13.33 microdeletion syndrome","GARD_Synonym__c":"del(20)(q13.33); monosomy 20q13.33","Curated_Disease_Description_Source__c":"MONDO:0016843","Curated_Disease_Description__c":"A rare chromosomal anomaly syndrome resulting from the partial deletion of the long arm of chromosome 20 with a highly variable phenotype typically characterized by hypotonia, intellectual disability, cognitive and language deficits (including decreased or absent speech), pre and post-natal growth retardation, feeding difficulties, microcephaly, and malformed hands and feet. Neurodevelopmental disorders (including hyperactivity, social interactive problems and autism spectrum disorder), seizures and dysmorphic facial features (high forehead, hypertelorism, malformed ears, broad nasal bridge, bulbous nasal tip, thin upper lip, small chin) are frequently associated.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"as a Newborn","SourceID__c":"ORPHA:261311","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0016843","ORPHANET_ID__c":"ORPHA:261311","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de microdeleción 20q13.33","Spanish_Description_Source__c":"ORPHA:261311","Spanish_Description__c":"Es un síndrome poco frecuente de anomalías cromosómicas resultante de la deleción parcial del brazo largo del cromosoma 20 con un fenotipo altamente variable. Se caracteriza típicamente por hipotonía, discapacidad intelectual, déficit cognitivo y del lenguaje (incluyendo disminución o ausencia del habla), retraso del crecimiento pre- y postnatal, dificultades de alimentación, microcefalia y malformaciones de manos y pies. Se asocia frecuentemente a trastornos del neurodesarrollo (incluyendo hiperactividad, problemas de interacción social y trastornos del espectro autista), crisis y rasgos faciales dismórficos (frente alta, hipertelorismo, orejas malformadas, puente nasal ancho, punta nasal bulbosa, labio superior fino y barbilla pequeña).","Spanish_Disease_Name__c":"síndrome de microdeleción 20q13.33","Spanish_GARD_Synonym__c":"del(20)(q13.33); monosomía 20q13.33","Category_Linearization__c":"ORPHA:93890","icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"A rare chromosomal anomaly syndrome resulting from the partial deletion of the long arm of chromosome 20 with a highly variable phenotype typically characterized by hypotonia, intellectual disability, cognitive and language deficits (including decreased or absent speech), pre and post-natal growth retardation, feeding difficulties, microcephaly, and malformed hands and feet. Neurodevelopmental disorders (including hyperactivity, social interactive problems and autism spectrum disorder), seizures and dysmorphic facial features (high forehead, hypertelorism, malformed ears, broad nasal bridge, bulbous nasal tip, thin upper lip, small chin) are frequently associated.","Curated_Disease_Description_Source__c":"MONDO:0016843","GARD_Synonym__c":"del(20)(q13.33); monosomy 20q13.33","Name":"20q13.33 microdeletion syndrome","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Unique","Website__c":"https://rarechromo.org/"},{"Account_Name__c":"Chromosome Disorder Outreach","Website__c":"https://chromodisorder.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Chromosomal Anomaly","Tag_Category__c":"Account;Cause","curated_tag_name":"Chromosome disorders"},{"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":"Congenital Abnormality","Tag_Category__c":"Disease Category","category_description":"Birth defects are structural changes present at birth that can affect almost any part of the body, including how the body looks, works, or both.","curated_tag_name":"Birth defects"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:261311"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.orpha.net/en/disease/detail/261311","Source__c":"C4518823; MONDO:0016843; ORPHA:261311","Xref__c":"ORPHA:261311"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1384661","Source__c":"C4518823","Xref__c":"MEDGEN:1384661"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=733520002","Source__c":"C4518823; MONDO:0016843","Xref__c":"733520002"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4518823","Source__c":"C4518823","Xref__c":"C4518823"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0016843","Source__c":"GARD:0020778","Xref__c":"MONDO:0016843"}],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The passage of fresh (red) blood per anus, usually in or with stools. Most rectal bleeding comes from the colon, rectum, or anus.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002573","HPO_Synonym__c":"Rectal bleeding","HPO_Name__c":"Hematochezia","Feature_System__c":"Cardiovascular System; Digestive System; Blood and Blood-Forming Tissue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An eye that is protruding anterior to the plane of the face to a greater extent than is typical.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000520","HPO_Synonym__c":"Anterior bulging of the globe; Anterior bulging of the globe of eye; Bulging eye; Exophthalmos; Eyeballs bulging out; Ocular proptosis; Prominent eyes; Prominent globes; Protruding eyes; Protrusio bulbi","HPO_Name__c":"Proptosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Increased dimensions of the Virchow-Robin spaces (also known as perivascular spaces), which surround the walls of vessels as they course from the subarachnoid space through the brain parenchyma. Perivascular spaces are commonly microscopic, and not visible on conventional neuroimaging. This term refers to an increase of size of these spaces such that they are visible on neuroimaging (usually magnetic resonance imaging). The dilatations are regular cavities that always contain a patent artery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012520","HPO_Synonym__c":"Dilated Virchow-Robin spaces; Perivascular spaces","HPO_Name__c":"Dilation of Virchow-Robin spaces","Feature_System__c":"Nervous System; Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Decreased number or density of the folded ridges (wrinkles) of skin of the scrotum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012858","HPO_Name__c":"Decreased scrotal rugation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006709","HPO_Synonym__c":"Absent/rudimentary nipples; Absent/small nipples; Absent/underdeveloped nipples; Nipples absent or rudimentary","HPO_Name__c":"Aplasia/Hypoplasia of the nipples","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Shortening of the legs related to developmental hypoplasia of the bones of the leg.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006385","HPO_Synonym__c":"Short legs; Short lower limbs","HPO_Name__c":"Short lower limbs","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Talipes equinovarus (also called clubfoot) typically has four main components: inversion and adduction of the forefoot; inversion of the heel and hindfoot; equinus (limitation of extension) of the ankle and subtalar joint; and internal rotation of the leg.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001762","HPO_Synonym__c":"Club feet; Club foot; Clubbing of feet; Clubfeet; Clubfoot; Equinovarus; Foot, talipes equinovarus; Pes equinovarus; Pes equinus","HPO_Name__c":"Talipes equinovarus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","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":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Facial contour, as viewed from the front, triangular in shape, with breadth at the temples and tapering to a narrow chin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000325","HPO_Synonym__c":"Face with broad temples and narrow chin; Inverted triangular face; Triangular face; Triangular facial shape; Triangular facies","HPO_Name__c":"Triangular face","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001531","HPO_Synonym__c":"Failure to thrive in first year of life; Faltering weight in infancy; Weight faltering in infancy","HPO_Name__c":"Failure to thrive in infancy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Width of the forehead or distance between the frontotemporales is more than two standard deviations below the mean (objective); or apparently narrow intertemporal region (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000341","HPO_Synonym__c":"Bitemporal narrowing; Bitemporal narrowness; Bitemporal skull narrowing; Decreased width of the forehead; Intertemporal narrowing; Narrow bitemporal diameter; Narrow bitemporal width; Narrow forehead; Temporal narrowness","HPO_Name__c":"Narrow forehead","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The palpebral fissure inclination is more than two standard deviations above the mean for age (objective); or, the inclination of the palpebral fissure is greater than typical for age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000582","HPO_Synonym__c":"Mongoloid slant; Upslanting palpebral fissures; Upward slanted palpebral fissures; Upward slanting of palpebral fissures; Upward slanting of the opening between the eyelids; Upward slanting palpebral fissures","HPO_Name__c":"Upslanted palpebral fissure","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","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:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The gradual reduction in girth of the finger from proximal to distal.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001182","HPO_Synonym__c":"Distally tapering fingers; Tapered finger; Tapered fingertips; Tapering fingers","HPO_Name__c":"Tapered finger","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A deficiency or slowing down of growth pre- and postnatally.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001510","HPO_Synonym__c":"Delayed growth; Growth deficiency; Growth delay; Growth failure; Growth retardation; Poor growth; Retarded growth","HPO_Name__c":"Growth delay","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Smaller than normal size according to sex and gestational age related norms, defined as a weight below the 10th percentile for the gestational age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001518","HPO_Synonym__c":"Birth weight less than 10th percentile; Low birth weight; Small for gestational age","HPO_Name__c":"Small for gestational age","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The palpebral fissure inclination is more than two standard deviations below the mean.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000494","HPO_Synonym__c":"Antimongoloid eye slant; Antimongoloid slant of palpebral fissures; Antimongoloid slanted palpebral fissures; Down slanting palpebral fissures; Down-slanted palpebral fissures; Down-slanting palpebral fissure; Down-slanting palpebral fissures; Downslanting palpebral fissure; Downslanting palpebral fissures; Downward slanted palpebral fissures; Downward slanting of the opening between the eyelids; Downward slanting palpebral fissures; Downward-slanting palpebral fissures; Palpebral fissures down-slanted","HPO_Name__c":"Downslanted palpebral fissures","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased volume and globular shape of the anteroinferior aspect of the nose.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000414","HPO_Synonym__c":"Bulbous nose","HPO_Name__c":"Bulbous nose","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","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":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal position of urethral meatus on the ventral penile shaft (underside) characterized by displacement of the urethral meatus from the tip of the glans penis to the ventral surface of the penis, scrotum, or perineum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000047","HPO_Synonym__c":"Hypospadia","HPO_Name__c":"Hypospadias","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","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":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Underdevelopment of the arch of aorta.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012304","HPO_Synonym__c":"Aortic arch hypoplasia; Underdeveloped aortic arch","HPO_Name__c":"Hypoplastic aortic arch","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of a cardiac ventricle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001713","HPO_Synonym__c":"Abnormality of cardiac ventricle","HPO_Name__c":"Abnormal cardiac ventricle morphology","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","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:261311","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Any abnormality of bones of the arms or legs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002813","HPO_Synonym__c":"Abnormal shape of limb bone; Abnormality of limb bone morphology; Arm and/or leg bone differences; Limb abnormality","HPO_Name__c":"Abnormal limb bone morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of abnormal location of the ears in which the position of the ears is characterized by posterior rotation (the superior part of the ears is rotated towards the back of the head, and the inferior part of the ears towards the front).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000358","HPO_Synonym__c":"Ear, posterior angulation, increased; Ears rotated toward back of head; Posteriorly angulated ears; Posteriorly rotated; Posteriorly rotated auricles; Posteriorly-angulated ears; Posteriorly-rotated ears","HPO_Name__c":"Posteriorly rotated ears","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Displacement of the femur from its normal location in the hip joint.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002827","HPO_Synonym__c":"Dislocated femoral heads; Dislocated hips; Dislocation of hip; Dislocation of the femoral head; Hip dislocation","HPO_Name__c":"Hip dislocation","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Neurodevelopmental delay (NDD) refers to delays in the maturation of the brain and central nervous system; infants and young children with NDD may experience delays in the development of one or more skills including gross motor abilities, fine-motor coordination, language abilities and ability to solve increasingly complex problems.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012758","HPO_Synonym__c":"NDD","HPO_Name__c":"Neurodevelopmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","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:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Diminished amniotic fluid volume in pregnancy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001562","HPO_Synonym__c":"Low levels of amniotic fluid; Maternal oligohydramnios","HPO_Name__c":"Oligohydramnios","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Height of the vermilion of the medial part of the lip more than 2 SD below the mean, or apparently reduced height of the vermilion of the lip in the frontal view. The vermilion is the red part of the lips (and confusingly, the vermilion itself is also often referred to as being equivalent the lips).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000233","HPO_Synonym__c":"Decreased volume of lip; Decreased volume of lip vermillion; Thin lips; Thin vermillion","HPO_Name__c":"Thin vermilion border","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The term intellectual disability or intellectual developmental disorder is used to describe significantly sub-average intellectual and adaptive functioning based on clinical assessment and as measured by individually administered, appropriately normed, standardized and validated tests of intellectual functioning and adaptive behavior, with onset during the developmental period from infancy through adolescence.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001249","HPO_Synonym__c":"Intellectual disability; Mental deficiency; Mental retardation; Mental retardation, nonspecific; Mental-retardation; Nonprogressive intellectual disability; Nonprogressive mental retardation","HPO_Name__c":"Intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced muscle tone of a muscle that is innervated by the facial nerve (the seventh cranial nerve).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000297","HPO_Synonym__c":"Decreased facial muscle tone; Hypotonic facies; Low facial muscle tone; Reduced facial muscle tone","HPO_Name__c":"Facial hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Lateral deviation of the great toe (i.e., in the direction of the little toe).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001822","HPO_Synonym__c":"Bunion; Lateral deviation of great toe; Lateral deviation of halluces","HPO_Name__c":"Hallux valgus","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","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:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Interalar distance more than 2 SD below the mean for age, or alternatively, an apparently decreased width of the nasal base and alae.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000460","HPO_Synonym__c":"Decreased nasal breadth; Decreased nasal width; Narrow nose; Thin nose","HPO_Name__c":"Narrow nose","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of an abnormally prominent of the crus of the helix. That is, development of the crus helix to the same degree as an average antihelix stem or helix.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0009899","HPO_Synonym__c":"Abnormal prominence of the crus of the ear; Helix, crus, prominent; Hyperplastic helix crus; Hypertrophic helix crus","HPO_Name__c":"Prominent crus of helix","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A foot where the longitudinal arch of the foot is in contact with the ground or floor when the individual is standing; or, in a patient lying supine, a foot where the arch is in contact with the surface of a flat board pressed against the sole of the foot by the examiner with a pressure similar to that expected from weight bearing; or, the height of the arch is reduced.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001763","HPO_Synonym__c":"Flat feet; Flat foot","HPO_Name__c":"Pes planus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A cutaneous indentation resulting from tethering of the skin to underlying structures (bone) of the intergluteal cleft.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000960","HPO_Synonym__c":"Pilonidal dimple; Spinal dimple","HPO_Name__c":"Sacral dimple","Feature_System__c":"Skin System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","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:261311","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Interpupillary distance more than 2 SD above the mean (alternatively, the appearance of an increased interpupillary distance or widely spaced eyes).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000316","HPO_Synonym__c":"Excessive orbital separation; Increased distance between eye sockets; Increased distance between eyes; Increased interpupillary distance; Ocular hypertelorism; Wide-set eyes; Widely spaced eyes; Widened interpupillary distance","HPO_Name__c":"Hypertelorism","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261311","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A degree of language development that is significantly below the norm for a child of a specified age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000750","HPO_Synonym__c":"Deficiency of speech development; Delayed language development; Delayed speech; Delayed speech acquisition; Delayed speech and language development; Delayed speech development; Impaired speech and language development; Impaired speech development; Language delay; Language delayed; Language development deficit; Late-onset speech development; Poor language development; Speech and language delay; Speech and language difficulties; Speech delay","HPO_Name__c":"Delayed speech and language development","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Account":["Chromosomal Anomaly"],"Cause":["Chromosomal Anomaly","Genetics"],"Disease Category":["Genetics","Congenital Abnormality"],"Specialist":["Genetics","Pediatrics"]},"synonyms":["del(20)(q13.33)"," monosomy 20q13.33"]}