{"Name":"20p12.3 microdeletion syndrome","DiseaseID__c":"GARD:0012492","id":12492,"encodedName":"20p123-microdeletion-syndrome","IsDeleted":false,"Disease_Name_Full__c":"20p12.3 microdeletion syndrome","Xref_IDs__c":"719650004; C4304539; MEDGEN:930208; MONDO:0016841; OMIM:617877; ORPHA:261295","USA_Estimate__c":"1,000","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":"1 to 8,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":3,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0016841","Disease_Description__c":"20p12.3 microdeletion syndrome is a recently described syndrome characterized by Wolff-Parkinson-White syndrome (see this term), variable developmental delay and facial dysmorphism.","GARD_Name__c":"20p12.3 microdeletion syndrome","GARD_Synonym__c":"del(20)(p12.3); monosomy 20p12.3","Curated_Disease_Description_Source__c":"ORPHA:261295","Curated_Disease_Description__c":"20p12.3 microdeletion syndrome is a condition in which people can have variable health problems due to missing genetic information on chromosome 20. This can lead to heart conditions, such as Wolff-Parkinson-White syndrome (a disorder of the cardiac conduction system due to the presence of an extra electrical pathway in the heart that leads to periods of rapid heart rate [tachycardia]), atrial septal defect (ASD), and patent ductus arteriosus (PDA). People with this microdeletion syndrome may also have developmental delays (delays in meeting milestones such as walking and talking). Some people with this condition may also have cleft lip or cleft palate and similar facial features to each other. Missing the genetic information encoded on the short arm (p arm) of chromosome 20 at location 12.3 leads to these differences in development and features. Deletions that are larger in size may cause other health conditions as well. Microdeletions can be inherited from a parent or occur for the first time (de novo) in a person.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":"ORPHA:261295","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0016841","ORPHANET_ID__c":"ORPHA:261295","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de microdeleción 20p12.3","Spanish_Description_Source__c":"ORPHA:261295","Spanish_Description__c":"El síndrome de microdeleción 20p12.3 es un síndrome descrito recientemente que se caracteriza por un síndrome de Wolff-Parkinson-White, un retraso psicomotor variable y dismorfia facial.","Spanish_Disease_Name__c":"síndrome de microdeleción 20p12.3","Spanish_GARD_Synonym__c":"del(20)(p12.3); monosomía 20p12.3","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":"20p12.3 microdeletion syndrome is a condition in which people can have variable health problems due to missing genetic information on chromosome 20. This can lead to heart conditions, such as Wolff-Parkinson-White syndrome (a disorder of the cardiac conduction system due to the presence of an extra electrical pathway in the heart that leads to periods of rapid heart rate [tachycardia]), atrial septal defect (ASD), and patent ductus arteriosus (PDA). People with this microdeletion syndrome may also have developmental delays (delays in meeting milestones such as walking and talking). Some people with this condition may also have cleft lip or cleft palate and similar facial features to each other. Missing the genetic information encoded on the short arm (p arm) of chromosome 20 at location 12.3 leads to these differences in development and features. Deletions that are larger in size may cause other health conditions as well. Microdeletions can be inherited from a parent or occur for the first time (de novo) in a person.","Curated_Disease_Description_Source__c":"ORPHA:261295","GARD_Synonym__c":"del(20)(p12.3); monosomy 20p12.3","Name":"20p12.3 microdeletion syndrome","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Chromosome Disorder Outreach","Website__c":"https://chromodisorder.org/"},{"Account_Name__c":"Unique","Website__c":"https://rarechromo.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":"Infancy","Provided_By__c":"ORPHA:261295"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:261295"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C4304539"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0012492","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=930208","Source__c":"C4304539","Xref__c":"MEDGEN:930208"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4304539","Source__c":"C4304539","Xref__c":"C4304539"},{"URL__c":"https://www.orpha.net/en/disease/detail/261295","Source__c":"C4304539; MONDO:0016841; ORPHA:261295","Xref__c":"ORPHA:261295"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=719650004","Source__c":"C4304539; MONDO:0016841","Xref__c":"719650004"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0016841","Source__c":"GARD:0012492","Xref__c":"MONDO:0016841"},{"URL__c":"https://www.omim.org/entry/617877","Source__c":"ORPHA:261295","Xref__c":"OMIM:617877"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"BMP2","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally small dimension of the Maxilla. Usually creating a malocclusion or malalignment between the upper and lower teeth or resulting in a deficient amount of projection of the base of the nose and lower midface region.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000327","HPO_Synonym__c":"Decreased size of maxilla; Decreased size of upper jaw; Hypoplasia of upper jaw bones; Hypoplastic maxillary bones; Maxillary deficiency; Maxillary hypoplasia; Maxillary micrognathia; Maxillary retrognathia; Maxillary retrusion; Micromaxilla; Small maxilla; Small upper jaw; Small upper jaw bones; Upper jaw deficiency; Upper jaw retrusion","HPO_Name__c":"Hypoplasia of the maxilla","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An increase in width in one or more phalanges of the big toe.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010059","HPO_Synonym__c":"Broad bone of big toe; Broad phalanges of the hallux; Wide bone of big toe","HPO_Name__c":"Broad hallux phalanx","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased thumb width without increased dorso-ventral dimension.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011304","HPO_Synonym__c":"Broad phalanges of the thumb; Broad thumb; Broad thumbs; Wide/broad thumb; Wide/broad thumb phalanges","HPO_Name__c":"Broad thumb","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001250","HPO_Synonym__c":"Epileptic seizure; Seizures","HPO_Name__c":"Seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased thickness of the helix of the ear.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000391","HPO_Synonym__c":"Thick helix","HPO_Name__c":"Thickened helices","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Very frequent (80-99%)","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:261295","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Occipitofrontal (head) circumference greater than 97th centile compared to appropriate, age matched, sex-matched normal standards. Alternatively, a apparently increased size of the cranium.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000256","HPO_Synonym__c":"Increased size of cranium; Increased size of skull; Large head; Large head circumference; Macrocephalus; Macrocrania; Megacephaly","HPO_Name__c":"Macrocephaly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Distance between nasal base and midline upper lip vermilion border more than 2 SD above the mean. Alternatively, an apparently increased distance between nasal base and midline upper lip vermilion border.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000343","HPO_Synonym__c":"Elongated philtrum; Increased height of philtrum; Increased length of philtrum; Increased vertical dimension of philtrum; Vertical hyperplasia of philtrum","HPO_Name__c":"Long philtrum","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased prominence or roundness of soft tissues between zygomata and mandible.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000293","HPO_Synonym__c":"Apple cheeks; Big cheeks; Full cheeks; Increased size of cheeks; Large cheeks","HPO_Name__c":"Full cheeks","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Underdevelopment of the malar prominence of the jugal bone (zygomatic bone in mammals), appreciated in profile, frontal view, and/or by palpation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000272","HPO_Synonym__c":"Decreased size of malar bone; Depressed malar region; Flat cheekbone; Malar hypoplasia; Underdevelopment of malar bone; Zygomatic flattening","HPO_Name__c":"Malar flattening","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A disorder of the cardiac conduction system of the heart characterized by ventricular preexcitation due to the presence of an abnormal accessory atrioventricular electrical conduction pathway.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001716","HPO_Name__c":"Wolff-Parkinson-White syndrome","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001263","HPO_Synonym__c":"Delayed cognitive development; Delayed development; Delayed developmental milestones; Delayed intellectual development; Delayed milestones; Delayed psychomotor development; Developmental delay; Developmental delay in early childhood; Developmental delay, global; Developmental retardation; GDD; Lack of psychomotor development; Motor and developmental delay; Motormental retardation; Psychomotor delay; Psychomotor development deficiency; Psychomotor development failure; Psychomotor developmental delay; Retarded development; Retarded mental development; Retarded psychomotor development","HPO_Name__c":"Global developmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A height below that which is expected according to age and sex norms. Although there is no universally accepted definition of short stature, many refer to \\\"short stature\\\" as height more than 2 standard deviations below the mean for age and sex (or below the 3rd percentile for age and sex dependent norms).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004322","HPO_Synonym__c":"Decreased body height; Height less than 3rd percentile; Short stature; Small stature; Stature below 3rd percentile","HPO_Name__c":"Short stature","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Frequent (30-79%)","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:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased breadth of the nasal bridge (and with it, the nasal root).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000431","HPO_Synonym__c":"Broad nasal bridge; Broad nasal root; Broadened nasal bridge; Increased breadth of bridge of nose; Increased breadth of nasal bridge; Increased width of bridge of nose; Increased width of nasal bridge; Nasal bridge broad; Nasal bridge, wide; Wide bridge of nose; Wide nasal bridge; Widened nasal bridge","HPO_Name__c":"Wide nasal bridge","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Distance between the commissures of the mouth more than 2 SD below the mean. Alternatively, an apparently decreased width of the oral aperture (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000160","HPO_Synonym__c":"Microstomia; Narrow mouth; Small mouth; Small oral aperture","HPO_Name__c":"Narrow mouth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A deformity of the chest caused by overgrowth of the ribs and characterized by protrusion of the sternum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000768","HPO_Synonym__c":"Pigeon chest","HPO_Name__c":"Pectus carinatum","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","HPO_Frequency__c":"Occasional (5-29%)","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:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Underdevelopment of the external ear.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008551","HPO_Synonym__c":"Bilateral microtia; Hypoplasia of the external ear; Hypoplastic ears; Hypoplastic pinna; Small ears; Small pinnae; Underdeveloped ears","HPO_Name__c":"Microtia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","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:261295","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Posterior positioning of the nasal root in relation to the overall facial profile for age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005280","HPO_Synonym__c":"Depressed bridge of nose; Depressed nasal bridge; Depressed nasal root; Flat bridge of nose; Flat nasal bridge; Flat nasal root; Flat, nasal bridge; Flattened nasal bridge; Low nasal bridge; Low nasal root; Retruded bridge of nose; Retruded nasal bridge","HPO_Name__c":"Depressed nasal bridge","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:261295","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:261295","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"}}],"tags":{"Account":["Chromosomal Anomaly"],"Cause":["Chromosomal Anomaly","Genetics"],"Disease Category":["Genetics","Congenital Abnormality"],"Specialist":["Genetics","Pediatrics"]},"synonyms":["del(20)(p12.3)"," monosomy 20p12.3"]}