{"Name":"Maternal uniparental disomy of chromosome 20","DiseaseID__c":"GARD:0016849","id":16849,"encodedName":"maternal-uniparental-disomy-of-chromosome-20","IsDeleted":false,"Disease_Name_Full__c":"Maternal uniparental disomy of chromosome 20","Xref_IDs__c":"715735007; C4275029; DOID:0111714; MEDGEN:909388; MONDO:0019917; OMIM:617352; ORPHA:96186","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":2,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0019917","Disease_Description__c":"Maternal uniparental disomy of chromosome 20 (UPD 20) is a very rare chromosomal anomaly in which both copies of chromosome 20 are inherited from the mother. The main feature described is prenatal and postnatal growth retardation. Microcephaly, minor dysmorphic features and psychomotor developmental delay have been occasionally reported. Maternal UPD20 is most often ascertained by a mosaic trisomy 20 pregnancy.","GARD_Name__c":"Maternal uniparental disomy of chromosome 20","GARD_Synonym__c":"maternal uniparental disomy of chromosome type 20; maternal upd(20); maternal upd20 (uniparental disomy of chromosome 20); mulchandani-bhoj-conlin syndrome; uniparental disomy, maternal, chromosome 20; upd(20)mat","Curated_Disease_Description_Source__c":"MONDO:0019917","Curated_Disease_Description__c":"Maternal uniparental disomy of chromosome 20 (UPD 20) is a very rare chromosomal anomaly in which both copies of chromosome 20 are inherited from the mother. The main feature described is prenatal and postnatal growth retardation. Microcephaly, minor dysmorphic features and psychomotor developmental delay have been occasionally reported. Maternal UPD20 is most often ascertained by a mosaic trisomy 20 pregnancy.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"during Pregnancy and as a Newborn","SourceID__c":"ORPHA:96186","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0019917","ORPHANET_ID__c":"ORPHA:96186","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de disomía uniparental materna del cromosoma 20","Spanish_Description_Source__c":"ORPHA:96186","Spanish_Description__c":"La disomía uniparental materna del cromosoma 20 (DUP 20) es una anomalía cromosómica muy poco frecuente en la que ambas copias del cromosoma 20 son heredadas de la madre. El principal rasgo descrito consiste en un retraso del crecimiento prenatal y postnatal. Ocasionalmente se ha observado microcefalia, rasgos dismórficos menores y un retraso del desarrollo psicomotor. La UPD20 materna es frecuentemente constatada por la detección de una trisomía 20 en mosaico durante el embarazo.","Spanish_Disease_Name__c":"síndrome de disomía uniparental materna del cromosoma 20","Spanish_GARD_Synonym__c":"upd(20) materna; upd(20)mat","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":"Maternal uniparental disomy of chromosome 20 (UPD 20) is a very rare chromosomal anomaly in which both copies of chromosome 20 are inherited from the mother. The main feature described is prenatal and postnatal growth retardation. Microcephaly, minor dysmorphic features and psychomotor developmental delay have been occasionally reported. Maternal UPD20 is most often ascertained by a mosaic trisomy 20 pregnancy.","Curated_Disease_Description_Source__c":"MONDO:0019917","GARD_Synonym__c":"maternal uniparental disomy of chromosome type 20; maternal upd(20); maternal upd20 (uniparental disomy of chromosome 20); mulchandani-bhoj-conlin syndrome; uniparental disomy, maternal, chromosome 20; upd(20)mat","Name":"Maternal uniparental disomy of chromosome 20","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":"Neonatal","Provided_By__c":"ORPHA:96186"},{"Age_At_Onset__c":"Antenatal","Provided_By__c":"ORPHA:96186"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.omim.org/entry/617352","Source__c":"C4275029; MONDO:0019917; ORPHA:96186","Xref__c":"OMIM:617352"},{"URL__c":"https://www.orpha.net/en/disease/detail/96186","Source__c":"C4275029; MONDO:0019917; ORPHA:96186","Xref__c":"ORPHA:96186"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0111714","Source__c":"MONDO:0019917","Xref__c":"DOID:0111714"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4275029","Source__c":"C4275029","Xref__c":"C4275029"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=715735007","Source__c":"C4275029; MONDO:0019917","Xref__c":"715735007"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=909388","Source__c":"C4275029","Xref__c":"MEDGEN:909388"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0019917","Source__c":"GARD:0016849","Xref__c":"MONDO:0019917"}],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An angulation of a digit at an interphalangeal joint in the plane of the palm (finger) or sole (toe).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030084","HPO_Synonym__c":"Permanent curving of the finger","HPO_Name__c":"Clinodactyly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal restriction of fetal growth with fetal weight below the tenth percentile for gestational age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001511","HPO_Synonym__c":"Fetal growth restriction; FGR; In utero growth retardation; Intrauterine growth failure; Intrauterine growth restriction; Intrauterine growth retardation, IUGR; Intrauterine retardation; IUGR; Prenatal growth deficiency; Prenatal growth failure; Prenatal growth retardation; Prenatal onset growth retardation; Prenatal-onset growth retardation; Small for gestational age infant","HPO_Name__c":"Intrauterine growth retardation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Frequent (30-79%)","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:96186","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001263","HPO_Synonym__c":"Delayed cognitive development; Delayed development; Delayed developmental milestones; Delayed intellectual development; Delayed milestones; Delayed psychomotor development; Developmental delay; Developmental delay in early childhood; Developmental delay, global; Developmental retardation; GDD; Lack of psychomotor development; Motor and developmental delay; Motormental retardation; Psychomotor delay; Psychomotor development deficiency; Psychomotor development failure; Psychomotor developmental delay; Retarded development; Retarded mental development; Retarded psychomotor development","HPO_Name__c":"Global developmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","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:96186","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Forward prominence of the entire forehead, due to protrusion of the frontal bone.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011220","HPO_Synonym__c":"Prominence of frontal region; Prominent forehead; Pronounced forehead; Protruding forehead","HPO_Name__c":"Prominent forehead","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Frequent (30-79%)","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:96186","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A growth pattern that displays an abnormal difference between the left and the right side.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100555","HPO_Synonym__c":"Uneven or disproportionate growth of one body part compared to another","HPO_Name__c":"Asymmetric growth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Impaired feeding performance of an infant as manifested by difficulties such as weak and ineffective sucking, brief bursts of sucking, and falling asleep during sucking. There may be difficulties with chewing or maintaining attention.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008872","HPO_Name__c":"Feeding difficulties in infancy","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally low body weight.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004325","HPO_Synonym__c":"Decreased body weight; Decreased weight; Low body weight; Low weight; Weight less than 3rd percentile","HPO_Name__c":"Decreased body weight","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Frequent (30-79%)","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:96186","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":"ORPHA:96186","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Concentration of growth hormone in the blood circulation below normal limits.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0034323","HPO_Synonym__c":"Growth hormone deficiency; Somatotropin deficiency","HPO_Name__c":"Reduced circulating growth hormone concentration","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:96186","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Slow or limited growth after birth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008897","HPO_Synonym__c":"Growth delay as children; Growth retardation as children; Postnatal growth deceleration; Postnatal growth deficiency; Postnatal growth failure","HPO_Name__c":"Postnatal growth retardation","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Account":["Chromosomal Anomaly"],"Cause":["Chromosomal Anomaly","Genetics"],"Disease Category":["Genetics","Congenital Abnormality"],"Specialist":["Genetics","Pediatrics"]},"synonyms":["maternal uniparental disomy of chromosome type 20"," maternal upd(20)"," maternal upd20 (uniparental disomy of chromosome 20)"," mulchandani-bhoj-conlin syndrome"," uniparental disomy, maternal, chromosome 20"," upd(20)mat"]}