{"Name":"Chromosome 8q21.11 deletion syndrome","DiseaseID__c":"GARD:0017310","id":17310,"encodedName":"chromosome-8q2111-deletion-syndrome","IsDeleted":false,"Disease_Name_Full__c":"Chromosome 8q21.11 deletion syndrome","Xref_IDs__c":"718615003; C3280231; DOID:0060425; MEDGEN:481861; MONDO:0013646; OMIM:614230; ORPHA:284160","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":4,"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":4,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0013646","Disease_Description__c":"8q21.11 microdeletion syndrome encompasses heterozygous overlapping microdeletions on chromosome 8q21.11 resulting in intellectual disability, facial dysmorphism comprising a round face, ptosis, short philtrum, Cupid's bow and prominent low-set ears, nasal speech and mild finger and toe anomalies.","GARD_Name__c":"Chromosome 8q21.11 deletion syndrome","GARD_Synonym__c":"8q21.11 microdeletion syndrome; chromosome 8q21.11 deletion syndrome, isolated cases; del(8)(q21.11); deletion 8q21.11; monosomy 8q21.11","Curated_Disease_Description_Source__c":"MONDO:0013646","Curated_Disease_Description__c":"8q21.11 microdeletion syndrome encompasses heterozygous overlapping microdeletions on chromosome 8q21.11 resulting in intellectual disability, facial dysmorphism comprising a round face, ptosis, short philtrum, Cupid's bow and prominent low-set ears, nasal speech and mild finger and toe anomalies.","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:284160","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0013646","ORPHANET_ID__c":"ORPHA:284160","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de microdeleción 8q21.11","Spanish_Description_Source__c":"ORPHA:284160","Spanish_Description__c":"El síndrome de microdeleción 8q21.11 abarca microdeleciones heterocigotas superpuestas en el cromosoma 8q21.11 que dan lugar a discapacidad intelectual y a un dismorfismo facial que incluye una cara redonda, ptosis, filtrum corto, arco de Cupido marcado y orejas prominentes de implantación baja, habla nasal y anomalías leves en los dedos de manos y pies.","Spanish_Disease_Name__c":"síndrome de microdeleción 8q21.11","Spanish_GARD_Synonym__c":"del(8)(q21.11); deleción 8q21.11; monosomía 8q21.11","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":"8q21.11 microdeletion syndrome encompasses heterozygous overlapping microdeletions on chromosome 8q21.11 resulting in intellectual disability, facial dysmorphism comprising a round face, ptosis, short philtrum, Cupid's bow and prominent low-set ears, nasal speech and mild finger and toe anomalies.","Curated_Disease_Description_Source__c":"MONDO:0013646","GARD_Synonym__c":"8q21.11 microdeletion syndrome; chromosome 8q21.11 deletion syndrome, isolated cases; del(8)(q21.11); deletion 8q21.11; monosomy 8q21.11","Name":"Chromosome 8q21.11 deletion 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":"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":"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":"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":"Neonatal","Provided_By__c":"ORPHA:284160"},{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:284160"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.orpha.net/en/disease/detail/284160","Source__c":"C3280231; MONDO:0013646","Xref__c":"ORPHA:284160"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=481861","Source__c":"C3280231","Xref__c":"MEDGEN:481861"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=718615003","Source__c":"MONDO:0013646","Xref__c":"718615003"},{"URL__c":"https://www.omim.org/entry/614230","Source__c":"C3280231; MONDO:0013646; ORPHA:284160","Xref__c":"OMIM:614230"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0060425","Source__c":"MONDO:0013646","Xref__c":"DOID:0060425"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C3280231","Source__c":"C3280231","Xref__c":"C3280231"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0013646","Source__c":"GARD:0017310","Xref__c":"MONDO:0013646"}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A developmental anomaly characterized by abnormal smallness of one or both eyes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000568","HPO_Synonym__c":"Abnormally small eyeball; Abnormally small globe of eye; Microphthalmos","HPO_Name__c":"Microphthalmia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormally increased height of the forehead.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000348","HPO_Synonym__c":"High forehead","HPO_Name__c":"High forehead","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Interalar distance more than two standard deviations above the mean for age, i.e., an apparently increased width of the nasal base and alae.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000445","HPO_Synonym__c":"Broad nose; Increased breadth of nose; Increased nasal breadth; Increased nasal width; Increased width of nose; Wide nose","HPO_Name__c":"Wide nose","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Absence or underdevelopment of the corpus callosum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007370","HPO_Synonym__c":"Absent/hypoplastic corpus callosum; Agenesis/hypoplastic corpus callosum; Complete or partial absence of the corpus callosum; Hypoplasia or absence of the corpus callosum; Hypoplastic or absent corpus callosum","HPO_Name__c":"Aplasia/Hypoplasia of the corpus callosum","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The absence of the major creases of the palm (distal transverse crease, proximal transverse crease, or thenar crease).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010489","HPO_Synonym__c":"Absence of the palmar creases; Absent palm lines; Aplasia of the palmar creases","HPO_Name__c":"Absent palmar crease","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any abnormality of the teeth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000164","HPO_Synonym__c":"Abnormal dentition; Abnormal teeth; Dental abnormalities; Dental abnormality; Dental anomalies","HPO_Name__c":"Abnormality of the dentition","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The distal interphalangeal joint and/or the proximal interphalangeal joint of the fingers cannot be extended to 180 degrees by either active or passive extension.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100490","HPO_Synonym__c":"Camptodactyly of hands; Camptodactyly of proximal interphalangeal joint; Contractures of the proximal interphalangeal joints of the fingers; Flexion contractures of proximal interphalangeal joints; Permanent flexion of the finger; Proximal interphalangeal finger joint contractures","HPO_Name__c":"Camptodactyly of finger","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","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:284160","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:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A reduction of corneal clarity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007957","HPO_Synonym__c":"Corneal clouding; Corneal opacities; Reduction of corneal clarity; Scarring or clouding of the cornea of the eye","HPO_Name__c":"Corneal opacity","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Webbing or fusion of the fingers, involving soft parts only or including bone structure. Bony fusions are referred to as \\\"bony\\\" Syndactyly if the fusion occurs in a radio-ulnar axis. Fusions of bones of the fingers in a proximo-distal axis are referred to as \\\"Symphalangism\\\".","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006101","HPO_Synonym__c":"Partial syndactyly","HPO_Name__c":"Finger syndactyly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Very frequent (80-99%)","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:284160","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:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An anomaly in the ability to perceive and distinguish scents (odors).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004408","HPO_Synonym__c":"Abnormal sense of smell; Abnormality of olfaction; Abnormality of the sense of smell; Smell defect","HPO_Name__c":"Abnormality of the sense of smell","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal reduction in the amount of pigmentation of the iris.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007730","HPO_Synonym__c":"Light eye color; Reduced iris pigmentation","HPO_Name__c":"Iris hypopigmentation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","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:284160","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The upper eyelid margin is positioned 3 mm or more lower than usual and covers the superior portion of the iris (objective); or, the upper lid margin obscures at least part of the pupil (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000508","HPO_Synonym__c":"Blepharoptosis; Drooping upper eyelid; Eyelid ptosis; Palpebral ptosis","HPO_Name__c":"Ptosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any abnormal shape or structure of the metacarpal bones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005916","HPO_Synonym__c":"Abnormal shape of long bones of hand; Abnormal shape of metacarpal bones","HPO_Name__c":"Abnormal metacarpal morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","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:284160","HPO_Frequency__c":"Frequent (30-79%)","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:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A fixed reduction in the vertical distance between the upper and lower eyelids with short palpebral fissures.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000581","HPO_Synonym__c":"Decreased width of palpebral fissure; Narrow opening between the eyelids","HPO_Name__c":"Blepharophimosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of speech characterized by the presence of an abnormally increased nasal airflow during speech associated with structural abnormality of the nasal passages.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001611","HPO_Synonym__c":"Hypernasal voice; Nasal speech; Nasal voice","HPO_Name__c":"Hypernasal speech","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A cataract is an opacity or clouding that develops in the crystalline lens of the eye or in its capsule.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000518","HPO_Synonym__c":"Cataracts; Clouding of the lens of the eye; Cloudy lens; Lens opacities; Lens opacity","HPO_Name__c":"Cataract","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The facial appearance is more circular than usual as viewed from the front.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000311","HPO_Synonym__c":"Circular face; Round face; Round facial appearance; Round facial shape; Round facies","HPO_Name__c":"Round face","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Distance between nasal base and midline upper lip vermilion border more than 2 SD below the mean. Alternatively, an apparently decreased distance between nasal base and midline upper lip vermilion border.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000322","HPO_Synonym__c":"Decreased height of philtrum; Decreased length of philtrum; Decreased vertical dimension of philtrum; Vertical hypoplasia of philtrum","HPO_Name__c":"Short philtrum","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","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:284160","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"More pronounced paramedian peaks and median notch of the Cupid's bow.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002263","HPO_Synonym__c":"Cupid bow upper lip; Cupid's bow, accentuated; Cupid-bow shaped upper lip; Exaggerated cupid's bow; Prominent cupid-bow of upper lip","HPO_Name__c":"Exaggerated cupid's bow","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Diminished length of the neck.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000470","HPO_Synonym__c":"Decreased length of neck; Short neck","HPO_Name__c":"Short neck","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A morphological abnormality of the mouth in which the angle of the mouth is downturned. The oral commissures are positioned inferior to the midline labial fissure.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002714","HPO_Synonym__c":"Downturned corners of mouth; Downturned corners of the mouth; Downturned mouth; Downturned oral commisures","HPO_Name__c":"Downturned corners of mouth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","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:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Testis in inguinal canal. That is, absence of one or both testes from the scrotum owing to failure of the testis or testes to descend through the inguinal canal to the scrotum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000028","HPO_Synonym__c":"Cryptorchism; Undescended testes; Undescended testis","HPO_Name__c":"Cryptorchidism","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A congenital anomaly in which a part or the whole of the cornea acquires the characteristics of sclera, resulting in clouding of the cornea.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000647","HPO_Synonym__c":"Hardening of skin and connective tissue","HPO_Name__c":"Sclerocornea","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A decreased magnitude of the sensory perception of sound.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000365","HPO_Synonym__c":"Deafness; Hearing defect; Hearing impairment; Hypacusis","HPO_Name__c":"Hearing impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Eczema is a form of dermatitis that is characterized by scaly, pruritic, erythematous lesions located on flexural surfaces.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000964","HPO_Synonym__c":"Eczema","HPO_Name__c":"Eczematoid dermatitis","Feature_System__c":"Skin System; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000218","HPO_Synonym__c":"Elevated palate; High arched palate; High palate; High, arched palate; High-arched palate; Increased palatal height; Palate high-arched; Palate, high-arched","HPO_Name__c":"High palate","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Upper insertion of the ear to the scalp below an imaginary horizontal line drawn between the inner canthi of the eye and extending posteriorly to the ear.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000369","HPO_Synonym__c":"Low set ears; Low-set ears; Low-set pinnae; Lowset ears; Melotia","HPO_Name__c":"Low-set ears","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008736","HPO_Synonym__c":"Underdeveloped penis","HPO_Name__c":"Hypoplasia of penis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormal morphology (form) of the face or its components.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001999","HPO_Synonym__c":"Abnormal facial shape; Abnormal morphology of the face; Distinctive facies; Dysmorphic facial features; Dysmorphic facies; Facial dysmorphism; Unusual facial appearance; Unusual facies","HPO_Name__c":"Abnormal facial shape","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:284160","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Thinned, deficient, or excessively arched ala nasi.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000430","HPO_Synonym__c":"Ala nasi, underdeveloped; Alar cartilage hypoplasia; Decreased size of nasal alae; Hypoplastic alae nasae; Hypoplastic alae nasi; Hypoplastic alar cartilage; Hypoplastic alar nasae; Hypoplastic nares; Hypoplastic nasal alae; Hypoplastic nasal wings; Hypoplastic nostrils; Nasal cartilage hypoplasia; Small nasal alae; Thin hypoplastic alae nasi; Underdeveloped tissue around nostril","HPO_Name__c":"Underdeveloped nasal alae","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Account":["Chromosomal Anomaly"],"Cause":["Chromosomal Anomaly","Genetics"],"Disease Category":["Genetics","Neurology","Congenital Abnormality"],"Specialist":["Genetics","Neurology","Neurodevelopmental disabilities","Pediatrics"]},"synonyms":["8q21.11 microdeletion syndrome"," chromosome 8q21.11 deletion syndrome, isolated cases"," del(8)(q21.11)"," deletion 8q21.11"," monosomy 8q21.11"]}