{"Name":"Hereditary persistence of fetal hemoglobin-intellectual disability syndrome","DiseaseID__c":"GARD:0022458","id":22458,"encodedName":"hereditary-persistence-of-fetal-hemoglobin-intellectual-disability-syndrome","IsDeleted":false,"Disease_Name_Full__c":"Hereditary persistence of fetal hemoglobin-intellectual disability syndrome","Xref_IDs__c":"CN322789; MEDGEN:1002391; MONDO:0850059; OMIM:617101; ORPHA:619233","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":5,"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":2,"Description_Source__c":"ORPHA:619233","Disease_Description__c":null,"GARD_Name__c":"Hereditary persistence of fetal hemoglobin-intellectual disability syndrome","GARD_Synonym__c":"dias-logan syndrome","Curated_Disease_Description_Source__c":"PlainLanguagePilotV2-Jan24","Curated_Disease_Description__c":"Hereditary persistence of fetal hemoglobin-intellectual disability syndrome is a genetic condition present from birth. This syndrome is characterized by slow development of physical and mental skills. This includes affects on walking and coordination. People with this condition may have intellectual disability. They may also have a continued presence of fetal hemoglobin. Hemoglobin is a protein found in red blood cells. Fetal hemoglobin is the main type of hemoglobin that carries oxygen around the body of a developing fetus. It usually disappears in the months after birth. The continued presence of the fetal hemoglobin itself does not cause any symptoms. People with this particular syndrome may have a variety of atypical facial features. These can include a smaller than usual head size, downward slanting eyes, eyes that don't seem to align (strabismus). Features can also include ears that have an atypical shape or structure. This condition is caused by a mutation in the BCL11A gene. It is inherited in an autosomal dominant pattern, meaning that a single copy of the mutated gene is sufficient to cause the disorder. Most people with this syndrome have it because of a new mutation (de novo).","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":"ORPHA:619233","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0850059","ORPHANET_ID__c":"ORPHA:619233","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de persistencia hereditaria de hemoglobina fetal-discapacidad intelectual","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"síndrome de persistencia hereditaria de hemoglobina fetal-discapacidad intelectual","Spanish_GARD_Synonym__c":"síndrome de dias-logan","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":"Hereditary persistence of fetal hemoglobin-intellectual disability syndrome is a genetic condition present from birth. This syndrome is characterized by slow development of physical and mental skills. This includes affects on walking and coordination. People with this condition may have intellectual disability. They may also have a continued presence of fetal hemoglobin. Hemoglobin is a protein found in red blood cells. Fetal hemoglobin is the main type of hemoglobin that carries oxygen around the body of a developing fetus. It usually disappears in the months after birth. The continued presence of the fetal hemoglobin itself does not cause any symptoms. People with this particular syndrome may have a variety of atypical facial features. These can include a smaller than usual head size, downward slanting eyes, eyes that don't seem to align (strabismus). Features can also include ears that have an atypical shape or structure. This condition is caused by a mutation in the BCL11A gene. It is inherited in an autosomal dominant pattern, meaning that a single copy of the mutated gene is sufficient to cause the disorder. Most people with this syndrome have it because of a new mutation (de novo).","Curated_Disease_Description_Source__c":"PlainLanguagePilotV2-Jan24","GARD_Synonym__c":"dias-logan syndrome","Name":"Hereditary persistence of fetal hemoglobin-intellectual disability syndrome","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Simons Searchlight","Website__c":"https://www.simonssearchlight.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Genetics","Tag_Category__c":"Cause;Disease Category;Specialist","category_description":"Genetic diseases affect the DNA, or genetic instructions, which directs how tissues, organs, and body systems function.","curated_tag_name":"Genetic diseases"},{"Tag_Name__c":"Neurology","Tag_Category__c":"Disease Category;Specialist","category_description":"Neurological diseases affect the brain, spinal cord, cranial nerves, autonomic nerves, or other peripheral nerves.","curated_tag_name":"Neurological diseases"},{"Tag_Name__c":"Hematology","Tag_Category__c":"Disease Category;Specialist","category_description":"Blood diseases affect the blood or blood-forming organs, including red blood cells, white blood cells, platelets, plasma, and bone marrow.","curated_tag_name":"Blood 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:619233"},{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:619233"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK547048","Source__c":"Gene Review","Xref__c":"NBK547048"},{"URL__c":"https://www.orpha.net/en/disease/detail/619233","Source__c":"CN322789; MONDO:0850059","Xref__c":"ORPHA:619233"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/CN322789","Source__c":"CN322789","Xref__c":"CN322789"},{"URL__c":"https://www.omim.org/entry/617101","Source__c":"ORPHA:619233","Xref__c":"OMIM:617101"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0850059","Source__c":"GARD:0022458","Xref__c":"MONDO:0850059"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1002391","Source__c":"CN322789","Xref__c":"MEDGEN:1002391"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"BCL11A","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The capability that a joint (or a group of joints) has to move, passively and/or actively, beyond normal limits along physiological axes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001382","HPO_Synonym__c":"Double-Jointed; Extensible joints; Flexible joints; Hyperextensible joints; Increased joint mobility; Increased mobility of joints; Joint hyperextensibility; Joint hyperflexibility; Joint hyperlaxity; Joint laxity; Joints move beyond expected range of motion; Lax joints; Loose-jointedness","HPO_Name__c":"Joint hypermobility","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Anteriorly-facing nostrils viewed with the head in the Frankfurt horizontal and the eyes of the observer level with the eyes of the subject. This gives the appearance of an upturned nose (upturned nasal tip).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000463","HPO_Synonym__c":"Anteverted nose; Anteverted nostrils; Nasal tip, upturned; Nostrils anteverted; Upturned nares; Upturned nasal tip; Upturned nose; Upturned nostrils","HPO_Name__c":"Anteverted nares","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Truncal ataxia is a sign of ataxia characterized by instability of the trunk. It usually occurs during sitting.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002078","HPO_Synonym__c":"Instability or lack of coordination of central trunk muscles; Trunk ataxia","HPO_Name__c":"Truncal ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Posterior positions and/or vertical shortening of the infraorbital and perialar regions, or increased concavity of the face and/or reduced nasolabial angle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011800","HPO_Synonym__c":"Decreased size of midface; Flat midface; Hypoplasia of midface; Midface deficiency; Midface hypoplasia; Midface retrusion; Midface, flat; Retrusive midface; Underdevelopment of midface","HPO_Name__c":"Midface retrusion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","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":"OMIM:617101","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A failure to achieve the ability to walk at an appropriate developmental stage. Most children learn to walk in a series of stages, and learn to walk short distances independently between 12 and 15 months.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0031936","HPO_Synonym__c":"Delayed walking","HPO_Name__c":"Delayed ability to walk","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004611","HPO_Synonym__c":"Anteriorly concave vertebrae","HPO_Name__c":"Anterior concavity of thoracic vertebrae","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","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":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Self-aggression.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100716","HPO_Synonym__c":"Autoagression; Self injury; Self-harm; Self-injurious behavior; Self-injurious behaviors","HPO_Name__c":"Self-injurious behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hemoglobin F (HbF) contains two globin alpha chains and two globin gamma chains. It is the main form of hemoglobin in the fetus during the last seven months of intrauterine development and in the half year of postnatal life. In adults it normally makes up less than one percent of all hemoglobin. This term refers to an increase in HbF above this limit. In beta thalassemia major, it may represent over 90 percent of all hemoglobin, and in beta thalassemia minor it may make up between 0.5 to 4 percent.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011904","HPO_Synonym__c":"Increased hemoglobin F; Persistence of HbF","HPO_Name__c":"Persistence of hemoglobin F","Feature_System__c":"Blood and Blood-Forming Tissue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Height of the vermilion of the upper lip in the midline more than 2 SD below the mean. Alternatively, an apparently reduced height of the vermilion of the upper lip in the frontal view (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000219","HPO_Synonym__c":"Decreased height of upper lip vermilion; Decreased volume of upper lip; Decreased volume of upper lip vermilion; Thin upper lip; Thin vermilion border of upper lip","HPO_Name__c":"Thin upper lip vermilion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A kind of ataxia that affects movements of the extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002070","HPO_Synonym__c":"Appendicular ataxia","HPO_Name__c":"Limb ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of repetitive behavior in which the affected individual repeatedly waves the hands and/or arms rhythmically.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100023","HPO_Name__c":"Recurrent hand flapping","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality in which the mandible is mislocalised posteriorly.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000278","HPO_Synonym__c":"Lower jaw retrognathia; Lower jaw retrusion; Mandibular retrognathia; Mandibular retrusion; Receding chin; Receding lower jaw; Receding mandible; Retrognathia of lower jaw; Retrusion of lower jaw; Weak chin; Weak jaw","HPO_Name__c":"Retrognathia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal pattern in the quality, quantity, or characteristics of sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002360","HPO_Synonym__c":"Difficulty sleeping; Sleep abnormality; Sleep disturbances; Sleep dysfunction; Sleep-wake disturbance; Trouble sleeping","HPO_Name__c":"Sleep disturbance","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","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":"OMIM:617101","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal bluish coloration of the sclera.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000592","HPO_Synonym__c":"Blue sclera; Bluish sclerae; Gray sclerae; Whites of eyes are a bluish-gray color","HPO_Name__c":"Blue sclerae","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Wasting (atrophy) of the vermis of cerebellum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006855","HPO_Synonym__c":"Atrophy of cerebellar vermis; Atrophy of the cerebellar vermis; Vermian atrophy","HPO_Name__c":"Cerebellar vermis atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal configuration of the lower lip such that it is turned outward i.e., everted, with the Inner aspect of the lower lip vermilion (normally opposing the teeth) being visible in a frontal view.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000232","HPO_Synonym__c":"Drooping lower lip; Eclabium of lower lip; Everted lower lip; Everted prominent lower lip; Outward turned lower lip","HPO_Name__c":"Everted lower lip vermilion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","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":"OMIM:617101","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":"OMIM:617101","HPO_Frequency__c":"Frequent (30-79%)","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":"OMIM:617101","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005274","HPO_Synonym__c":"Large nasal tip; Large tip of nose; Prominent nasal tip; Prominent tip of nose; Pronounced nasal tip; Pronounced tip of nose","HPO_Name__c":"Prominent nasal tip","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","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":"OMIM:617101","HPO_Frequency__c":"Very frequent (80-99%)","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":"OMIM:617101","Feature__r":{"HPO_Description__c":"Laterally protruding ear that lacks antihelical folding (including absence of inferior and superior crura).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000378","HPO_Synonym__c":"Cup-shaped ears; Cupped ear; Simple, cup-shaped ears","HPO_Name__c":"Cupped ear","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","Feature__r":{"HPO_Description__c":"A condition in which the helix is folded over to a greater degree than normal. That is, excessive curling of the helix edge, whereby the free edge is parallel to the plane of the ear.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000396","HPO_Synonym__c":"Over-folded helices; Overfolded ears; Overfolded helices","HPO_Name__c":"Overfolded helix","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","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":"OMIM:617101","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal gait pattern in which persons stand and walk with their feet spaced widely apart. This is often a component of cerebellar ataxia.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002136","HPO_Synonym__c":"Broad based gait; Wide based gait; Wide based walk; Wide-based gait","HPO_Name__c":"Broad-based gait","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:617101","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Head circumference below 2 standard deviations below the mean for age and sex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000252","HPO_Synonym__c":"Abnormally small cranium; Abnormally small skull; Decreased circumference of cranium; Decreased size of cranium; Decreased size of skull; Reduced head circumference; small cranium; Small head circumference","HPO_Name__c":"Microcephaly","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology","Hematology","Congenital Abnormality"],"Specialist":["Genetics","Neurology","Hematology","Neurodevelopmental disabilities","Pediatrics"]},"synonyms":["dias-logan syndrome"]}