{"Name":"Cockayne syndrome type 1","DiseaseID__c":"GARD:0001415","id":1415,"encodedName":"cockayne-syndrome-type-1","IsDeleted":false,"Disease_Name_Full__c":"Cockayne syndrome type 1","Xref_IDs__c":"890433006; C0751039; C135725; DOID:0080907; MEDGEN:155488; MONDO:0019569; OMIM:216400; ORPHA:90321","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":9,"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":8,"No_of_Age_at_Onset__c":3,"Description_Source__c":"MONDO:0019569","Disease_Description__c":"Cockayne syndrome caused by mutation(s) in the ERCC8 gene, encoding DNA excision repair protein ERCC-8.","GARD_Name__c":"Cockayne syndrome type 1","GARD_Synonym__c":"classical cockayne syndrome; cockayne syndrome  type i; cockayne syndrome a; cockayne syndrome caused by mutation in ercc8; cockayne syndrome classic form; cockayne syndrome classical; cockayne syndrome type a; cockayne syndrome type i; cockayne syndrome, type a; ercc8 cockayne syndrome; ercc8-related cockayne syndrome","Curated_Disease_Description_Source__c":"GARD:0001415","Curated_Disease_Description__c":"Cockayne syndrome is a rare disease which causes short stature, premature aging (progeria), severe photosensitivity, and moderate to severe learning delay. This syndrome also includes failure to thrive in the newborn, very small head (microcephaly), and impaired nervous system development. Other symptoms may include hearing loss, tooth decay, vision problems, and bone abnormalities. Inheritance is autosomal recessive. Those with type 3 live into middle adulthood.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"during Pregnancy, at Birth, and as an Infant","SourceID__c":"ORPHA:90321","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0019569","ORPHANET_ID__c":"ORPHA:90321","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de cockayne tipo 1","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"síndrome de cockayne tipo 1","Spanish_GARD_Synonym__c":"síndrome de cockayne tipo i","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":"Cockayne syndrome is a rare disease which causes short stature, premature aging (progeria), severe photosensitivity, and moderate to severe learning delay. This syndrome also includes failure to thrive in the newborn, very small head (microcephaly), and impaired nervous system development. Other symptoms may include hearing loss, tooth decay, vision problems, and bone abnormalities. Inheritance is autosomal recessive. Those with type 3 live into middle adulthood.","Curated_Disease_Description_Source__c":"GARD:0001415","GARD_Synonym__c":"classical cockayne syndrome; cockayne syndrome  type i; cockayne syndrome a; cockayne syndrome caused by mutation in ercc8; cockayne syndrome classic form; cockayne syndrome classical; cockayne syndrome type a; cockayne syndrome type i; cockayne syndrome, type a; ercc8 cockayne syndrome; ercc8-related cockayne syndrome","Name":"Cockayne syndrome type 1","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Cockayne Syndrome Foundation","Website__c":"https://www.cockaynesyndromefoundation.org/"},{"Account_Name__c":"Share & Care Cockayne Syndrome Network Inc.","Website__c":"http://cockaynesyndrome.org/"},{"Account_Name__c":"Amy and Friends Cockayne Syndrome (CS) and Trichothiodystrophy (TTD) Support","Website__c":"https://www.amyandfriends.org"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Cancer - Oncologist","Tag_Category__c":"Specialist"},{"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":"Ophthalmology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Dermatology","Tag_Category__c":"Account;Disease Category;Specialist","category_description":"Skin diseases, or integumentary system diseases, affect the skin, hair, nails, sweat glands, or oil glands.","curated_tag_name":"Skin 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":"Otolaryngology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Retinal","Tag_Category__c":"Account;Specialist","curated_tag_name":"Retinal disorders"},{"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":"Infancy","Provided_By__c":"ORPHA:90321"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:90321"},{"Age_At_Onset__c":"Antenatal","Provided_By__c":"ORPHA:90321"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C0751039"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0001415","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1342","Source__c":"Gene Review","Xref__c":"NBK1342"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0080907","Source__c":"MONDO:0019569","Xref__c":"DOID:0080907"},{"URL__c":"https://www.omim.org/entry/216400","Source__c":"C0751039; MONDO:0019569","Xref__c":"OMIM:216400"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C135725","Source__c":"C0751039; MONDO:0019569","Xref__c":"C135725"},{"URL__c":"https://www.orpha.net/en/disease/detail/90321","Source__c":"C0751039; MONDO:0019569; ORPHA:90321","Xref__c":"ORPHA:90321"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=155488","Source__c":"C0751039","Xref__c":"MEDGEN:155488"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0751039","Source__c":"C0751039","Xref__c":"C0751039"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=890433006","Source__c":"C0751039","Xref__c":"890433006"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0019569","Source__c":"GARD:0001415","Xref__c":"MONDO:0019569"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"ERCC8","GHR_URL__c":"https://medlineplus.gov/genetics/gene/ercc8","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The term gait disturbance can refer to any disruption of the ability to walk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001288","HPO_Synonym__c":"Abnormal gait; Abnormal walk; Difficulty in walking; Gait abnormalities; Gait difficulties; Gait disturbances; Impaired gait; Walking disability","HPO_Name__c":"Gait disturbance","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The presence of calcium deposition affecting one or more structures of the basal ganglia.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002135","HPO_Synonym__c":"Basal ganglia calcifications; Basal ganglion calcification; Calcification of the basal ganglia","HPO_Name__c":"Basal ganglia calcification","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","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"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The absence of all teeth from the normal series by a failure to develop.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000674","HPO_Synonym__c":"Anodontia vera; Complete agenesis of all teeth; Complete dental agenesis; Failure of development of all teeth","HPO_Name__c":"Anodontia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000639","HPO_Synonym__c":"Involuntary, rapid, rhythmic eye movements","HPO_Name__c":"Nystagmus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction in erythrocytes volume or hemoglobin concentration.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001903","HPO_Synonym__c":"Anaemia; Low number of red blood cells or hemoglobin","HPO_Name__c":"Anemia","Feature_System__c":"Blood and Blood-Forming Tissue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A degree of wrinkling of the facial skin that is more than expected for the age of the individual, leading to a prematurely aged appearance.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005328","HPO_Synonym__c":"Aged facial appearance; Premature aged appearance; Prematurely aged face; Prematurely aged facial appearance; Wizened face","HPO_Name__c":"Progeroid facial appearance","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of an abnormal lateral curvature of the spine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002650","HPO_Name__c":"Scoliosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Decreased vertical distance from the vermilion border of the lower lip to the inferior-most point of the chin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000331","HPO_Synonym__c":"Decreased height of chin; Short chin; Short lower third of face; Vertical deficiency of chin; Vertical hypoplasia of chin","HPO_Name__c":"Short chin","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Inflammation of one or all portions of the uveal tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000554","HPO_Name__c":"Uveitis","Feature_System__c":"Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001508","HPO_Synonym__c":"Faltering weight; FTT; Postnatal failure to thrive; Weight faltering","HPO_Name__c":"Failure to thrive","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A hyperpigmented circumscribed area of change in normal skin color without elevation or depression of any size.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001034","HPO_Synonym__c":"Hyperpigmented macules; Hyperpigmented spots","HPO_Name__c":"Hypermelanotic macule","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Uncommon (<1-4%)","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:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Excessive sensitivity to light with the sensation of discomfort or pain in the eyes due to exposure to bright light.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000613","HPO_Synonym__c":"Extreme sensitivity of the eyes to light; Light hypersensitivity; Photodysphoria","HPO_Name__c":"Photophobia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of chronic increased pressure in the systemic arterial system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000822","HPO_Synonym__c":"Arterial hypertension; Systemic hypertension","HPO_Name__c":"Hypertension","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An increased sensitivity of the skin to light. Photosensitivity may result in a rash upon exposure to the sun (which is known as photodermatosis). Photosensitivity can be diagnosed by phototests in which light is shone on small areas of skin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000992","HPO_Synonym__c":"Photosensitive skin; Photosensitive skin rashes; Photosensitivity; Sensitivity to sunlight; Skin photosensitivity; Sun sensitivity","HPO_Name__c":"Cutaneous photosensitivity","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally increased frequency (usually defined as three or more) loose or watery bowel movements a day.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002014","HPO_Synonym__c":"Diarrhea; Watery stool","HPO_Name__c":"Diarrhea","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An eye that is more deeply recessed into the plane of the face than is typical.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000490","HPO_Synonym__c":"Deep set eye; Deep-set eyes; Deeply set eye; Enophthalmos; Ocular depression; Sunken eye; Sunken eyes","HPO_Name__c":"Deeply set eye","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Delayed tooth eruption affecting the primary dentition.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000680","HPO_Synonym__c":"Delayed eruption of baby teeth; Delayed eruption of deciduous teeth; Delayed eruption of milk teeth; Delayed primary teeth eruption; Late eruption of baby teeth; Late eruption of milk teeth; Late eruption of primary teeth","HPO_Name__c":"Delayed eruption of primary teeth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally decreased lacrimation, that is, reduced tear production.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000633","HPO_Synonym__c":"Decreased tear secretion; Hypolacrimia","HPO_Name__c":"Decreased lacrimation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","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:90321","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:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An unintentional, oscillating to-and-fro muscle movement about a joint axis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001337","HPO_Synonym__c":"Tremor; Tremors","HPO_Name__c":"Tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Absence of the globe or eyeball.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000528","HPO_Synonym__c":"Absence of eyeballs; Absence of globes of eyes; Anophthalmia, clinical; Clinical anophthalmia, unilateral/bilateral; Failure of development of eyeball; Missing eyeball; Missing globe of eye; No eyeball; No globe of eye; Ocular absence","HPO_Name__c":"Anophthalmia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An increased amount of nitrogen in the form of urea in the blood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003138","HPO_Synonym__c":"Increased blood urea nitrogen; Increased BUN","HPO_Name__c":"Increased blood urea nitrogen","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the conduction of electrical impulses by peripheral (motor or sensory) nerves. This finding is elicited by a nerve conduction study (NCS).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003134","HPO_Synonym__c":"Sensory and motor nerve conduction abnormalities","HPO_Name__c":"Abnormality of peripheral nerve conduction","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_NCV"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:90321","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:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A tendency to fall or the inability to keep oneself from falling; imbalance. The retropulsion test is widely regarded as the gold standard to evaluate postural instability, Use of the retropulsion test includes a rapid balance perturbation in the backward direction, and the number of balance correcting steps (or total absence thereof) is used to rate the degree of postural instability. Healthy subjects correct such perturbations with either one or two large steps, or without taking any steps, hinging rapidly at the hips while swinging the arms forward as a counterweight. In patients with balance impairment, balance correcting steps are often too small, forcing patients to take more than two steps. Taking three or more steps is generally considered to be abnormal, and taking more than five steps is regarded as being clearly abnormal. Markedly affected patients continue to step backward without ever regaining their balance and must be caught by the examiner (this would be called true retropulsion). Even more severely affected patients fail to correct entirely, and fall backward like a pushed toy soldier, without taking any corrective steps.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002172","HPO_Synonym__c":"Balance impairment","HPO_Name__c":"Postural instability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Facial height (length) is more than 2 standard deviations above the mean (objective); or, an apparent increase in the height (length) of the face (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000276","HPO_Synonym__c":"Elongation of face; Increased height of face; Increased length of face; Increased vertical dimension of face; Long face; Long facies; Vertical elongation of face; Vertical enlargement of face; Vertical excess of face; Vertical Facial Excess; Vertical hyperplasia of face; Vertical overgrowth of face","HPO_Name__c":"Long face","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","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:90321","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Decreased functionality of the male gonad, i.e., of the testis, with reduced spermatogenesis or testosterone synthesis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000026","HPO_Synonym__c":"Decreased function of male gonad","HPO_Name__c":"Male hypogonadism","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of temperature homeostasis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004370","HPO_Synonym__c":"Abnormality of temperature regulation; Impaired temperature control; Impaired temperature regulation; Inability to control temperature; Inability to regulate temperature; Poor control of temperature; Poor regulation of temperature; Poor temperature control; Poor temperature regulation; Unable to control temperature","HPO_Name__c":"Abnormality of temperature regulation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction in the level of performance of the kidneys in areas of function comprising the concentration of urine, removal of wastes, the maintenance of electrolyte balance, homeostasis of blood pressure, and calcium metabolism.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000083","HPO_Synonym__c":"Renal failure; Renal failure in adulthood","HPO_Name__c":"Renal insufficiency","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","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:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Spasticity (velocity-dependent increase in tonic stretch reflexes with increased muscle tone and hyperexcitable tendon reflexes) in the muscles of the lower limbs, hips, and pelvis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002061","HPO_Synonym__c":"Lower extremities spasticity; Lower extremity spasticity; Spastic lower extremities; Spastic lower extremity; Spastic lower limb; Spastic lower limbs; Spasticity in lower extremities; Spasticity in lower extremity; Spasticity in lower limb; Spasticity in lower limbs; Spasticity of lower extremities; Spasticity of lower extremity; Spasticity of lower limb; Spasticity of lower limbs","HPO_Name__c":"Lower limb spasticity","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Lack of measurable response to stimulation of auditory evoked potentials.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004463","HPO_Synonym__c":"No auditory brainstem response","HPO_Name__c":"Absent brainstem auditory responses","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A scar refers to a lesion in which wound, burn, or sore has not healed completely and fibrous connective tissue has developed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100699","HPO_Synonym__c":"Scarring","HPO_Name__c":"Scarring","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000505","HPO_Synonym__c":"Impaired vision; Loss of eyesight; Poor vision; Visual impairment","HPO_Name__c":"Visual impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","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:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Developmental hypoplasia of the primary teeth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006334","HPO_Synonym__c":"Decreased size of baby teeth; Decreased size of deciduous teeth; Decreased size of milk teeth; Decreased size of primary teeth; Hypoplastic deciduous teeth; Small baby teeth; Small milk teeth; Small primary teeth; Underdevelopment of baby teeth; Underdevelopment of milk teeth; Underdevelopment of primary teeth","HPO_Name__c":"Hypoplasia of the primary teeth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","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:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Developmental hypoplasia of the dental enamel.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006297","HPO_Synonym__c":"Dental enamel hypoplasia; Enamel hypotrophy; Enamel, underdeveloped; Hypoplasia of dental enamel; Hypoplasia of tooth enamel; Underdeveloped teeth enamel","HPO_Name__c":"Enamel hypoplasia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001347","HPO_Synonym__c":"Increased deep tendon reflexes; Increased reflexes","HPO_Name__c":"Hyperreflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Median longitudinal ear length greater than two standard deviations above the mean and median ear width greater than two standard deviations above the mean (objective); or, apparent increase in length and width of the pinna (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000400","HPO_Synonym__c":"Large ears; Large pinnae","HPO_Name__c":"Macrotia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally diminished capacity to sweat.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000966","HPO_Synonym__c":"Decreased ability to sweat; Decreased sweating; Impaired sweating; Inadequate sweating; Oligohidrosis; Sweating, decreased","HPO_Name__c":"Hypohidrosis","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Inflammation of the conjunctiva.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000509","HPO_Synonym__c":"Pink eye","HPO_Name__c":"Conjunctivitis","Feature_System__c":"Cardiovascular System; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Elevations of the levels of SGOT and SGPT in the serum. SGOT (serum glutamic oxaloacetic transaminase) and SGPT (serum glutamic pyruvic transaminase) are transaminases primarily found in the liver and heart and are released into the bloodstream as the result of liver or heart damage. SGOT and SGPT are used clinically mainly as markers of liver damage.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002910","HPO_Synonym__c":"Abnormal liver enzymes; Abnormal liver function; Abnormal liver function tests; Elevated circulating hepatic transaminase activity; Elevated liver enzymes; Elevated serum transaminases; Elevated transaminases; High liver enzymes; Increased liver enzymes; Increased liver function tests; Increased transaminases; Raised liver enzymes; Subclinical abnormal liver function tests","HPO_Name__c":"Elevated circulating hepatic transaminase concentration","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased space between the primary teeth. Note this phenotype should be distinguished from increased space due purely to microdontia.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006313","HPO_Synonym__c":"Generalized spacing of primary teeth; Wide gaps between baby teeth; Wide gaps between primary teeth; Widely spaced baby teeth; Widely spaced deciduous teeth; Widely spaced milk teeth","HPO_Name__c":"Widely spaced primary teeth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000648","HPO_Synonym__c":"Optic nerve atrophy; Optic-nerve degeneration","HPO_Name__c":"Optic atrophy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Increased levels of protein in the urine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000093","HPO_Synonym__c":"High urine protein levels; Protein in urine","HPO_Name__c":"Proteinuria","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","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:90321","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Contractures of one or more joints of the feet meaning chronic loss of joint motion due to structural changes in non-bony tissue.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008366","HPO_Synonym__c":"Contractures involving the joints of the feet; Contractures of the foot joints; Joint contractures involving the joints of the feet","HPO_Name__c":"Foot joint contracture","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Ataxia refers to impaired coordination of voluntary muscle movement. Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001251","HPO_Synonym__c":"Cerebellar ataxia","HPO_Name__c":"Ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormally increased size of the liver.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002240","HPO_Synonym__c":"Enlarged liver","HPO_Name__c":"Hepatomegaly","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the retina characterized by pigment deposition. It is typically associated with migration and proliferation of macrophages or retinal pigment epithelial cells into the retina; melanin from these cells causes the pigmentary changes. Pigmentary retinopathy is a common final pathway of many retinal conditions and is often associated with visual loss.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000580","HPO_Synonym__c":"Pigmentary retinal deposits; Retinal pigment clumping; Retinal pigmentary clumping; Retinal pigmentary degeneration","HPO_Name__c":"Pigmentary retinopathy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:90321","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal prominence of the chin related to increased length of the mandible.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000303","HPO_Synonym__c":"Big lower jaw; Big mandible; Enlarged mandible; Enlargement of mandible; Hyperplasia of lower jaw; Increased projection of lower jaw; Increased projection of mandible; Increased size of lower jaw; Large lower jaw; Large mandible; Lower jaw excess; Lower jaw hyperplasia; Macromandible; Mandible prognathism; Mandibular excess; Mandibular hyperplasia; Mandibular macrognathia; Mandibular prognathism; Prognathia; Prognathism; Prominent chin; Prominent jaw; Prominent lower jaw; Prominent mandible; Relative mandibular prognathism","HPO_Name__c":"Mandibular prognathia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Specialist":["Cancer - Oncologist","Genetics","Neurology","Ophthalmology","Dermatology","Otolaryngology","Retinal","Neurodevelopmental disabilities","Pediatrics"],"Cause":["Genetics"],"Disease Category":["Genetics","Neurology","Dermatology","Congenital Abnormality"],"Account":["Dermatology","Retinal"]},"synonyms":["classical cockayne syndrome"," cockayne syndrome  type i"," cockayne syndrome a"," cockayne syndrome caused by mutation in ercc8"," cockayne syndrome classic form"," cockayne syndrome classical"," cockayne syndrome type a"," cockayne syndrome type i"," cockayne syndrome, type a"," ercc8 cockayne syndrome"," ercc8-related cockayne syndrome"]}