| HP:0000006 | Autosomal dominant inheritance | "A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in heterozygotes. In the context of medical genetics, an autosomal dominant disorder is caused when a single copy of the mutant allele is present. Males and females are affected equally, and can both transmit the disorder with a risk of 50% for each child of inheriting the mutant allele." [HPO:curators] |
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| HP:0000252 | Microcephaly | "Microcephaly is a neurodevelopmental disorder in which the circumference of the head is more than two standard deviations smaller than the age- and gender-dependent norm." [HPO:curators] |
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| HP:0000486 | Strabismus | "Strabismus (also known as squint) is a condition in which the eyes are not properly aligned with each other." [HPO:curators] |
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| HP:0000508 | Ptosis | "Drooping of the eyelid." [HPO:curators] |
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| HP:0000577 | Exotropia | |
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| HP:0000639 | Nystagmus | "Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms." [HPO:curators] |
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| HP:0000646 | Amblyopia | "Reduced visual acuity that is uncorrectable by lenses in the absence of detectable anatomic defects in the eye or visual pathways. Ambylopia can result from visual deprivation during the critical period of development of visual abilities which lasts to about the age of 8 years. Thus, ambylopia can result from strabismus, anisometropia, or high hypermetropia in there is a failure to form a focused image in one or both eyes." [HPO:curators] |
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| HP:0001239 | Wrist contractures | |
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| HP:0001250 | Seizures | "Seizures are an intermittent `abnormality of the central nervous system` (FMA:HP:0002011) due to a sudden, excessive, disorderly discharge of cerebral neurons and characterized clinically by some combination of disturbance of sensation, loss of consciousness, impairment of psychic function, or convulsive movements." [HPO:probinson] |
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| HP:0001257 | Spasticity | "A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes." [HPO:curators] |
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| HP:0001263 | Developmental retardation | "A delay in the achievement of motor or mental milestones manifested prior to age 18 and generally associated with lifelong mental and/or physical impairments." [HPO:curators] |
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| HP:0001274 | Agenesis of corpus callosum | "Absence of the corpus callosum as a result of the failure of the corpus callosum to develop, which can be the result of a failure in any one of the multiple steps of callosal development including cellular proliferation and migration, axonal growth or glial patterning at the midline." [HPO:curators] |
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| HP:0001328 | Learning disability | |
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| HP:0001339 | Lissencephaly | "A congenital absence of the convolutions of the cerebral cortex and a poorly formed sylvian fissure." [HPO:curators] |
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| HP:0001477 | Compensatory chin elevation | |
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| HP:0001491 | Congenital fibrosis of extraocular muscles | |
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| HP:0002079 | Hypoplasia of the corpus callosum | "Underdevelopment of the corpus callosum." [HPO:curators] |
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| HP:0002126 | Polymicrogyria | "A congenital abnormality of the cerebral hemisphere characterized by an excessive number of small gyri (convolutions) on the surface of the brain." [HPO:curators] |
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| HP:0002342 | Mental retardation, moderate | "Moderate mental retardation is defined as an intelligence quotient (IQ) in the range of 35-49." [HPO:curators] |
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| HP:0002365 | Hypoplasia of the brainstem | |
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| HP:0002539 | Cortical dysplasia | |
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| HP:0003477 | Axonal neuropathy | |
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| HP:0003577 | Onset at birth | |
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| HP:0003812 | Phenotypic variability | |
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| HP:0003828 | Variable expressivity | |
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| HP:0007831 | Nonprogressive restrictive ophthalmoplegia | |
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| HP:0008936 | Muscular hypotonia of the trunk | "Muscular hypotonia (abnormally low muscle tone) affecting the musculature of the trunk." [HPO:curators] |
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| HP:0009473 | Joint contractures involving the joints of the hand | |
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| HP:0010628 | Facial muscle weakness | "A weakness of any or all of the muscles of the face of any etiology." [HPO:curators] |
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| HP:0012241 | Levator palpebrae superioris atrophy | "Atrophy of the `levator palpebrae superioris` (FMA:49041), the extraocular muscle that elevates the superior eyelid." [HPO:probinson] |
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| HP:0012242 | Superior rectus atrophy | "Atrophy of the `superior rectus` (FMA:49035), the extraocular muscle whose primary function is to elevate the globe." [HPO:probinson] |
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| HP:0100490 | Camptodactyly (hands) | "Contractures of one ore more joints of the fingers." [HPO:sdoelken] |
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