HP:0000007 | Autosomal recessive 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 homozygotes. In the context of medical genetics, autosomal recessive disorders manifest in homozygotes (with two copies of the mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele)." [HPO:curators] |
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HP:0000238 | Hydrocephalus | |
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HP:0000256 | Macrocephaly | "The presence of an abnormally large `skull` (FMA:46565)." [HPO:probinson] |
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HP:0000365 | Hearing loss | |
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HP:0000518 | Cataract | "A cataract is an opacity or clouding that develops in the crystalline `lens` (FMA:58241) of the eye or in its `capsule` (FMA:58881)." [HPO:probinson] |
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HP:0000648 | Optic atrophy | |
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HP:0001249 | Mental retardation | |
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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:0001258 | Spastic paraplegia | |
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HP:0001290 | Generalized hypotonia | "Generalized muscular hypotonia (abnormally low muscle tone)." [HPO:curators] |
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HP:0001321 | Cerebellar hypoplasia | |
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HP:0002085 | Occipital encephalocele | |
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HP:0002132 | Porencephaly | |
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HP:0002281 | Gray matter heterotopias | "Gray matter heterotopia is a neurological disorder caused by clumps of grey matter being located in the wrong part of the brain. It is characterized as a type of cortical dysplasia. The neurons in heterotopia appear to be normal, except for their mislocation; nuclear studies have shown glucose metabolism equal to that of normally positioned gray matter. The condition causes a variety of symptoms, but usually includes some degree of epilepsy or recurring seizures, and often affects the brain s ability to function on higher levels. Symptoms range from nonexistent to profound, in which case heterotopia can result in severe seizure disorder, loss of motor skills, and mental retardation." [HPO:curators] |
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HP:0002352 | Leukoencephalopathy | |
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HP:0002365 | Hypoplasia of the brainstem | |
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HP:0002500 | Abnormality of the cerebral white matter | |
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HP:0003676 | Progressive disorder | |
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HP:0003828 | Variable expressivity | |
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HP:0007260 | Type II lissencephaly | |
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HP:0011344 | Severe global developmental delay | "A severe delay in the achievement of motor or mental milestones in the domains of development of a child." [DDD:hvfirth] |
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