| 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: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:0000365 | Hearing loss | |
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| HP:0000400 | Large ears | |
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| HP:0000613 | Photophobia | "Excessive sensitivity to light with the sensation of discomfort or pain in the eyes due to exposure to bright light." [HPO:curators] |
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| HP:0000815 | Hypergonadotropic hypogonadism | "Reduced function of the gonads (testes in males or ovaries in females) associated with excess pituitary gonadotropin secretion and resulting in delayed sexual development and growth delay." [HPO:curators] |
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| HP:0001156 | Brachydactyly | |
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| HP:0001171 | Ectrodactyly (hands) | |
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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:0001252 | Muscular hypotonia | "Muscular hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle), often involving reduced muscle strength. Hypotonia is characterized by a diminished resistance to passive stretching." [HPO:curators] |
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| HP:0001371 | Contractures | |
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| HP:0001596 | Alopecia | "Loss of hair from the head or body." [HPO:curators] |
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| HP:0002209 | Sparse scalp hair | "Sparseness of the `head hair` (FMA:54241)." [HPO:probinson] |
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| HP:0002231 | Sparse body hair | "Sparseness of the body hair." [HPO:probinson] |
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| HP:0002289 | Alopecia, complete | |
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| HP:0002353 | EEG abnormalities | "Abnormality observed by electroencephalogram (EEG), which is used to record of the brain s spontaneous electrical activity from multiple electrodes placed on the scalp." [HPO:curators] |
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| HP:0002650 | Scoliosis | "The presence of an abnormal lateral curvature of the spine." [HPO:curators] |
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| HP:0002750 | Delayed skeletal maturation | "A decreased rate of skeletal maturation. Delayed skeletal maturation can be diagnosed on the basis of an estimation of the bone age from radiographs of specific bones in the human body." [HPO:curators] |
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| HP:0004322 | Decreased body height | "A height below that which is expected according to age and gender 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 gender (or below the 3rd percentile for age and gender dependent norms)." [HPO:curators] |
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| HP:0005105 | Abnormal nasal morphology | |
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| HP:0006887 | Mental retardation, progressive | "Mental retardation is defined as a decreased intelligence quotient of varying degree. The term progressive mental retardation should be used if intelligence decreases/deteriorates over time." [HPO:curators] |
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| HP:0008064 | Ichthyosiform abnormality of the skin | |
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| HP:0010864 | Mental retardation, severe | "Moderate mental retardation is defined as an intelligence quotient (IQ) in the range of 20-34." [HPO:probinson] |
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| HP:0100840 | Aplasia/Hypoplasia of the eyebrow | "Absence or underdevelopment of the eyebrow." [HPO:probinson] |
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| HP:0200012 | Short corpus callosum | |
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