| 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:0000488 | Retinopathy | |
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| HP:0000545 | Myopia | |
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| HP:0000608 | Macular degeneration | |
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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:0000682 | Abnormality of dental enamel | "An abnormality of the dental enamel, which is the external layer of the teeth, being a highly mineralized substance consisting primarily of hydroxylapatite." [HPO:curators] |
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| HP:0000958 | Dry skin | |
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| HP:0000962 | Hyperkeratosis | "Hyperkeratosis is thickening of the outer layer of the skin, the stratum corneum, which is composed of large, polyhedral, plate-like envelopes filled with keratin which are the dead cells that have migrated up from the stratum granulosum." [HPO:curators] |
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| HP:0001025 | Urticaria | |
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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: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:0001260 | Dysarthria | "Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed." [HPO:curators] |
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| HP:0001264 | Spastic diplegia | "Spasticity (neuromuscular hypertonia) primarily in the muscles of the legs, hips, and pelvis." [HPO:curators] |
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| HP:0001387 | Joint stiffness | "Joint stiffness is a perceived sensation of tightness in a joint or joints when attempting to move them after a period of inactivity. Joint stiffness typically subsides over time." [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:0002652 | Skeletal dysplasia | |
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| HP:0002808 | Kyphosis | |
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| HP:0002942 | Thoracic kyphosis | |
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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:0006297 | Hypoplastic dental enamel | |
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| HP:0007256 | Mild pyramidal signs | |
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| HP:0007305 | Cns demyelination | |
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| HP:0007440 | Generalized hyperpigmentation | |
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| HP:0007703 | Abnormal retinal pigmentation | |
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| HP:0007727 | Superficial corneal opacities | |
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| HP:0008064 | Ichthyosiform abnormality of the skin | |
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| HP:0010783 | Erythema | "Redness of the skin, caused by hyperemia of the capillaries in the lower layers of the skin." [HPO:probinson] |
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| HP:0100533 | Inflammatory abnormality of the eye | "Inflammation of the eye, parts of the eye or the periorbital region." [HPO:sdoelken] |
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| HP:0200020 | Corneal erosions | "Erosions or Abbrasions of the cornea s outermost layer of epithelial cells." [HPO:sdoelken] |
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