| 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: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:0001155 | Abnormality of the hand | "An abnormality affecting one or both hands." [HPO:curators] |
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| HP:0001249 | Mental retardation | |
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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:0001258 | Spastic paraplegia | |
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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:0001284 | Areflexia | |
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| HP:0001290 | Generalized hypotonia | "Generalized muscular hypotonia (abnormally low muscle tone)." [HPO:curators] |
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| HP:0001317 | Abnormality of the cerebellum | |
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| HP:0001347 | Hyperreflexia | "The presence of overactive or overresponsive reflexes." [HPO:curators] |
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| HP:0001382 | Joint hypermobility | "The ability of a joint to move beyond its normal range of motion." [HPO:curators] |
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| HP:0001761 | Pes cavus | |
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| HP:0001762 | Talipes equinovarus | "Also called clubfoot typically has 4 main components: inversion and adduction of the forefoot; inversion of the heel and hindfoot; equinus (limitation of extension) of the ankle and subtalar joint; and internal rotation of the leg. Clubfoot is a complex, multifactorial deformity with genetic and intrauterine factors. One popular theory postulates that a clubfoot is a result of intrauterine maldevelopment of the talus that leads to adduction and plantarflexion of the foot. On radiographic projection a clubfoot can be noted as parallel axes of talus and calcaneus." [HPO:curators] |
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| HP:0001763 | Pes planus | "A condition in which the arch of the foot is flat, with the entire sole of the foot being in near-complete contact with the ground." [HPO:curators] |
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| HP:0002062 | Abnormality of the pyramidal tracts | "An abnormality of the pyramidal system of motor neurons, whose chief element, the corticospinal tract, is the only direct connection between the brain and the spinal cord. In addition to the corticospinal tract, the pyramidal system includes the corticobulbar, corticomesencephalic, and corticopontine tracts." [HPO:curators] |
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| HP:0002212 | Curly hair | |
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| HP:0002224 | Woolly hair | |
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| HP:0002235 | Pili canaliculi | "Uncombable hair." [HPO:probinson] |
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| HP:0002317 | Unsteady gait | |
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| HP:0002355 | Difficulty walking | |
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| HP:0002460 | Distal muscle weakness | "Reduced strength of the distal musculature." [HPO:curators] |
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| HP:0002522 | Areflexia in lower limbs | |
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| HP:0002527 | Falls | |
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| HP:0002600 | Hyporeflexia of lower limbs | |
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| HP:0002650 | Scoliosis | "The presence of an abnormal lateral curvature of the spine." [HPO:curators] |
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| HP:0002857 | Genu valgum | |
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| HP:0002936 | Distal sensory impairment | |
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| HP:0003376 | Steppage gait | "An abnormal gait pattern that arises from weakness of the pretibial and peroneal muscles due to a lower motor neuron lesion. Affected patients have footdrop and are unable to dorsiflex and evert the foot. The leg is lifted high on walking so that the toes clear the ground, and there may be a slapping noise when the foot strikes the ground again." [HPO:curators] |
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| HP:0003380 | Decreased number of myelinated fibers | "A loss of myelinated nerve fibers (in general, this finding can be observed on nerve biopsy)." [HPO:curators] |
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| HP:0003390 | Sensory axonal neuropathy | "An axonal neuropathy of peripheral sensory nerves." [HPO:curators] |
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| HP:0003405 | Diffuse axonal swelling | |
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| HP:0003429 | Hypomyelination | |
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| HP:0003487 | Babinski sign | "Upturning of the big toe (and sometimes fanning of the other toes) in response to stimulation of the sole of the foot. If the Babinski sign is present it can indicate damage to the corticospinal tract." [HPO:curators] |
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| HP:0003621 | Juvenile onset | |
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| HP:0003677 | Slow progression | |
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| HP:0003690 | Limb muscle weakness | "Weakness of the muscles of the arms and legs." [HPO:curators] |
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| HP:0003693 | Distal amyotrophy | "Muscular atrophy affecting muscles in the distal portions of the extremities." [HPO:curators] |
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| HP:0003701 | Proximal muscle weakness | "A lack of strength of the proximal muscles." [HPO:curators] |
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| HP:0003812 | Phenotypic variability | |
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| HP:0005109 | Abnormality of the Achilles tendon | |
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| HP:0005922 | Abnormal hand morphology | |
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| HP:0007002 | Sensory and motor axonal neuropathy | |
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| HP:0007256 | Mild pyramidal signs | |
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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:0012503 | Abnormality of the pituitary gland | "An anomaly of the `pituitary gland` (FMA:13889)." [HPO:probinson] |
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