| 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: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:0000764 | Axonal degeneration | |
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| HP:0001171 | Ectrodactyly (hands) | |
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| HP:0001178 | Claw hand deformities (in severe cases) | |
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| HP:0001265 | Hyporeflexia | |
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| HP:0001270 | Motor retardation | |
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| HP:0001284 | Areflexia | |
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| HP:0001371 | Contractures | |
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| HP:0001425 | Heterogeneous | |
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| HP:0001604 | Vocal cord paresis | |
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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:0001765 | Hammer toes | |
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| HP:0002460 | Distal muscle weakness | "Reduced strength of the distal musculature." [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:0002751 | Kyphoscoliosis | |
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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:0003378 | Axonal degeneration/regeneration on nerve biopsy | |
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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:0003382 | Hypertrophic nerve changes | |
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| HP:0003383 | Onion bulb formations on nerve biopsy | |
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| HP:0003387 | Loss of large myelinated fibers | |
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| HP:0003400 | Basal lamina onion bulb formations on nerve biopsy | |
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| HP:0003429 | Hypomyelination | |
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| HP:0003431 | Decreased motor nerve conduction velocity (NCV) | |
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| HP:0003445 | EMG shows neuropathic changes | |
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| HP:0003450 | Axonal regeneration on nerve biopsy | |
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| HP:0003593 | Early onset | |
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| HP:0003623 | Onset in neonatal period | |
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| HP:0003678 | Rapidly progressive | |
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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:0006915 | Inability to walk by childhood/adolescence | |
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| HP:0007182 | Hypomyelination on nerve biopsy | |
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| HP:0008443 | Spinal deformities | |
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| HP:0009027 | Foot dorsiflexor weakness | |
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| HP:0009830 | Peripheral neuropathy | "Peripheral neuropathy is a general term for any disorder of the peripheral nervous system. The main clinical features used to classify peripheral neuropathy are distribution, type (mainly demyelinating versus mainly axonal), duration, and course." [HPO:curators] |
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| HP:0011096 | Peripheral demyelination | "A loss of myelin from the internode regions along myelinated nerve fibers of the peripheral nervous system." [HPO:probinson] |
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| HP:0011463 | Childhood onset | "Onset of disease at the age of between 1 and 5 years." [DDD:hfirth] |
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