| 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:0000365 | Hearing loss | |
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| HP:0000486 | Strabismus | "Strabismus (also known as squint) is a condition in which the eyes are not properly aligned with each other." [HPO:curators] |
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| HP:0000771 | Gynecomastia | |
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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:0001251 | Ataxia | "Ataxia is a nonspecific neurological sign and symptom consisting of gross lack of coordination of muscle movements. Ataxia is caused by dysfunction of one or more parts of the nervous system including the cerebellum, the sensory nervous system, the vestibular system, or the cerebral cortex." [HPO:curators] |
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| HP:0001263 | Developmental retardation | "A delay in the achievement of motor or mental milestones manifested prior to age 18 and generally associated with lifelong mental and/or physical impairments." [HPO:curators] |
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| HP:0001272 | Cerebellar atrophy | |
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| HP:0001290 | Generalized hypotonia | "Generalized muscular hypotonia (abnormally low muscle tone)." [HPO:curators] |
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| HP:0001332 | Dystonia | "An abnormally increased muscular tone that causes fixed abnormal postures. There is a slow, intermittent twisting motion that leads to exaggerated turning and posture of the extremities and trunk." [HPO:curators] |
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| HP:0001336 | Myoclonus | "Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements." [HPO:curators] |
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| HP:0001337 | Tremor | "An unintentional, oscillating to-and-fro muscle movement." [HPO:curators] |
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| HP:0001347 | Hyperreflexia | "The presence of overactive or overresponsive reflexes." [HPO:curators] |
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| HP:0001348 | Brisk reflexes | |
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| HP:0001761 | Pes cavus | |
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| HP:0002073 | Progressive cerebellar ataxia | |
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| HP:0002151 | Increased serum lactate | "Abnormally increased level of blood lactate (2-hydroxypropanoic acid). Lactate is produced from pyruvate by lactate dehydrogenase during normal metabolism." [HPO:curators] |
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| HP:0002342 | Mental retardation, moderate | "Moderate mental retardation is defined as an intelligence quotient (IQ) in the range of 35-49." [HPO:curators] |
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| HP:0002376 | Developmental regression | |
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| HP:0002490 | Increased CSF lactate | "Increased concentration of lactate in the cerebrospinal fluid." [HPO:curators] |
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| HP:0003128 | Lactic acidemia | "An abnormal buildup of `lactic acid` (CHEBI:28358) in the body, leading to `acidification` (GO:0045851) of the blood." [HPO:probinson] |
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| HP:0003457 | Abnormal EMG findings | "Abnormal results of investigations using electromyography (EMG)." [HPO:curators] |
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| HP:0003546 | Exercise intolerance | |
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| HP:0003701 | Proximal muscle weakness | "A lack of strength of the proximal muscles." [HPO:curators] |
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| HP:0003828 | Variable expressivity | |
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| HP:0004696 | talipes cavus equinovarus | |
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| HP:0007256 | Mild pyramidal signs | |
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| HP:0011398 | Central hypotonia | "Reduced muscle tone secondary to an abnormality of the central nervous system." [DDD:fmuntoni] |
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| HP:0012240 | Increased intramyocellular lipid droplets | "An abnormal increase in intracellular lipid droplets In a muscle. The number and size of these drops can increase with somd disorders of lipid metabolism affecting muscle. See pmid 20691590 for histological images." [HPO:probinson, pmid:20691590] |
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| HP:0012752 | Focal T2 hypointense basal ganglia lesion | "A darker than expected T2 signal on magnetic resonance imaging (MRI) of the basal ganglia. This term refers to a localized hypointensity affecting a particular region of the basal ganglia." [HPO:probinson] |
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| HP:0012758 | Neurodevelopmental delay | |
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