| 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:0000716 | Depression | "A condition characterized by pervasive dysphoric mood, loss of interests, and inability to experience pleasure." [HPO:curators] |
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| HP:0000726 | Dementia | |
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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: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:0001272 | Cerebellar atrophy | |
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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:0001337 | Tremor | "An unintentional, oscillating to-and-fro muscle movement." [HPO:curators] |
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| HP:0001508 | Failure to thrive | |
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| HP:0001522 | Death in infancy | |
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| HP:0001639 | Hypertrophic cardiomyopathy | |
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| HP:0002089 | Pulmonary hypoplasia | |
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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:0002180 | Neurodegeneration | |
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| HP:0002186 | Apraxia | "A defect in the understanding of complex motor commands and in the execution of certain learned movements, i.e., deficits in the cognitive components of learned movements." [HPO:curators] |
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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:0002371 | Loss of speech | |
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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:0003324 | Generalized muscle weakness | "Generalized weakness or decreased strength of the muscles." [HPO:curators] |
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| HP:0003676 | Progressive disorder | |
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| HP:0006970 | Periventricular leukomalacia | |
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| HP:0006980 | Leukoencephalopathy, progressive | |
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| HP:0008209 | Premature ovarian failure | |
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