| 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:0000737 | Irritability | |
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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:0001254 | Lethargy | |
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| HP:0001259 | Coma | |
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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:0001395 | Hepatic fibrosis | |
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| HP:0001508 | Failure to thrive | |
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| HP:0001950 | Respiratory alkalosis | |
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| HP:0001951 | Episodic ammonia intoxication | |
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| HP:0001987 | Hyperammonemia | |
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| HP:0002013 | Vomiting | |
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| HP:0002038 | Protein avoidance | |
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| HP:0002181 | Cerebral edema | "Abnormal accumulation of fluid in the brain." [HPO:curators] |
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| HP:0002240 | Hepatomegaly | "An abnormal enlargment of the liver." [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:0003217 | High plasma glutamine | |
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| HP:0003218 | Oroticaciduria | |
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| HP:0003355 | Abnormal urinary amino-acid findings | |
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| HP:0003623 | Onset in neonatal period | |
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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:0005961 | Arginine deficiency | |
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| HP:0008872 | Feeding problems in infancy | |
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| HP:0009886 | Trichorrhexis nodosa | "Trichorrhexis nodosa is the formation of nodes along the hair shaft through which breakage readily occurs. It is thus a focal defect in the hair fiber that is characterized by thickening or weak points (nodes) that cause the hair to break off easily. The result is defective, abnormally fragile hair." [HPO:curators] |
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| HP:0011359 | Dry hair | "Hair that lacks the lustre (shine or gleam) of normal hair." [DDD:cmoss] |
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| HP:0011362 | Abnormal hair quantity | "An abnormal amount of hair." [DDD:cmoss] |
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