| 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: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:0000505 | Impaired vision | |
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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:0000648 | Optic atrophy | |
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| HP:0000736 | Short attention span | "Reduced attention span characterized by distractibility and impulsivity but not necessarily satisfying the diagnostic criteria for attention deficit hyperactivity disorder." [HPO:curators] |
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| HP:0000737 | Irritability | |
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| HP:0000952 | Jaundice | "Yellow pigmentation of the skin or sclera due to bilirubin, which in turn is the result of increased bilirubin concentration in the bloodstream." [HPO:curators] |
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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: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:0001264 | Spastic diplegia | "Spasticity (neuromuscular hypertonia) primarily in the muscles of the legs, hips, and pelvis." [HPO:curators] |
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| HP:0001288 | Gait disturbance | "The term gait disturbance can refer to any disruption of the ability to walk. In general, this can refer to neurological diseases but also fractures or other sources of pain that is triggered upon walking. However, in the current context gait disturbance refers to difficulty walking on the basis of a neurological or muscular disease." [HPO:curators] |
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| HP:0001290 | Generalized hypotonia | "Generalized muscular hypotonia (abnormally low muscle tone)." [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:0001347 | Hyperreflexia | "The presence of overactive or overresponsive reflexes." [HPO:curators] |
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| HP:0001394 | Cirrhosis | |
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| HP:0001425 | Heterogeneous | |
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| HP:0001433 | Hepatosplenomegaly | |
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| HP:0001712 | Left ventricular hypertrophy | |
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| HP:0001744 | Splenomegaly | "An abnormal enlargement of the spleen." [HPO:curators] |
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| HP:0001903 | Anemia | |
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| HP:0002079 | Hypoplasia of the corpus callosum | "Underdevelopment of the corpus callosum." [HPO:curators] |
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| HP:0002154 | Hyperglycinemia | |
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| HP:0002191 | Spasticity, progressive | |
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| HP:0002240 | Hepatomegaly | "An abnormal enlargment of the liver." [HPO:curators] |
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| HP:0002317 | Unsteady gait | |
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| HP:0002376 | Developmental regression | |
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| HP:0002415 | Leukodystrophy | |
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| HP:0002464 | Spastic dysarthria | |
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| HP:0002497 | Spastic ataxia | |
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| HP:0002908 | Conjugated hyperbilirubinemia | |
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| HP:0002910 | Elevated transaminases | "Elevations of the levels of SGOT and SGPT in the serum. SGOT (serum glutamic oxaloacetic transaminase) and SGPT (serum glutamic pyruvic transaminase) are transaminases primarily found in the liver and heart and are released into the bloodstream as the result of liver or heart damage. SGOT and SGPT are used clinically mainly as markers of liver damage." [HPO:curators] |
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| HP:0002928 | Decreased activity of the pyruvate dehydrogenase (PDH) complex | |
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| HP:0003281 | Increased serum ferritin | |
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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:0003593 | Early onset | |
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| HP:0005978 | Noninsulin-dependent diabetes mellitus | |
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| HP:0008288 | Nonketotic hyperglycinemia | |
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| HP:0008945 | Loss of ability to walk in early childhood | |
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| HP:0011273 | Anisocytosis | "Abnormally increased variability in the size of erythrocytes." [HPO:probinson] |
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| HP:0011968 | Feeding difficulties | "Impaired ability to eat related to problems gathering food and getting ready to suck, chew, or swallow it." [ISCA:eriggs] |
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| HP:0012132 | Erythroid hyperplasia | "Increased count of erythroid precursor cells, that is, `erythroid lineage cells` (CL:0000764) in the bone marrow." [DDD:akelly] |
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| HP:0012465 | Elevated hepatic iron concentration | "An increased level of iron in liver tissues." [HPO:probinson, pmid:10922422, pmid:14668426] |
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| HP:0025066 | Decreased mean corpuscular volume | "A reduction from normal of the mean corpuscular volume, or mean cell volume (MCV) of red blood cells (usually defined as an MCV below 80 femtoliters)." [] |
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| HP:0100561 | Spinal cord lesions | |
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