| 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:0000657 | Oculomotor apraxia | |
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| HP:0000664 | Synophrys | "Fusion of the left and right `eyebrow` (FMA:54237)." [HPO:probinson] |
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| HP:0000666 | Nystagmus, horizontal | |
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| HP:0000750 | Impaired language development | |
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| HP:0001249 | Mental retardation | |
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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: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:0001274 | Agenesis of corpus callosum | "Absence of the corpus callosum as a result of the failure of the corpus callosum to develop, which can be the result of a failure in any one of the multiple steps of callosal development including cellular proliferation and migration, axonal growth or glial patterning at the midline." [HPO:curators] |
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| HP:0001290 | Generalized hypotonia | "Generalized muscular hypotonia (abnormally low muscle tone)." [HPO:curators] |
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| HP:0001310 | Dysmetria | |
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| HP:0001320 | Cerebellar vermis hypoplasia | |
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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:0001350 | Slurred speech | |
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| HP:0002066 | Gait ataxia | "Impairment of the ability to coordinate the movements required for normal walking." [HPO:curators] |
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| HP:0002078 | Truncal ataxia | |
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| HP:0002080 | Intention tremor | "An oscillatory cerebellar ataxia that tends to be absent when the limbs are inactive and during the first part of voluntary movement but worsening as the movement continues and greater precision is required (e.g., in touching a target such as the patient s nose or a physician s finger)." [HPO:curators] |
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| HP:0002312 | Clumsiness | |
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| HP:0002317 | Unsteady gait | |
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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:0002359 | Frequent falls | |
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| HP:0002470 | Cerebellar ataxia, nonprogressive | |
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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:0003677 | Slow progression | |
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| HP:0003680 | Nonprogressive disorder | |
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| HP:0008947 | Infantile muscular hypotonia | "Muscular hypotonia (abnormally low muscle tone) manifesting in infancy." [HPO:curators] |
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| HP:0009617 | Abnormality of the distal phalanx of the thumb | |
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| HP:0031435 | Monotonic speech | "A speech pattern characterized by abnormally reduced or lacking variability of the pitch of the voice." [] |
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| HP:0040196 | Mild microcephaly | "Decreased occipito-frontal (head) circumference (OFC). For the microcephaly OFC must be between -3 SD and -2 SD compared to appropriate, age matched, normal standards (i.e. -3 SD <= OFC < -2 SD)." [] |
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