| 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:0000185 | Cleft soft palate | "Cleft of the soft palate (also known as the velum, or muscular palate) as a result of a developmental defect occurring between the 7th and 12th week of pregnancy. Cleft soft palate can cause functional abnormalities of the Eustachian tube with resulting middle ear anomalies and hearing difficulties, as well as speech problems associated with hypernasal speech due to velopharyngeal insufficiency." [HPO:curators] |
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| HP:0000252 | Microcephaly | "Microcephaly is a neurodevelopmental disorder in which the circumference of the head is more than two standard deviations smaller than the age- and gender-dependent norm." [HPO:curators] |
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| HP:0000253 | Microcephaly, progressive | "Progressive microcephaly is diagnosed when the head circumference falls progressively behind age- and gender-dependent norms." [HPO:curators] |
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| HP:0000340 | Sloping forehead | "A form of the forehead that slopes from top to bottom in an anterior direction." [HPO:curators] |
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| HP:0000347 | Mandibular hypoplasia | "Underdevelopment of the mandible." [HPO:curators] |
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| HP:0000648 | Optic atrophy | |
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| HP:0000737 | Irritability | |
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| HP:0000939 | Osteoporosis | "Osteoporosis is a systemic skeletal disease characterized by low bone density and microarchitectural deterioration of bone tissue with a consequent increase in bone fragility. According to the WHO, osteoporosis is characterized by a value of BMD 2.5 standard deviations or more below the young adult mean." [HPO:curators] |
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| HP:0001252 | Muscular hypotonia | "Muscular hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle), often involving reduced muscle strength. Hypotonia is characterized by a diminished resistance to passive stretching." [HPO:curators] |
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| HP:0001254 | Lethargy | |
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| HP:0001265 | Hyporeflexia | |
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| HP:0001271 | Polyneuropathy | "A generalized disorder of peripheral nerves." [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:0001320 | Cerebellar vermis hypoplasia | |
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| HP:0001321 | Cerebellar hypoplasia | |
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| HP:0001324 | Muscle weakness | "Reduced strength of muscles." [HPO:curators] |
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| HP:0001338 | Partial agenesis of the corpus callosum | "A partial failure of the development of the corpus callosum." [HPO:curators] |
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| HP:0001339 | Lissencephaly | "A congenital absence of the convolutions of the cerebral cortex and a poorly formed sylvian fissure." [HPO:curators] |
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| HP:0001371 | Contractures | |
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| HP:0001376 | Decreased mobility of joints | |
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| HP:0001522 | Death in infancy | |
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| HP:0001558 | Decreased fetal movement | "An abnormal reduction in quantity or strength of fetal movements." [HPO:curators] |
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| HP:0001762 | Talipes equinovarus | "Also called clubfoot typically has 4 main components: inversion and adduction of the forefoot; inversion of the heel and hindfoot; equinus (limitation of extension) of the ankle and subtalar joint; and internal rotation of the leg. Clubfoot is a complex, multifactorial deformity with genetic and intrauterine factors. One popular theory postulates that a clubfoot is a result of intrauterine maldevelopment of the talus that leads to adduction and plantarflexion of the foot. On radiographic projection a clubfoot can be noted as parallel axes of talus and calcaneus." [HPO:curators] |
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| HP:0001942 | Metabolic acidosis | |
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| HP:0001992 | Organic aciduria | |
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| HP:0002069 | Generalized tonic-clonic seizures | "Generalized tonic-clonic seizures are `generalized seizures` (HP:0002197) in which the patient suddenly loses conciousness, the eyes roll back, and the entire body musculature undergoes tonic contractions. In the clonic phase of the seizure, there are rhythmic contractions of the musculature alternating with relaxation of all muscle groups. Loss of sphincter control during the seizure is common. This form of seizure was formerly commonly called grand mal seizure." [HPO:curators] |
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| HP:0002119 | Ventriculomegaly | |
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| HP:0002240 | Hepatomegaly | "An abnormal enlargment of the liver." [HPO:curators] |
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| HP:0002355 | Difficulty walking | |
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| HP:0002414 | Spina bifida | "Incomplete closure of the embryonic neural tube, whereby some vertebral arches remain unfused and open." [HPO:curators] |
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| HP:0002490 | Increased CSF lactate | "Increased concentration of lactate in the cerebrospinal fluid." [HPO:curators] |
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| HP:0002509 | Limb hypertonia | |
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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:0003202 | Amyotrophy | "The presence of muscular atrophy (which is also known as amyotrophy)." [HPO:curators] |
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| HP:0003470 | Paralysis | "Paralysis of voluntary muscles means loss of contraction due to interruption of one or more motor pathways from the brain to the muscle fibers. Although the word paralysis is often used interchangeably to mean either complete or partial loss of muscle strength, it is preferable to use paralysis or plegia for complete or severe loss of muscle strength, and paresis for partial or slight loss. Motor paralysis results from deficits of the upper motor neurons (corticospinal, corticobulbar, or subcorticospinal). Motor paralysis is often accompanied by an impairment in the facility of movement." [HPO:curators] |
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| HP:0003477 | Axonal neuropathy | |
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| HP:0003577 | Onset at birth | |
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| HP:0004331 | Decreased skull ossification | "A reduction in the magnitude or amount of ossification of the skull." [HPO:curators] |
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| HP:0005750 | Contractures of lower limbs | |
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| HP:0005968 | Temperature instability | "Disordered thermoregulation characterized by an impaired ability to maintain a balance between heat production and heat loss, with resulting instability of body temperature." [HPO:curators] |
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| HP:0008936 | Muscular hypotonia of the trunk | "Muscular hypotonia (abnormally low muscle tone) affecting the musculature of the trunk." [HPO:curators] |
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| HP:0011344 | Severe global developmental delay | "A severe delay in the achievement of motor or mental milestones in the domains of development of a child." [DDD:hvfirth] |
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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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