| 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: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: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:0000426 | Prominent nasal bridge | |
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| HP:0000453 | Choanal atresia | "Absence or abnormal closure of the choana (the posterior nasal aperture)." [HPO:curators] |
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| HP:0000518 | Cataract | "A cataract is an opacity or clouding that develops in the crystalline `lens` (FMA:58241) of the eye or in its `capsule` (FMA:58881)." [HPO:probinson] |
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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:0001272 | Cerebellar atrophy | |
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| HP:0001317 | Abnormality of the cerebellum | |
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| HP:0001511 | Intrauterine growth retardation | |
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| HP:0001518 | Low birth weight | |
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| HP:0002059 | Cerebral atrophy | |
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| HP:0002119 | Ventriculomegaly | |
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| HP:0002171 | Gliosis | |
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| HP:0002472 | Small cerebral cortex | |
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| HP:0002804 | Arthrogryposis multiplex congenita | |
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| HP:0003577 | Onset at birth | |
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| HP:0009879 | Cortical gyral simplification | "An abnormal reduction of the number and complexity of the pattern of gyrations of the cerebral cortex." [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:0012444 | Brain atrophy | "Partial or complete wasting (loss) of brain tissue that was once present." [HPO:probinson] |
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| HP:0012448 | Delayed myelination | "`Delayed` (PATO:0000502) `myelination` (GO:0042552)." [ORCID:0000-0001-5208-3432] |
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| HP:0012736 | Profound global developmental delay | "A profound delay in the achievement of motor or mental milestones in the domains of development of a child." [DDD:hvfirth] |
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| HP:0012757 | Abnormal neuron morphology | "A structural anomaly of a neuron." [KI:phemming] |
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