| HP:0000006 | Autosomal dominant 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 heterozygotes. In the context of medical genetics, an autosomal dominant disorder is caused when a single copy of the mutant allele is present. Males and females are affected equally, and can both transmit the disorder with a risk of 50% for each child of inheriting the mutant allele." [HPO:curators] |
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| HP:0000248 | Brachycephaly | "Brachycephaly refers to a short, wide head, which is often caused by premature closure of both coronal sutures." [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:0000256 | Macrocephaly | "The presence of an abnormally large `skull` (FMA:46565)." [HPO:probinson] |
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| HP:0000262 | Turricephaly | "Turricephaly is derived from the Latin word turris, meaning tall, and refers to a round, tall (tower-like) skull." [HPO:curators] |
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| HP:0000263 | Oyxcephaly | "Oxycephaly (from Greek oxus, sharp, and kephalos, head) refers to a conical or pointed shape of the skull." [HPO:curators] |
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| HP:0000270 | Delayed closure of fontanelles | "Infants normally have two fontanels at birth, the diamond-shaped anterior fontanelle at the junction of the coronal and sagittal sutures, and the posterior fontanelle at the intersection of the occipital and parietal bones. The posterior fontanelle usually closes by the 8th week of life, and the anterior fontanel closes by the 18th month of life on average. This term applies if there is delay of closure of the fontanelles beyond the normal age." [HPO:curators] |
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| HP:0000294 | Low frontal hairline | "A condition in which the scalp hair is present at lower than usual areas of the forehead." [HPO:curators] |
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| HP:0000316 | Hypertelorism | |
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| HP:0000324 | Facial asymmetry | |
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| HP:0000337 | Broad forehead | "Abnormally large side-to-side distance of the forehead." [HPO:curators] |
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| HP:0000348 | High forehead | "An abnormally increased height of the forehead." [HPO:curators] |
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| HP:0000365 | Hearing loss | |
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| HP:0000407 | Hearing loss, sensorineural | "Hearing loss caused by damage or dysfunction of the auditory nerve (cranial nerve VIII)." [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:0000508 | Ptosis | "Drooping of the eyelid." [HPO:curators] |
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| HP:0000520 | Proptosis | |
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| HP:0001085 | Papilledema | "Papilledema refers to edema (swelling) of the optic disc secondary to any factor which increases cerebral spinal fluid pressure." [HPO:curators] |
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| HP:0001123 | Visual field defects | |
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| HP:0001156 | Brachydactyly | |
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| HP:0001249 | Mental retardation | |
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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:0001272 | Cerebellar atrophy | |
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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:0001305 | Dandy-Walker malformation | "A congenital brain malformation typically characterized by incomplete formation of the cerebellar vermis, dilation of the fourth ventricle, and enlargement of the posterior fossa. In layman s terms, Dandy Walker malformation is a cyst in the cerebellum (typically symmetrical) that is involved with the fourth ventricle. This may interfere with the body s ability to drain cerebrospinal fluid from the brain, resulting in hydrocephalus. Dandy Walker cysts are formed during early embryonic development, while the brain forms. The cyst in the cerebellum typically has several blood vessels running through it connecting to the brain, thereby prohibiting surgical removal." [HPO:curators] |
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| HP:0001357 | Plagiocephaly | "An asymmetric head shape often resulting from premature closure of only one of the coronal sutures." [HPO:curators] |
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| HP:0001363 | Craniosynostosis | "Craniosynostosis refers to the premature closure of the cranial sutures. Primary craniosynostosis refers to the closure of one or more sutures due to abnormalities in skull development, and secondary craniosynostosis results from failure of brain growth." [HPO:curators] |
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| HP:0002007 | Frontal bossing | "The presence of an unusually prominent forehead." [HPO:curators] |
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| HP:0002308 | Arnold-Chiari malformation | "Arnold-Chiari malformation consists of a downward displacement of the cerebellar tonsils and the medulla through the foramen magnum, sometimes causing hydrocephalus as a result of obstruction of CSF outflow." [HPO:curators] |
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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:0002516 | Increased intracranial pressure | |
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| HP:0002650 | Scoliosis | "The presence of an abnormal lateral curvature of the spine." [HPO:curators] |
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| HP:0003298 | Spina bifida occulta | "The closed form of spina bifida." [HPO:curators] |
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| HP:0004440 | Coronal craniosynostosis | |
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| HP:0004442 | Sagittal craniosynostosis | |
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| HP:0004443 | Lambdoidal craniosynostosis | |
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| HP:0009701 | Synostosis involving the metacarpal bones | "Fusion involving two or more metacarpal bones (A synostosis of the first metacarpal and the proximal phalanx of the thumb can also be observed, note that the first metacarpal bone corresponds to a proximal phalanx)." [HPO:curators] |
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| HP:0009891 | Hypoplasia of the supraorbital ridges | "Underdevelopment of the supraorbital ridges." [HPO:curators] |
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| HP:0010864 | Mental retardation, severe | "Moderate mental retardation is defined as an intelligence quotient (IQ) in the range of 20-34." [HPO:probinson] |
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| HP:0011800 | Midface retrusion | "Posterior positions and/or vertical shortening of the infraorbital and perialar regions, or increased concavity of the face and/or reduced nasolabial angle." [DDD:jclayton-smith] |
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