| 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:0000194 | Open mouth | |
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| HP:0000219 | Thin upper lip | |
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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:0000286 | Epicanthus | "An epicanthal fold is a semilunar fold of skin that extends from the upper eyelid across the medial canthal area to the lower eyelid." [HPO:curators] |
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| HP:0000297 | Facial hypotonia | |
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| HP:0000319 | Flat philtrum | |
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| HP:0000322 | Short philtrum | |
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| HP:0000325 | Triangular facies | |
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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:0000358 | Posteriorly rotated ears | "A type of `abnormal location of the ears` (HP:0000357) in which the position of the ears is characterized by posterior rotation (the superior part of the ears is rotated towards the back of the head, and the inferior part of the ears towards the front)." [HPO:probinson] |
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| HP:0000369 | Low-set ears | "Low-set ears are defined to be set below an arbitrary line drawn between the lateral canthus of the eye and the occipital protruberance." [HPO:curators] |
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| HP:0000414 | Bulbous nose | |
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| HP:0000426 | Prominent nasal bridge | |
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| HP:0000448 | Prominent nose | |
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| HP:0000463 | Nares, anteverted | "Anteriorly-facing nostrils viewed with the head in the Frankfurt horizontal and the eyes of the observer level with the eyes of the subject." [pmid:19152422] |
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| HP:0000470 | Short neck | |
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| HP:0000494 | Downward slanting palpebral fissures | |
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| HP:0000508 | Ptosis | "Drooping of the eyelid." [HPO:curators] |
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| HP:0000565 | Esotropia | |
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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:0000938 | Osteopenia | "Osteopenia refers to a reduction in bone mineral density (BMD) below normal peak BMD but not low enough to be classified as osteoporosis. According to the WHO, osteopenia is characterized by a value of BMD more than 1 standard deviation below the young adult mean, but less than 2 standard deviations below this value." [HPO:curators] |
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| HP:0001182 | Tapered fingers | |
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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: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:0001290 | Generalized hypotonia | "Generalized muscular hypotonia (abnormally low muscle tone)." [HPO:curators] |
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| HP:0001344 | Absent speech development | |
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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:0001511 | Intrauterine growth retardation | |
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| HP:0001531 | Failure to thrive in infancy | |
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| HP:0002007 | Frontal bossing | "The presence of an unusually prominent forehead." [HPO:curators] |
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| HP:0002019 | Constipation | |
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| HP:0002059 | Cerebral atrophy | |
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| HP:0002079 | Hypoplasia of the corpus callosum | "Underdevelopment of the corpus callosum." [HPO:curators] |
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| HP:0002187 | Mental retardation, profound | "Severe mental retardation is defined as an intelligence quotient (IQ) below 20." [HPO:curators] |
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| HP:0002283 | Diffuse brain atrophy | |
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| HP:0002650 | Scoliosis | "The presence of an abnormal lateral curvature of the spine." [HPO:curators] |
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| HP:0003273 | Hip contractures | |
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| HP:0004326 | Cachexia | |
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| HP:0007069 | Profound static encephalopathy | |
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| HP:0011220 | Prominent forehead | "Forward prominence of the entire forehead, due to protrusion of the frontal bone." [pmid:19125436] |
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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:0012389 | Appendicular hypotonia | "Muscular hypotonia of one or more limbs." [HPO:probinson] |
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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:0100660 | Dyskinesis | "A movement disorder which consists of effects including diminished voluntary movements and the presence of involuntary movements." [HPO:sdoelken] |
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