Phenotypes
Db Link Name Definition Comment Is a
HPO HP:0000275 Narrow face "Bizygomatic (upper face) and bigonial (lower face) width are both more than 2 standard deviations below the mean (objective); or, an apparent reduction in the width of the upper and lower face (subjective)." [PMID:19125436] Objective measurement of the upper facial width is made with spreading calipers. The tips of the calipers are passed over the zygomatic arches until the maximum width is determined. Objective measurement of the lower faces is made with spreading calipers, with the tips firmly pressed against the inferomedial surface of the angle of the mandible. HP:0000274
HPO HP:0000319 Smooth philtrum "Flat skin surface, with no ridge formation in the central region of the upper lip between the nasal base and upper vermilion border." [PMID:19152422] There is a spectrum of this finding from total absence of the philtral ridges to a some prominence of the ridges. The central groove varies from absent to shallow. Normal values for the frequency of smooth philtrum are available. Grading of the smoothness of the philtrum, used in the assessment of Fetal Alcohol Syndrome, has been developed. This finding is greatly influenced by the facial expression, and care should be taken to evaluate the philtrum when the face is in a neutral position. A smooth philtrum can be associated with a Long philtrum. However, the two findings should be coded separately. HP:0000288
HPO HP:0001328 Specific learning disability "Impairment of certain skills such as reading or writing, coordination, self-control, or attention that interfere with the ability to learn. The impairment is not related to a global deficiency of intelligence." [HPO:probinson] The term learning disability is used with different meanings in different contexts. Significant impairments of mental functioning with a reduction in IQ below 70 should be coded as mental retardation. HP:0012759
HPO HP:0001510 Growth delay "A deficiency or slowing down of growth pre- and postnatally." [HPO:probinson] Poor or abnormally slow gains in weight or height in a child. HP:0001507
HPO HP:0000286 Epicanthus "A fold of skin starting above the medial aspect of the upper eyelid and arching downward to cover, pass in front of and lateral to the medial canthus." [HPO:probinson] In extreme cases, the skin fold can start as high as the eyebrow; this is called epicanthus superciliaris. HP:0000492
HPO HP:0000276 Long face "Facial height (length) is more than 2 standard deviations above the mean (objective); or, an apparent increase in the height (length) of the face (subjective)." [PMID:19125436] Objective measurement of the face height is made with sliding calipers from the nasion, just above the depth of the nasal root, to the gnathion, the inferior border of the mandible, both in the midline. Note that long face is distinct from narrow face. HP:0100729
HPO HP:0000582 Upslanted palpebral fissure "The palpebral fissure inclination is more than two standard deviations above the mean for age (objective); or, the inclination of the palpebral fissure is greater than typical for age." [PMID:19125427] HP:0200006
HPO HP:0001139 Choroideremia HP:0000610
HPO HP:0012745 Short palpebral fissure "Distance between the medial and lateral canthi is more than 2 SD below the mean for age (objective); or, apparently reduced length of the palpebral fissures." [PMID:19125427] HP:0200007
HPO HP:0005469 Flat occiput "Reduced convexity of the occiput (posterior part of skull)." [PMID:19125436] Reduced convexity of the occiput gives an appearance of flattening. There are no objective measures for convexity of the occiput, and evaluation depends heavily on the experience of the observer. This finding may or may not be accompanied by Brachycephaly (which should be coded separately), and may be observed more frequently when an infant is placed to sleep on his/her back. Occipital plagiocephaly can result from fusion or sclerosis of the lambdoid suture. If unilateral, this is accompanied by unilateral occipital flattening and bulging of the ispilateral frontal bone. HP:0011217
HPO HP:0011968 Feeding difficulties "Impaired ability to eat related to problems gathering food and getting ready to suck, chew, or swallow it." [ISCA:eriggs] HP:0011458
HPO HP:0001249 Intellectual disability "Subnormal intellectual functioning which originates during the developmental period. Intellectual disability, previously referred to as mental retardation, has been defined as an IQ score below 70." [HPO:probinson] This term should be used for children at least five years old. For younger children, consider the term Global developmental delay (HP:0001263). HP:0011446, HP:0012759
HPO HP:0000384 Preauricular skin tag "A rudimentary tag of skin often containing ear tissue including a core of cartilage and located just anterior to the auricle (outer part of the ear)." [HPO:probinson] HP:0000383, HP:0010609
HPO HP:0002223 Absent eyebrow "Absence of the eyebrow." [HPO:probinson] HP:0002298, HP:0100840
HPO HP:0000347 Micrognathia "Developmental hypoplasia of the mandible." [HPO:probinson] Mandibular hypoplasia, also known as micrognathia, is a term that describes an abnormally small lower jaw. HP:0009118
HPO HP:0001508 Failure to thrive "Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm." [HPO:probinson] Although there is no clear consensus on the exact definition of FTT, it is usually diagnoses in a child growing below the 3rd percentile or in a child whose decreased growth has cross two major growth percentiles (for example, from above the 75th percentile to below the 25th percentile). HP:0004325
HPO HP:0000963 Thin skin "Reduction in thickness of the skin, generally associated with a loss of suppleness and elasticity of the skin." [HPO:probinson] HP:0008065
HPO HP:0002643 Neonatal respiratory distress "Respiratory difficulty as newborn." [HPO:probinson] HP:0002093
HPO HP:0001629 Ventricular septal defect "A hole between the two bottom chambers (ventricles) of the heart. The defect is centered around the most superior aspect of the ventricular septum." [HPO:probinson, PMID:33327983] HP:0010438
HPO HP:0000276 Long face "Facial height (length) is more than 2 standard deviations above the mean (objective); or, an apparent increase in the height (length) of the face (subjective)." [PMID:19125436] Objective measurement of the face height is made with sliding calipers from the nasion, just above the depth of the nasal root, to the gnathion, the inferior border of the mandible, both in the midline. Note that long face is distinct from narrow face. HP:0100729
HPO HP:0001344 Absent speech "Complete lack of development of speech and language abilities." [HPO:probinson] This term should not be used in very young children. HP:0000750
HPO HP:0000059 Hypoplastic labia majora "Undergrowth of the outer labia." [HPO:probinson] HP:0000066, HP:0012881
HPO HP:0003146 Hypocholesterolemia "An decreased concentration of cholesterol in the blood." [HPO:gcarletti] HP:0003107
HPO HP:0000582 Upslanted palpebral fissure "The palpebral fissure inclination is more than two standard deviations above the mean for age (objective); or, the inclination of the palpebral fissure is greater than typical for age." [PMID:19125427] HP:0200006
HPO HP:0002566 Intestinal malrotation "An abnormality of the intestinal rotation and fixation that normally occurs during the development of the gut. This can lead to volvulus, or twisting of the intestine that causes obstruction and necrosis." [HPO:probinson, PMID:12438031] HP:0002242