Phenotypes
Db Link Name Definition Comment Is a
HPO HP:0000175 Cleft palate "Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate)." [HPO:probinson] Cleft palate is a developmental defect that occurs between the 7th and 12th week of pregnancy. Normally, the palatine processes fuse during this time to form the soft and hard palate. A failure of fusion results in a cleft palate. The clinical spectrum ranges from bifid uvula, to (incomplete or complete) cleft of the soft palate, up to (complete or incomplete) cleft of both the soft and hard palate. HP:0000202, HP:0100737
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:0001511 Intrauterine growth retardation "An abnormal restriction of fetal growth with fetal weight below the tenth percentile for gestational age." [HPO:probinson] Intrauterine growth restriction is a newer term that is preferred over Intrauterine growth retardation. The causes of IUGR include maternal abnormalities (chronic hypertension, cyanotic heart disease, smoking, drug abuse), placental or umbilical cord abnormalities (including placenta previa and cord anomalies), maternal medicationas, and genetic disorders of the fetus. HP:0001510
HPO HP:0000486 Strabismus "A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error." [HPO:probinson, PMID:26319345, UManchester:psergouniotis] HP:0000549
HPO HP:0006709 Aplasia/Hypoplasia of the nipples HP:0004404
HPO HP:0000077 Abnormality of the kidney "An abnormality of the kidney." [HPO:probinson] The kidney is a paired organ whose primary function is the production of urine. HP:0010935
HPO HP:0000612 Iris coloboma "A coloboma of the iris." [HPO:probinson, PMID:19369671] HP:0000525, HP:0000589
HPO HP:0002714 Downturned corners of mouth "A morphological abnormality of the mouth in which the angle of the mouth is downturned. The oral commissures are positioned inferior to the midline labial fissure." [HPO:probinson, PMID:19125428] This finding should be assessed with the mouth closed, the lips in relaxed contact, and the face relaxed. The finding may be difficult to assess if the lower lip is enlarged. Previous terms for downturned corners of mouth included Carp mouth andFish mouth which are no longer recommended (pejorative terms). HP:0011338
HPO HP:0000389 Chronic otitis media "Chronic otitis media refers to fluid, swelling, or infection of the middle ear that does not heal and may cause permanent damage to the ear." [HPO:probinson] HP:0000388
HPO HP:0001252 Hypotonia "Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist." [HPO:probinson, PMID:21418198] Hypotonia can be caused by abnormalities of the central nervous system, any element of the motor unit (including the lower motoneuron), or both. Hypotonia is not a specific diagnosis, but can be observed in hundreds of genetic and other diseases. The first distinction to make when assessing a child with hypotonia is whether decreased muscle tone is a result of an abnormality of the central nervous system (CNS), peripheral neuromuscular system, or a combined abnormality involving both. Clinical findings suggestive of an abnormality of the CNS may include hyperreflexia, cognitive developmental delay, and seizures. In contrast, physical findings pointing towards a neuromuscular origin may include weakness, lack of antigravity movements, muscle atrophy, fasciculations, and/or diminished reflexes, most often in the context of normal cognitive function. The HPO term does not distinguish between these etiologies. Additional HPO terms should be used as required to describe associated features. HP:0003808
HPO HP:0003363 Abdominal situs inversus "A left-right reversal (or \"mirror reflection\") of the anatomical location of the viscera of the abdomen." [HPO:probinson] HP:0011620
HPO HP:0000776 Congenital diaphragmatic hernia "The presence of a hernia of the diaphragm present at birth." [HPO:probinson] Diaphragmatic hernia is the result of a developmental defect causing an abnormal opening in the diaphragm, through which abdominal organs (stomach, spleen, liver, and intestines) can protrude into the thoracic cavity. This usually causes respiratory distress in the newborn period. HP:0000775, HP:0100790
HPO HP:0002750 Delayed skeletal maturation "A decreased rate of skeletal maturation. Delayed skeletal maturation can be diagnosed on the basis of an estimation of the bone age from radiographs of specific bones in the human body." [HPO:curators] HP:0000927
HPO HP:0001362 Calvarial skull defect "A localized defect in the bone of the skull resulting from abnormal embryological development. The defect is covered by normal skin. In some cases, skull x-rays have shown underlying lytic bone lesions which have closed before the age of one year." [HPO:probinson] HP:0002648
HPO HP:0000960 Sacral dimple "A cutaneous indentation resulting from tethering of the skin to underlying structures (bone) of the intergluteal cleft." [HPO:probinson, PMID:28245993] HP:0010767, HP:0010781
HPO HP:0002007 Frontal bossing "Bilateral bulging of the lateral frontal bone prominences with relative sparing of the midline." [PMID:19125436] This is not the same as prominent forehead. HP:0000290, HP:0011218
HPO HP:0001171 Split hand "A condition in which middle parts of the hand (fingers and metacarpals) are missing giving a cleft appearance. The severity is very variable ranging from slightly hypoplastic middle fingers over absent middel fingers as far as oligo- or monodactyl hands." [HPO:sdoelken] HP:0001155, HP:0100257
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:0000028 Cryptorchidism "Testis in inguinal canal. That is, absence of one or both testes from the scrotum owing to failure of the testis or testes to descend through the inguinal canal to the scrotum." [HPO:probinson, PMID:23650202] The gonad is mobile and can be retracted superiorly by the cremaster muscle reflex stimulated, for instance, by cold or touch. A retracted testis is not cryptorchidism. An abdominal testis cannot be distinguished by physical examination from an (Apparently) absent testis and requires radiological (or, rarely, surgical) procedures for assessment. HP:0000035
HPO 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 criteria, osteoporosis is defined as a BMD that lies 2.5 standard deviations or more below the average value for young healthy adults (a T-score below -2.5 SD)." [HPO:probinson, PMID:28293453] Osteoporosis is a disease that is characterized by low bone mass, deterioration of bone tissue, and disruption of bone microarchitecture: it can lead to compromised bone strength and an increase in the risk of fractures. HP:0004349
HPO HP:0008551 Microtia "Underdevelopment of the external ear." [HPO:probinson, PMID:19152421, PMID:3270622] The definitions of microtia follow a widely used, surgically based, classification of ear anomalies outlined by Weerda 1988. As microtia indicates at least both decreased length and width, and in more severe forms it includes abnormal shape of structures, all forms are acknowledged to be bundled terms, but are retained here because they are well established. HP:0000377, HP:0008772
HPO HP:0009890 High anterior hairline "Distance between the hairline (trichion) and the glabella (the most prominent point on the frontal bone above the root of the nose), in the midline, more than two SD above the mean. Alternatively, an apparently increased distance between the hairline and the glabella." [PMID:19125436] This feature gives the appearance of a tall forehead, and may or may not include reduction of hair in the temporal areas. This can be distinguished from male pattern baldness as the hairline is the superior boundary of the muscular forehead, which can be actively wrinkled, in contrast to the scalp where no wrinkling can occur. In addition, texture of the skin of the scalp differs from the texture of the skin over the forehead. HP:0000599
HPO HP:0000268 Dolichocephaly "An abnormality of skull shape characterized by a increased anterior-posterior diameter, i.e., an increased antero-posterior dimension of the skull. Cephalic index less than 76%. Alternatively, an apparently increased antero-posterior length of the head compared to width. Often due to premature closure of the sagittal suture." [HPO:probinson, PMID:19125436] Cephalic index is the ratio of head width expressed as a percentage of head length. The normal range is 76-80.9%. Head length is measured between the glabella (the most prominent point on the frontal bone above the root of the nose) and the most prominent part of the occiput in the midline, using spreading calipers. Head width is measured between the most lateral points of the parietal bones on each side of the head, using spreading calipers. Cephalic index standards are derived from Caucasians and have limited relevance for other races and ethnicities. Current norms have limited validity because of changes in infant sleeping position and consequent changes in head shape. New data should be developed. Dolichocephaly is distinct from Prominent occiput, but both can be present in the same individual and should be coded separately. Scaphocephaly is a subtype of dolichocephaly where the anterior and posterior aspects of the cranial vault are pointed (boat-shaped). HP:0002648
HPO HP:0000204 Cleft upper lip "A gap in the upper lip. This is a congenital defect resulting from nonfusion of tissues of the lip during embryonal development." [HPO:probinson] HP:0000177, HP:0410030
HPO HP:0007360 Aplasia/Hypoplasia of the cerebellum HP:0001317, HP:0002977