From HPO
Hyperlysinuria- MedGen UID:
- 867368
- •Concept ID:
- C4021733
- •
- Finding
An increased concentration of lysine in the urine.
Fetal growth restriction- MedGen UID:
- 4693
- •Concept ID:
- C0015934
- •
- Pathologic Function
An abnormal restriction of fetal growth with fetal weight below the tenth percentile for gestational age.
Failure to thrive- MedGen UID:
- 746019
- •Concept ID:
- C2315100
- •
- Disease or Syndrome
Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.
Feeding difficulties- MedGen UID:
- 65429
- •Concept ID:
- C0232466
- •
- Finding
Impaired ability to eat related to problems gathering food and getting ready to suck, chew, or swallow it.
Poor suck- MedGen UID:
- 324693
- •Concept ID:
- C1837142
- •
- Finding
An inadequate sucking reflex, resulting in the difficult of newborns to be breast-fed.
Cerebellar ataxia- MedGen UID:
- 849
- •Concept ID:
- C0007758
- •
- Disease or Syndrome
Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).
Clonus- MedGen UID:
- 40341
- •Concept ID:
- C0009024
- •
- Sign or Symptom
A series of rhythmic and involuntary muscle contractions (at a frequency of about 5 to 7 Hz) that occur in response to an abruptly applied and sustained stretch.
Dystonic disorder- MedGen UID:
- 3940
- •Concept ID:
- C0013421
- •
- Sign or Symptom
An abnormally increased muscular tone that causes fixed abnormal postures. There is a slow, intermittent twisting motion that leads to exaggerated turning and posture of the extremities and trunk.
Hydrocephalus- MedGen UID:
- 9335
- •Concept ID:
- C0020255
- •
- Disease or Syndrome
Hydrocephalus is an active distension of the ventricular system of the brain resulting from inadequate passage of CSF from its point of production within the cerebral ventricles to its point of absorption into the systemic circulation.
Leukodystrophy- MedGen UID:
- 6070
- •Concept ID:
- C0023520
- •
- Disease or Syndrome
Leukodystrophy refers to deterioration of white matter of the brain resulting from degeneration of myelin sheaths in the CNS. Their basic defect is directly related to the synthesis and maintenance of myelin membranes. Symmetric white matter involvement at MRI is a typical finding in patients with leukodystrophies.
Spasticity- MedGen UID:
- 7753
- •Concept ID:
- C0026838
- •
- Sign or Symptom
A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.
Tetraplegia- MedGen UID:
- 19617
- •Concept ID:
- C0034372
- •
- Disease or Syndrome
Paralysis of all four limbs, and trunk of the body below the level of an associated injury to the spinal cord. The etiology of quadriplegia is similar to that of paraplegia except that the lesion is in the cervical spinal cord rather than in the thoracic or lumbar segments of the spinal cord.
Seizure- MedGen UID:
- 20693
- •Concept ID:
- C0036572
- •
- Sign or Symptom
A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.
Choreoathetosis- MedGen UID:
- 39313
- •Concept ID:
- C0085583
- •
- Disease or Syndrome
Involuntary movements characterized by both athetosis (inability to sustain muscles in a fixed position) and chorea (widespread jerky arrhythmic movements).
Encephalopathy- MedGen UID:
- 39314
- •Concept ID:
- C0085584
- •
- Disease or Syndrome
Encephalopathy is a term that means brain disease, damage, or malfunction. In general, encephalopathy is manifested by an altered mental state.
Cerebral atrophy- MedGen UID:
- 116012
- •Concept ID:
- C0235946
- •
- Disease or Syndrome
Atrophy (wasting, decrease in size of cells or tissue) affecting the cerebrum.
Hypoplasia of the corpus callosum- MedGen UID:
- 138005
- •Concept ID:
- C0344482
- •
- Congenital Abnormality
Underdevelopment of the corpus callosum.
Colpocephaly- MedGen UID:
- 98131
- •Concept ID:
- C0431384
- •
- Congenital Abnormality
Colpocephaly is an anatomic finding in the brain manifested by occipital horns that are disproportionately enlarged in comparison with other parts of the lateral ventricles.
Incoordination- MedGen UID:
- 141714
- •Concept ID:
- C0520966
- •
- Finding
Global developmental delay- MedGen UID:
- 107838
- •Concept ID:
- C0557874
- •
- Finding
A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.
Cerebellar atrophy- MedGen UID:
- 196624
- •Concept ID:
- C0740279
- •
- Disease or Syndrome
Cerebellar atrophy is defined as a cerebellum with initially normal structures, in a posterior fossa with normal size, which displays enlarged fissures (interfolial spaces) in comparison to the foliae secondary to loss of tissue. Cerebellar atrophy implies irreversible loss of tissue and result from an ongoing progressive disease until a final stage is reached or a single injury, e.g. an intoxication or infectious event.
Increased CSF lactate- MedGen UID:
- 257904
- •Concept ID:
- C1167918
- •
- Finding
Increased concentration of lactate in the cerebrospinal fluid.
Ventriculomegaly- MedGen UID:
- 480553
- •Concept ID:
- C3278923
- •
- Finding
An increase in size of the ventricular system of the brain.
Delayed CNS myelination- MedGen UID:
- 867393
- •Concept ID:
- C4021758
- •
- Anatomical Abnormality
Delayed myelination in the central nervous system.
Myoclonic absence seizure- MedGen UID:
- 869094
- •Concept ID:
- C4023512
- •
- Disease or Syndrome
Myoclonic absence seizure is a type of generalized non-motor (absence) seizure characterized by an interruption of ongoing activities, a blank stare and rhythmic three-per-second myoclonic movements, causing ratcheting abduction of the upper limbs leading to progressive arm elevation, and associated with 3 Hz generalized spike-wave discharges on the electroencephalogram. Duration is typically 10-60 s. Whilst impairment of consciousness may not be obvious the ILAE classified this seizure as a generalized non-motor seizure in 2017.
Generalized hyperreflexia- MedGen UID:
- 870502
- •Concept ID:
- C4024949
- •
- Finding
Increased CSF lysine concentration- MedGen UID:
- 1690150
- •Concept ID:
- C5139593
- •
- Finding
Abnormally increased levels of lysine in cerebrospinal fluid.
Hypotonia- MedGen UID:
- 10133
- •Concept ID:
- C0026827
- •
- Finding
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.
Poor head control- MedGen UID:
- 322809
- •Concept ID:
- C1836038
- •
- Finding
Difficulty to maintain correct position of the head while standing or sitting.
Microcephaly- MedGen UID:
- 1644158
- •Concept ID:
- C4551563
- •
- Finding
Head circumference below 2 standard deviations below the mean for age and gender.
Metabolic acidosis- MedGen UID:
- 65117
- •Concept ID:
- C0220981
- •
- Pathologic Function
Metabolic acidosis (MA) is characterized by a fall in blood pH due to a reduction of serum bicarbonate concentration. This can occur as a result of either the accumulation of acids (high anion gap MA) or the loss of bicarbonate from the gastrointestinal tract or the kidney (hyperchloremic MA). By definition, MA is not due to a respirary cause.
Hyperlysinemia- MedGen UID:
- 82816
- •Concept ID:
- C0268553
- •
- Disease or Syndrome
Hyperlysinemia type I is an autosomal recessive metabolic condition with variable clinical features. Some patients who present in infancy with nonspecific seizures, hypotonia, or mildly delayed psychomotor development have been found to have increased serum lysine and pipecolic acid on laboratory analysis. However, about 50% of probands are reported to be asymptomatic, and hyperlysinemia is generally considered to be a benign metabolic variant (summary by Tondo et al., 2013; Houten et al., 2013).
The AASS gene encodes a bifunctional enzyme: lysine alpha-ketoglutarate reductase and saccharopine dehydrogenase. In hyperlysinemia type I, both enzymatic functions of AASS are defective; in hyperlysinemia type II, also known as saccharopinuria (268700), some of the first enzymatic function is retained (Cox, 1985; Cox et al., 1986).
Increased circulating lactate concentration- MedGen UID:
- 332209
- •Concept ID:
- C1836440
- •
- Finding
Abnormally increased level of blood lactate (2-hydroxypropanoic acid). Lactate is produced from pyruvate by lactate dehydrogenase during normal metabolism. The terms lactate and lactic acid are often used interchangeably but lactate (the component measured in blood) is strictly a weak base whereas lactic acid is the corresponding acid. Lactic acidosis is often used clinically to describe elevated lactate but should be reserved for cases where there is a corresponding acidosis (pH below 7.35).
Decreased plasma free carnitine- MedGen UID:
- 863446
- •Concept ID:
- C4015009
- •
- Finding
A decreased concentration of free (unbound) carnitine in the blood.
Reduced muscle 2,4-dienoyl-CoA reductase activity- MedGen UID:
- 1841755
- •Concept ID:
- C5826767
- •
- Finding
Diminished activity of the enzyme 2,4-dienoyl-CoA reductase in muscle tissue.
Reduced liver 2,4-dienoyl-CoA reductase activity- MedGen UID:
- 1841743
- •Concept ID:
- C5826768
- •
- Finding
Diminished activity of the enzyme 2,4-dienoyl-CoA reductase in liver tissue.
Elevated circulating 2-trans,4-cis-decadienoylcarnitine concentration- MedGen UID:
- 1052862
- •Concept ID:
- CN377310
- •
- Finding
The concentration of 2-trans,4-cis-decadienoylcarnitine in the blood circulation is above the upper limit of normal.
Hypermetropia- MedGen UID:
- 43780
- •Concept ID:
- C0020490
- •
- Disease or Syndrome
An abnormality of refraction characterized by the ability to see objects in the distance clearly, while objects nearby appear blurry.
Nystagmus- MedGen UID:
- 45166
- •Concept ID:
- C0028738
- •
- Disease or Syndrome
Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.
Ophthalmoplegia- MedGen UID:
- 45205
- •Concept ID:
- C0029089
- •
- Sign or Symptom
Paralysis of one or more extraocular muscles that are responsible for eye movements.
Optic atrophy- MedGen UID:
- 18180
- •Concept ID:
- C0029124
- •
- Disease or Syndrome
Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.
Abnormality of eye movement- MedGen UID:
- 99227
- •Concept ID:
- C0497202
- •
- Finding
An abnormality in voluntary or involuntary eye movements or their control.
Cerebral visual impairment- MedGen UID:
- 890568
- •Concept ID:
- C4048268
- •
- Pathologic Function
A form of loss of vision caused by damage to the visual cortex rather than a defect in the eye.
- Abnormality of metabolism/homeostasis
- Abnormality of the digestive system
- Abnormality of the eye
- Abnormality of the genitourinary system
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Growth abnormality