National Center for Advancing and Translational Sciences Genetic and Rare Diseases Information Center, a program of the National Center for Advancing and Translational Sciences

RNAse T2-deficient leukoencephalopathy



Other Names:
CLWM; Leukoencephalopathy, cystic, without megalencephaly; Cystic leukoencephalopathy without megalencephaly
Categories:

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.
orphanet

Orpha Number: 85136

Definition
Cystic leukoencephalopathy without megalencephaly is characterised by non-progressive leukoencephalopathy, bilateral cysts in the anterior part of the temporal lobe, cerebral white matter anomalies and severe psychomotor impairment. Less than 50 patients have been described in the literature so far. Inheritance is most likely autosomal recessive.

Visit the Orphanet disease page for more resources.
Last updated: 3/1/2007

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

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Medical Terms Other Names
Learn More:
HPO ID
5%-29% of people have these symptoms
Abnormal CNS myelination 0011400
Ataxia 0001251
Athetosis
Involuntary writhing movements in fingers, hands, toes, and feet
0002305
Cerebral calcification
Abnormal deposits of calcium in the brain
0002514
Delayed speech and language development
Deficiency of speech development
Delayed language development
Delayed speech
Delayed speech acquisition
Delayed speech development
Impaired speech and language development
Impaired speech development
Language delay
Language delayed
Language development deficit
Late-onset speech development
Poor language development
Speech and language delay
Speech and language difficulties
Speech delay
[ more ]
0000750
Doll-like facies
Doll-like facial appearance
0000295
Dystonia 0001332
Infantile onset
Onset in first year of life
Onset in infancy
[ more ]
0003593
Leukoencephalopathy 0002352
Microcephaly
Abnormally small skull
Decreased circumference of cranium
Decreased size of skull
Reduced head circumference
Small head circumference
[ more ]
0000252
Nystagmus
Involuntary, rapid, rhythmic eye movements
0000639
Seizure 0001250
Sensorineural hearing impairment 0000407
Severe global developmental delay 0011344
Spasticity
Involuntary muscle stiffness, contraction, or spasm
0001257
Ventriculomegaly 0002119
Percent of people who have these symptoms is not available through HPO
Autosomal recessive inheritance 0000007
Focal white matter lesions 0007042
Poor speech 0002465
Slow progression
Signs and symptoms worsen slowly with time
0003677
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Last updated: 7/1/2020

If you need medical advice, you can look for doctors or other healthcare professionals who have experience with this disease. You may find these specialists through advocacy organizations, clinical trials, or articles published in medical journals. You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments.

If you can’t find a specialist in your local area, try contacting national or international specialists. They may be able to refer you to someone they know through conferences or research efforts. Some specialists may be willing to consult with you or your local doctors over the phone or by email if you can't travel to them for care.

You can find more tips in our guide, How to Find a Disease Specialist. We also encourage you to explore the rest of this page to find resources that can help you find specialists.

Healthcare Resources


These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

  • Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.

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