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

Megaloblastic anemia due to dihydrofolate reductase deficiency



Other Names:
DHFR deficiency; Constitutional megaloblastic anemia with severe neurologic disease; Dihydrofolate reductase deficiency
Categories:

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
Percent of people who have these symptoms is not available through HPO
Ataxia 0001251
Autosomal recessive inheritance 0000007
Cerebellar hypoplasia
Small cerebellum
Underdeveloped cerebellum
[ more ]
0001321
Cerebral atrophy
Degeneration of cerebrum
0002059
Delayed myelination 0012448
Eyelid myoclonus 0025097
Feeding difficulties
Feeding problems
Poor feeding
[ more ]
0011968
Generalized hypotonia
Decreased muscle tone
Low muscle tone
[ more ]
0001290
Generalized non-motor (absence) seizure
Brief seizures with staring spells
0002121
Global developmental delay 0001263
Hepatomegaly
Enlarged liver
0002240
Jaundice
Yellow skin
Yellowing of the skin
[ more ]
0000952
Megaloblastic anemia 0001889
Pallor 0000980
Pancytopenia
Low blood cell count
0001876
Poor head control 0002421
Postnatal microcephaly 0005484
Thrombocytopenia
Low platelet count
0001873
Variable expressivity 0003828
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Last updated: 7/1/2020

Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person’s medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional.

Testing Resources

  • Orphanet lists international laboratories offering diagnostic testing for this condition.

Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.

Clinical Research Resources

  • Orphanet lists European clinical trials, research studies, and patient registries enrolling people with this condition. 

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

  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • 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.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Megaloblastic anemia due to dihydrofolate reductase deficiency. Click on the link to view a sample search on this topic.

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