Citrullinemia type I
Other Names for this Disease
- Classic citrullinemia
- Argininosuccinate synthetase deficiency
- ASS deficiency
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urea cycle disorders. In most cases, the condition becomes evident in the first few days of life. Affected infants typically appear normal at birth, but as ammonia builds up in the body they experience a progressive lack of energy (lethargy), poor feeding, vomiting, seizures, and loss of consciousness. Citrullinemia type I is caused by mutations in the ASS1 gene. It is inherited in an autosomal recessive pattern.Citrullinemia type I is an inherited disorder that causes ammonia and other toxic substances to accumulate in the blood. This condition, also known as classic citrullinemia, belongs to a class of genetic diseases called
Last updated: 4/20/2010
- Citrullinemia. Genetics Home Reference (GHR). 2006; http://www.ghr.nlm.nih.gov/condition=citrullinemia. Accessed 7/11/2011.
- Citrullinemia. National Organization for Rare Disorders (NORD). 2001; http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Citrullinemia. Accessed 4/20/2010.
- Genetics Home Reference (GHR) contains information on Citrullinemia type I. This website is maintained by the National Library of Medicine.
- MedlinePlus.gov provides more information on urea cycle disorders in general. MedlinePlus is a Web site designed by the National Library of Medicine to help you research your health questions.
- The National Organization for Rare Disorders (NORD) is a federation of more than 130 nonprofit voluntary health organizations serving people with rare disorders. Click on the link to view information on this topic.
- The Screening, Technology And Research in Genetics (STAR-G) Project has a fact sheet on this condition, which was written specifically for families that have received a diagnosis as a result of newborn screening. This fact sheet provides general information about the condition and answers questions that are of particular concern to parents.
- Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
- 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 Citrullinemia type I. Click on the link to view a sample search on this topic.