Crigler Najjar Syndrome
National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Crigler Najjar Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
- Familial Nonhemolytic Unconjugated Hyperbilirubinemia
- Hereditary Unconjugated Hyperbilirubinemia
Crigler-Najjar syndrome is a rare genetic disorder characterized by elevated levels of bilirubin in the blood (hyperbilirubinemia). Bilirubin is a yellowish waste product that is formed when the liver breaks down old or worn out red blood cells (hemolysis). Individuals with Crigler-Najjar syndrome develop hyperbilirubinemia in the absence of hemolysis. The elevated bilirubin levels occur because affected individuals lack a specific liver enzyme required to break down (metabolize) bilirubin. The hallmark finding of Crigler-Najjar syndrome is persistent yellowing of the skin, mucous membranes and whites of the eyes (jaundice). There are two forms of this disorder: Crigler-Najjar syndrome type I, characterized by a nearly complete lack of enzyme activity and severe symptoms; and Crigler-Najjar syndrome type II, characterized by partial enzyme activity and milder symptoms. Most cases of Crigler-Najjar syndrome are inherited as autosomal recessive traits and are due to errors or disruptions (mutations) of the UGT1 gene located on chromosome 2.
American Liver Foundation
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CLIMB (Children Living with Inherited Metabolic Diseases)
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Children's Liver Disease Foundation
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Crigler-Najjar Association/King's Way Foundation
- c/o Cory Mauck
- 3134 Bayberry Street
- Wichita, KS 67226
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- Website: http://www.criglernajjar.com
Genetic and Rare Diseases (GARD) Information Center
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- Website: http://rarediseases.info.nih.gov/GARD/
Parents of Infants and Children with Kernicterus (P.I.C.K.)
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For a Complete Report
This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.
It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report
This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.
For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email firstname.lastname@example.org
Last Updated: 12/21/1969
Copyright 2008 National Organization for Rare Disorders, Inc.
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