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Disease Profile

Rotor syndrome

Prevalence
Prevalence estimates on Rare Medical Network websites are calculated based on data available from numerous sources, including US and European government statistics, the NIH, Orphanet, and published epidemiologic studies. Rare disease population data is recognized to be highly variable, and based on a wide variety of source data and methodologies, so the prevalence data on this site should be assumed to be estimated and cannot be considered to be absolutely correct.
<1 / 1 000 000

< 331

US Estimated

< 514

Europe Estimated

Age of onset

All ages

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ICD-10

E80.6

Inheritance

Autosomal dominant A pathogenic variant in only one gene copy in each cell is sufficient to cause an autosomal dominant disease

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Autosomal recessive Pathogenic variants in both copies of each gene of the chromosome are needed to cause an autosomal recessive disease and observe the mutant phenotype

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X-linked
dominant X-linked dominant inheritance, sometimes referred to as X-linked dominance, is a mode of genetic inheritance by which a dominant gene is carried on the X chromosome.

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X-linked
recessive Pathogenic variants in both copies of a gene on the X chromosome cause an X-linked recessive disorder

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Mitochondrial or multigenic Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria and inadequate production of energy.

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Multigenic or multifactor Inheritance involving many factors, of which at least one is genetic but none is of overwhelming importance, as in the causation of a disease by multiple genetic and environmental factors.

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Not applicable

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Other names (AKA)

Hyperbilirubinemia, Rotor type; Rotor-type hyperbilirubinemia

Categories

Blood Diseases; Congenital and Genetic Diseases; Digestive Diseases;

Summary

Rotor syndrome is an inherited disorder characterized by elevated levels of bilirubin in the blood (hyperbilirubinemia). Bilirubin is produced when red blood cells are broken down, and has an orange-yellow tint. The buildup of bilirubin in the body causes yellowing of the skin or whites of the eyes (jaundice), which is the only symptom of the disorder. Jaundice is usually evident in infancy or early childhood, and it may come and go. Rotor syndrome is caused by having mutations in both the SLCO1B1 and SLCO1B3 genes and is inherited in an autosomal recessive manner. The disorder is generally considered benign, and no treatment is needed.[1][2]

Symptoms

Jaundice, characterized by yellowing of the skin and/or whites of the eyes (conjunctival icterus), is usually the only symptom of Rotor syndrome. Jaundice usually begins shortly after birth or in childhood and may come and go.[1]

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.

Medical Terms Other Names
Learn More:
HPO ID
80%-99% of people have these symptoms
Abnormal enzyme/coenzyme activity
0012379
Conjugated hyperbilirubinemia
0002908
30%-79% of people have these symptoms
Bilirubinuria
0031811
Porphyrinuria
0010473
5%-29% of people have these symptoms
Conjunctival icterus
Yellowing of the whites of the eyes
0032106
Intermittent jaundice
Intermittent yellow skin
Intermittent yellowing of skin

[ more ]

0001046
Percent of people who have these symptoms is not available through HPO
Abnormality of skin pigmentation
Abnormal pigmentation
Abnormal skin color
Abnormal skin pigmentation
Abnormality of pigmentation
Pigmentary changes
Pigmentary skin changes
Pigmentation anomaly

[ more ]

0001000
Abnormality of the skeletal system
Skeletal abnormalities
Skeletal anomalies

[ more ]

0000924
Digenic inheritance
0010984
Jaundice
Yellow skin
Yellowing of the skin

[ more ]

0000952

Cause

Rotor syndrome is an inherited disorder caused by having mutations in both the SLCO1B1 and SLCO1B3 genes. These genes provide instructions for making proteins that are found in liver cells, where they transport bilirubin and other substances from the blood into the liver so that they can be cleared from the body. In the liver, bilirubin is dissolved in a digestive fluid called bile, and then excreted from the body.[2]

The mutations in the SLCO1B1 and SLCO1B3 genes that cause Rotor syndrome either prevent the production of the transporting proteins, or prevent them from functioning properly. When this occurs, bilirubin is not effectively removed from the body and builds up, leading to jaundice.[2]

Diagnosis

Rotor syndrome is diagnosed based on symptoms and various laboratory tests. Physical exams in affected people are typically normal, except for mild jaundice.

There are two forms of bilirubin in the body: a toxic form called unconjugated bilirubin and a nontoxic form called conjugated bilirubin. People with Rotor syndrome have a buildup of both in their blood (hyperbilirubinemia), but having elevated levels of conjugated bilirubin is the hallmark of the disorder. Conjugated bilirubin in affected people is usually more than 50% of total bilirubin.[2][1]

To confirm a disgnosis of Rotor syndrome, a person may have the following performed:

Treatment

Rotor syndrome is considered a benign disorder and does not require treatment.[1]

While no adverse drug reactions have been reported in people with Rotor syndrome, a number of commonly used drugs and/or their metabolites may have serious consequences in affected people. This is because some drugs enter the liver via one of the two transporter proteins that are absent in affected people.[1] People with Rotor syndrome should make sure all of their health care providers are aware of their diagnosis and should check with their health care providers regarding drugs that should be avoided.

Organizations

Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.

Organizations Providing General Support

    Learn more

    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.

    Where to Start

    • MedlinePlus Genetics contains information on Rotor syndrome. This website is maintained by the National Library of Medicine.

      In-Depth Information

      • GeneReviews provides current, expert-authored, peer-reviewed, full-text articles describing the application of genetic testing to the diagnosis, management, and genetic counseling of patients with specific inherited conditions.
      • 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 Rotor syndrome. Click on the link to view a sample search on this topic.

        References

        1. Milan Jirsa, AS Knisely, Alfred Schinkel, and Stanislav Kmoch. Rotor Syndrome. GeneReviews. December 13, 2012; https://www.ncbi.nlm.nih.gov/books/NBK114805/.
        2. Rotor syndrome. Genetics Home Reference (GHR). March 2013; https://ghr.nlm.nih.gov/condition/rotor-syndrome.

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