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

Renal glycosuria


Other Names:
Renal glucosuria
Categories:
Renal glycosuria is a rare condition in which glucose is excreted in the urine despite normal or low blood glucose levels. With normal kidney function, glucose is excreted in the urine only when there are abnormally elevated levels of glucose in the blood. However, in people with renal glycosuria, glucose is abnormally eliminated in the urine due to improper functioning of the renal tubules, which are the primary components of the filtering units of the kidneys.[1] In most people with renal glycosuria, there are no apparent symptoms or serious effects. Rare cases of polyuria (increased urine output), enuresis (involuntary urination), and mild delays in growth and maturation during puberty have been reported. When renal glycosuria occurs as an isolated finding with otherwise normal kidney function, the condition is thought to be caused by mutations in the SLC5A2 gene. Treatment is not typically needed.[2]
Last updated: 1/20/2016

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
Enuresis nocturna 0010677
Percent of people who have these symptoms is not available through HPO
Autosomal dominant inheritance 0000006
Autosomal recessive inheritance 0000007
Glycosuria
Glucose in urine
0003076
Polydipsia
Extreme thirst
0001959
Polyphagia
Voracious appetite
0002591
Polyuria
Increased urine output
0000103
Variable expressivity 0003828
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Last updated: 7/1/2020
In most affected individuals, no treatment is required. However, some individuals with renal glycosuria may develop diabetes mellitus. Therefore, appropriate testing should be conducted to rule out diabetes and to regularly monitor those with confirmed renal glycosuria.[1]
Last updated: 1/20/2016

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

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

  • ClinicalTrials.gov lists trials that are related to Renal glycosuria. Click on the link to go to ClinicalTrials.gov to read descriptions of these studies.

    Please note: Studies listed on the ClinicalTrials.gov website are listed for informational purposes only; being listed does not reflect an endorsement by GARD or the NIH. We strongly recommend that you talk with a trusted healthcare provider before choosing to participate in any clinical study.

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

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

  • The National Organization for Rare Disorders (NORD) has a report for patients and families about this condition. NORD is a patient advocacy organization for individuals with rare diseases and the organizations that serve them.

In-Depth Information

  • 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 Renal glycosuria. Click on the link to view a sample search on this topic.

Questions sent to GARD may be posted here if the information could be helpful to others. We remove all identifying information when posting a question to protect your privacy. If you do not want your question posted, please let us know. Submit a new question

  • I have renal glycosuria with normal blood glucose levels and normal renal function. Is treatment necessary? See answer


  1. Renal glycosuria. National Organization for Rare Disorders (NORD). 2007; http://rarediseases.org/rare-diseases/renal-glycosuria/.
  2. Rajendra Bhimma. Renal Glycosuria. Medscape. 5/2/2015; http://emedicine.medscape.com/article/983678-overview.