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REN-related kidney disease
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Reviewed January 2010
What is REN-related kidney disease?
REN-related kidney disease is an inherited condition that affects kidney function. This condition causes slowly progressive kidney disease that usually becomes apparent during childhood. As this condition progresses, the kidneys become less able to filter fluids and waste products from the body, resulting in kidney failure. Individuals with REN-related kidney disease typically require dialysis (to remove wastes from the blood) or a kidney transplant between ages 40 and 70.
People with REN-related kidney disease sometimes have low blood pressure. They may also have mildly increased levels of potassium in their blood (hyperkalemia). In childhood, people with REN-related kidney disease develop a shortage of red blood cells (anemia), which can cause pale skin, weakness, and fatigue. In this disorder, anemia is usually mild and begins to improve during adolescence.
Many individuals with this condition develop high blood levels of a waste product called uric acid. Normally, the kidneys remove uric acid from the blood and transfer it to urine so it can be excreted from the body. In REN-related kidney disease, the kidneys are unable to remove uric acid from the blood effectively. A buildup of uric acid can cause gout, which is a form of arthritis resulting from uric acid crystals in the joints. Individuals with REN-related kidney disease may begin to experience the signs and symptoms of gout during their twenties.
How common is REN-related kidney disease?
REN-related kidney disease is a rare condition. At least three families with this condition have been identified.
What genes are related to REN-related kidney disease?
Mutations in the REN gene cause REN-related kidney disease. This gene provides instructions for making a protein called renin that is produced in the kidneys. Renin plays an important role in regulating blood pressure and water levels in the body.
Mutations in the REN gene that cause REN-related kidney disease result in the production of an abnormal protein that is toxic to the cells that normally produce renin. These kidney cells gradually die off, which causes progressive kidney disease.
Read more about the REN gene.
How do people inherit REN-related kidney disease?
This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder.
In some cases, an affected person inherits the mutation from one affected parent. Other cases result from new mutations in the gene and occur in people with no history of the disorder in their family.
Where can I find information about diagnosis or management of REN-related kidney disease?
These resources address the diagnosis or management of REN-related kidney disease and may include treatment providers.
General information about the diagnosis and management of genetic conditions is available in the Handbook. Read more about genetic testing, particularly the difference between clinical tests and research tests.
To locate a healthcare provider, see How can I find a genetics professional in my area? in the Handbook.
Where can I find additional information about REN-related kidney disease?
You may find the following resources about REN-related kidney disease helpful. These materials are written for the general public.
You may also be interested in these resources, which are designed for healthcare professionals and researchers.
What other names do people use for REN-related kidney disease?
What if I still have specific questions about REN-related kidney disease?
Where can I find general information about genetic conditions?
The Handbook provides basic information about genetics in clear language.
These links provide additional genetics resources that may be useful.
What glossary definitions help with understanding REN-related kidney disease?
anemia ; arthritis ; autosomal ; autosomal dominant ; cell ; dialysis ; familial ; gene ; gout ; hyperkalemia ; inherited ; juvenile ; kidney ; mutation ; nephropathy ; potassium ; protein ; toxic ; uric acid
You may find definitions for these and many other terms in the Genetics Home Reference Glossary.
See also Understanding Medical Terminology.
References (5 links)
The resources on this site should not be used as a substitute for professional medical care or advice. Users seeking information about a personal genetic disease, syndrome, or condition should consult with a qualified healthcare professional. See How can I find a genetics professional in my area? in the Handbook.