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WFS1 gene

Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Gene

WFS1 gene

The WFS1 gene provides instructions for producing the protein wolframin, which is essential for regulating cellular calcium levels and maintaining endoplasmic reticulum function.

Normal Function

The WFS1 gene provides instructions for producing a protein called wolframin that is thought to regulate the amount of calcium in cells. A proper calcium balance is important for many different cellular functions, including cell-to-cell communication, the tensing (contraction) of muscles, and protein processing. The wolframin protein is found in many different tissues, such as the pancreas, brain, heart, bones, muscles, lungs, liver, and kidneys.

Within cells, wolframin is located in the membrane of a structure called the endoplasmic reticulum. Among its many activities, the endoplasmic reticulum folds and modifies newly formed proteins so they have the correct 3-dimensional shape to function properly. The endoplasmic reticulum also helps transport proteins and other molecules to specific sites within the cell or to the cell surface.

Wolframin is thought to play a role in protein folding and aid in the maintenance of endoplasmic reticulum function by regulating calcium levels. In the pancreas, wolframin may help fold a protein precursor of insulin (called proinsulin) into the mature hormone that controls blood glucose levels. In the inner ear, wolframin may help maintain the proper levels of calcium ions or other charged particles that are essential for hearing.

Health Conditions Related to Genetic Changes

Wolfram syndrome

At least 200 variants in the WFS1 gene have been found to cause Wolfram syndrome. This condition is characterized by a lack of insulin leading to increased blood glucose (diabetes mellitus), a degeneration of nerves that carry information from the eyes to the brain (optic atrophy), and a number of other features involving the urinary tract, the brain, and hearing.

  • Inheritance: Typically, variants in both copies of the WFS1 gene in each cell are necessary to cause the syndrome.
  • Cellular Impact: Variants may delete or insert DNA, or change single amino acids, resulting in no functional wolframin or reduced protein function.
  • Apoptosis: When the endoplasmic reticulum cannot function, the cell triggers its own cell death (apoptosis). The death of beta cells in the pancreas causes diabetes, while the loss of cells along the optic nerve leads to blindness.

Other disorders

A condition known as Wolfram-like syndrome is characterized by progressive hearing loss and optic atrophy, sometimes accompanied by diabetes mellitus. It is considered a mild version of Wolfram syndrome and is caused by one WFS1 gene variant in each cell. Because the second copy of the gene produces normal wolframin, the condition is less severe than classic Wolfram syndrome.

Other Names for This Gene

  • DFNA14
  • DFNA38
  • DFNA6
  • DIDMOAD
  • WFRS
  • WFS
  • WFS1_HUMAN
  • Wolfram syndrome 1 (wolframin)

Frequently Asked Questions

The earliest and most common signs of Wolfram syndrome are typically diabetes mellitus (high blood sugar due to insulin deficiency) and optic atrophy (progressive vision loss due to nerve degeneration). These usually appear in childhood or adolescence. Other early indicators can include diabetes insipidus (excessive thirst and urination) and hearing loss.
The WFS1 gene provides instructions for wolframin, a protein crucial for regulating calcium levels and maintaining the function of the endoplasmic reticulum (ER) within cells. The ER is vital for proper protein folding and cellular health in many tissues. When wolframin is dysfunctional, it disrupts ER function and calcium balance in various organs, including the pancreas (leading to diabetes) and the optic nerves (leading to vision loss), as well as the inner ear, brain, and kidneys.
Yes, Wolfram syndrome is an inherited condition. It is typically inherited in an autosomal recessive pattern, meaning an individual must inherit two copies of a mutated WFS1 gene (one from each parent) to develop the syndrome. Parents who carry one copy of the mutated gene are usually unaffected.
Management of Wolfram syndrome focuses on treating the specific symptoms. This includes insulin therapy for diabetes mellitus, regular ophthalmological care for optic atrophy, hearing aids for hearing loss, and hormone replacement for diabetes insipidus. Multidisciplinary care involving endocrinologists, ophthalmologists, neurologists, and audiologists is essential to manage the complex and progressive nature of the condition.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.