The FKBP14 gene helps your body build and support connective tissue, especially by helping collagen take its proper shape. If this gene does not work well, tissues such as ligaments, joints, the spine, and parts of the ear may be less stable. People with nonworking variants in both copies can have FKBP14-related kyphoscoliotic Ehlers-Danlos syndrome, a condition that often causes very flexible joints, low muscle tone, scoliosis, and sometimes hearing loss. This condition is inherited only when both copies of the gene are affected.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or manage activities in the body. Some genes provide the directions for producing proteins, which are the parts of cells that do the work. Others mainly regulate when those activities happen, where they take place, and how active they are. Taken together, genes affect how your body develops and works, and they can also influence how you respond to food, stress, or medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
FKBP14Gene function
What if the gene works
The FKBP14 gene helps cells fold certain collagen proteins into their proper shape. This supports connective tissues throughout the body, including skin, joints, and muscles.
Risk
What if the gene does not work
Variants in the FKBP14 gene can cause Ehlers-Danlos syndrome with loose joints, low muscle tone, hearing loss, and a spine curve that may worsen over time. Milder or severe variants can change when features appear and how marked they are.
Treatment
What does that mean for your treatment
No treatment or drug choice strategy is currently established specifically for pathogenic or loss-of-function variants in the FKBP14 gene.
Conditions associated with FKBP14
Gene function
What if the gene works
Many body tissues depend on collagen being prepared properly before it can be used. The FKBP14 gene supports this work inside the endoplasmic reticulum, the part of the cell where many proteins are finished and checked. When this process runs smoothly, connective tissues can be built and maintained in the usual way.
Inside the endoplasmic reticulum, the protein made from the FKBP14 gene helps newly made proteins fold into the right shape. This step supports stable, usable proteins that cells can send on for normal tissue building.
This protein is especially important for helping several types of collagen fold correctly. Collagen is a key support material that gives strength and flexibility to connective tissues such as skin, joints, and blood vessel walls.
The FKBP14 gene also makes a helper protein called a chaperone, which guides other proteins as they are processed. This keeps protein handling more organized in cells that build and maintain connective tissue.
What is a variant?
A genetic variant is a minor change in the DNA sequence of a gene. These changes are common and are part of normal human diversity, including differences in appearance, metabolism, and the way the body responds to environmental influences. Many variants do not have any noticeable effect and simply reflect natural genetic variation. Sometimes, though, a variant changes how a gene works more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Many pathogenic variants in the FKBP14 gene reduce or remove the FKBP22 protein, a helper inside the cell that helps certain collagens fold into the right shape. This is the key way FKBP14 variants affect protein folding: more disruptive variants often leave little or no working protein, while milder variants may preserve some activity. When very little FKBP22 remains, kyphoscoliotic Ehlers-Danlos syndrome may appear earlier or with broader features.
How variants are linked to conditions
Pathogenic variants in the FKBP14 gene cause a rare form of Ehlers-Danlos syndrome called kyphoscoliotic Ehlers-Danlos syndrome, FKBP14-related type. People with this condition often have low muscle tone in infancy, progressive scoliosis, joint looseness, and hearing loss. Finding a disease-causing FKBP14 variant on genetic testing can confirm the diagnosis.
A variant is not necessarily a diagnosis
Genetic variants are a usual part of being human and are widely seen across the general population. Most do not directly affect health and simply reflect normal human variation. For many genes, having a variant associated with a condition points to a possible link rather than a certain diagnosis, particularly when several genes and environmental influences play a role. In some situations, though, one well-characterized variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
For FKBP14, risk is mainly set by inheritance rather than lifestyle. A child is at risk of this condition when both parents carry a changed FKBP14 gene, and the chance can be higher in families where the parents are blood relatives. There is not enough evidence to say that diet, exercise, or other daily habits change the chance of having the condition.
Inheritance of FKBP14 variants
For families asking how variants of the FKBP14 gene are inherited, the established pattern is autosomal recessive. This means a person usually needs to inherit two disease-causing variants in the FKBP14 gene, one from each parent, to have the related condition. Parents who each carry one variant are often unaffected carriers. With each pregnancy, two carrier parents have a 25% chance of having an affected child, a 50% chance of having a child who is a carrier, and a 25% chance of having a child with no familial variant.
What does my FKBP14 result mean for my family?
For families with an FKBP14-related condition, parents are usually healthy carriers, and brothers or sisters may also be affected or be carriers. Close relatives on both sides of the family may also carry the changed FKBP14 gene without knowing it. This can matter for family planning, especially for siblings and other relatives who may want to learn their carrier status.
Genetic information
Genetic testing
How you find out about variants
FKBP14 genetic testing looks for variants in the FKBP14 gene using a blood sample, saliva sample, or cheek swab. A lab reads the DNA code, often as part of an Ehlers-Danlos syndrome panel or broader sequencing test, to see whether a pathogenic variant is present and help confirm the diagnosis.
When should I consider getting a genetic test?
Genetic testing for the FKBP14 gene may be worth considering when someone has signs of a rare inherited connective tissue condition, such as early spinal curvature, very flexible joints, soft stretchy skin, muscle weakness, or hearing loss. It can also help when there is a family history of this condition or a relative with a known FKBP14 variant.
A genetic result is only one part of your health story
Genetic test results can be informative, but how much they reveal varies depending on the condition and the kind of variant involved. Over time, many factors influence how the body works, including lifestyle, environment, age, and medical history. In some conditions, especially those shaped by many genes, genetic information offers context rather than certainty and is best interpreted alongside other parts of care. In other situations, a genetic result can give a clear answer. In areas like medication response, genetic results may also help put personal experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how your body handles medicines, so the same treatment may work differently from one person to another. Some people break down a drug faster or slower, which can change how much benefit they get or how likely they are to notice side effects. These differences are common and are one reason medication response is often individualized.
What is Pharmacogenetics?
Pharmacogenetics examines the way genetic differences can affect a person’s response to medicines. By studying links between genes and medications, it helps explain why the same treatment may work differently in different people. For many drugs, genes influence both how powerfully a medicine works and how the body handles it. This information can support treatment choices that are more informed and more personalized. More detail on this topic is available in the LearnHub.
Drugs influenced by the FKBP14 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or dose, so questions about treatment, side effects, or new symptoms are best discussed with your doctor. Seek medical advice promptly if a medicine causes severe side effects, trouble breathing, fainting, or rapid swelling.