The SERPINF1 gene helps the body build and maintain strong, properly mineralized bone. It provides instructions for a protein that supports bone tissue and helps keep blood vessel growth in balance. This gene plays an important role in everyday bone strength, so people with harmful variants in the SERPINF1 gene can have bones that break more easily, often as part of osteogenesis imperfecta type 6. Some may also develop bone pain, reduced growth, or changes in bone shape over time.
What is a gene?
A gene is a section of DNA that carries instructions your cells use to make molecules or manage processes in the body. In some genes, those instructions are used to produce proteins, the parts of cells that do the work. Other genes mainly help determine when certain processes happen, where they happen, and how active they are. Taken together, genes affect how the body develops and functions, and they can also shape how you respond to food, stress, or medications. To explore this subject in more detail, you can learn more in the LearnHub.
Overview
SERPINF1Gene function
What if the gene works
The SERPINF1 gene makes a protein called PEDF. PEDF helps bones harden properly and helps control blood vessel growth in tissues such as the eye.
Risk
What if the gene does not work
Certain variants in the SERPINF1 gene most often cause osteogenesis imperfecta type VI, with fragile bones, repeated fractures, and growth problems. Milder and more severe variants can affect when symptoms appear and how strongly bones are affected.
Treatment
What does that mean for your treatment
No SERPINF1-specific treatment approach is currently established in clinical guidelines. Care usually follows standard supportive management, and some people with SERPINF1-related bone fragility have received denosumab in specialist care, but this remains an emerging approach rather than a guideline-based drug choice.
Conditions associated with SERPINF1
Gene function
What if the gene works
Your body uses the SERPINF1 gene to make PEDF, a protein that works outside cells. It supports healthy bone hardening and helps keep new blood vessel growth in balance. PEDF also helps protect some cells, including cells in the eye.
PEDF helps bone tissue add minerals in a controlled way. This supports strong, well-shaped bone as it grows and renews itself. This is a key part of how the SERPINF1 gene supports bone strength.
PEDF helps limit excess growth of new blood vessels. This keeps tissue growth more controlled and is especially important in places like the eye, where too many new vessels can disrupt normal structure.
PEDF supports the survival and steady function of certain cells during everyday stress. This protective effect is well known in the retina, the light sensing tissue at the back of the eye.
What is a variant?
A genetic variant refers to a minor change in the DNA sequence within a gene. These changes are common and form part of normal human diversity, such as differences in appearance, metabolism, or the way the body responds to environmental influences. Many variants do not cause any noticeable effect and simply reflect natural genetic variation. In some situations, though, a variant can affect how a gene functions more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Many SERPINF1 gene variants reduce or stop production of PEDF, or make the protein unstable so cells break it down early. In how SERPINF1 gene variants affect protein function, the changes range from milder variants that leave some working protein to more severe variants that leave little or none. In people with osteogenesis imperfecta type VI, stronger loss of function is often linked to earlier or more marked bone problems.
How variants are linked to conditions
Pathogenic variants in both copies of the SERPINF1 gene cause osteogenesis imperfecta type VI, a genetic condition marked by fragile bones, frequent fractures, and often short stature. In practice, SERPINF1 gene variants linked to osteogenesis imperfecta type VI can help confirm the diagnosis when a person’s symptoms and imaging findings fit. This gene-condition link is well established in human genetics.
A variant is not necessarily a diagnosis
Variants in genes are a usual feature of human biology and are widely found across the population. Most do not directly affect health and instead reflect normal human diversity. For many genes, having a variant associated with a condition points to a possible link rather than a confirmed diagnosis, particularly when more than one gene and environmental influences play a role. Still, in certain situations, 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 SERPINF1, risk is mainly determined by inheritance: a child is affected when they inherit gene changes in both copies, so having two carrier parents or a family history raises the chance. There is not enough evidence to say that lifestyle changes lower the chance of having this condition.
Inheritance of SERPINF1 variants
Variants in the SERPINF1 gene that cause SERPINF1-related osteogenesis imperfecta are inherited in an autosomal recessive pattern. This means a child usually inherits one nonworking copy from each parent, and the parents are typically healthy carriers. When both parents carry a SERPINF1 variant, each pregnancy has a 25% chance of an affected child, a 50% chance of a child who is a carrier, and a 25% chance of a child with two working copies. This is the well-established SERPINF1 inheritance pattern.
What does my SERPINF1 result mean for my family?
For SERPINF1, the main family implication is usually a recessive bone condition called osteogenesis imperfecta type 6. This often means both parents carry one changed copy without having the condition themselves, and brothers or sisters may also be affected or be carriers. Other relatives, such as aunts, uncles, and cousins, may also carry the same change in the family.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for variants in the SERPINF1 gene usually uses a blood or saliva sample. A lab reads the gene’s DNA code to look for changes that may help explain symptoms, confirm a diagnosis, or clarify whether someone carries a family variant.
When should I consider getting a genetic test?
Consider testing the SERPINF1 gene if a child or adult has brittle bones with repeated fractures, bone pain, or bone changes that suggest a rare form of osteogenesis imperfecta, often called brittle bone disease. Testing can also help when this pattern runs in a family or when parents want to clarify a child’s diagnosis.
A genetic result is only one part of your health story
Genetic results can be informative, yet how much they reveal varies by the condition and the type of variant involved. Over time, many factors influence how the body works, including lifestyle, environment, age, and medical history. For some conditions, especially those shaped by many genes, genetic information provides context rather than certainty and is best considered alongside other parts of care. In other situations, a genetic result may offer a clear answer. In areas like medication response, genetic results can also help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small differences in DNA can change how the body breaks down a drug, moves it through the body, or responds to it at the target tissue. This helps explain why the same medication may work well for one person, seem weaker for another, or cause more side effects in someone who is more sensitive to it.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect a person’s response to medications. It looks at the relationship between genes and drugs to better understand why the same treatment can work differently from one person to another. For many medicines, genes help shape how strongly a drug works or how the body processes it. This information can support more informed and individualized treatment decisions. You can read more about this topic in the LearnHub.
Drugs influenced by the SERPINF1 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 general health concerns, new symptoms, or questions about side effects and how medicines may affect you are best discussed with your doctor.
History
The SERPINF1 gene entered medical research in the early 1990s, when scientists studying the eye identified a protein released by retinal cells and named it pigment epithelium derived factor, or PEDF. At first, work on this gene centered on eye biology and blood vessel growth, and it gradually drew interest in several fields of medicine. From these first observations, research expanded steadily. A major clinical milestone came in 2011, when pathogenic variants in the SERPINF1 gene were linked to osteogenesis imperfecta type VI, a form of brittle bone disease. That discovery helped connect earlier laboratory findings with a clearly recognized inherited condition and shaped how clinicians classify some unexplained bone fragility cases today.