The THBS1 gene gives your body instructions for a protein that helps cells communicate, attach to nearby tissue, and respond to injury. This gene plays an important role in wound healing, controlling new blood vessel growth, and keeping some immune signals in balance. If the THBS1 gene does not work as it should, these processes may become less controlled, which can affect tissue repair and has been linked in some people to eye conditions including congenital glaucoma.
What is a gene?
Genes are stretches of DNA that give cells instructions for making molecules or regulating activities in the body. Some genes carry the directions for producing proteins, the parts of cells that do much of the work. Others are used mainly to manage when certain activities happen, where they happen, and how active they are. Taken together, genes affect how the body grows and works, and they can influence how you respond to food, stress, and medicines. More detail on this topic is available in the LearnHub.
Overview
THBS1Gene function
What if the gene works
The THBS1 gene helps cells attach, communicate, and respond to tissue injury. Its protein supports wound healing and helps control new blood vessel growth.
Risk
What if the gene does not work
Milder variants in the THBS1 gene may slightly reduce thrombospondin-1 activity, while more severe variants can have a larger effect. This may disrupt wound repair, cell attachment, and TGF-β signaling, which helps regulate inflammation.
Treatment
What does that mean for your treatment
No THBS1-specific treatment or drug choice is currently established in clinical guidelines for people with a pathogenic variant in the THBS1 gene. The THBS1 gene is being studied as a biomarker and possible drug target in areas such as cancer, scarring, and blood vessel growth, but this has not yet led to routine gene directed care.
Gene function
What if the gene works
The THBS1 gene helps your body organize how cells interact with their surroundings. It makes a protein that is released into the space around cells, where it supports tissue upkeep, healing, and signaling. This background helps explain what the THBS1 gene does in the body each day.
Its protein helps cells attach to nearby support material and sense what is around them. This keeps communication between cells and surrounding tissue more organized.
THBS1 helps coordinate wound healing by guiding cell movement and the rebuilding of surrounding tissue. It supports a balanced repair response as tissues recover from everyday wear.
This gene helps control angiogenesis (the growth of new blood vessels). It supports a measured balance between making new vessels and keeping vessel growth in check.
Thrombospondin-1 can switch on transforming growth factor beta, often called TGF-β, an important cell signal. This helps guide tissue maintenance, repair, and immune activity.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and help account for normal human diversity, including variation in appearance, metabolism, or how the body responds to environmental influences. Many have no noticeable effect and simply represent natural genetic variation. In some cases, though, a variant can change how a gene works more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the THBS1 gene can change the shape, stability, or release of thrombospondin-1, which helps explain how THBS1 gene variants affect protein function. Milder missense variants may weaken how the protein folds or binds to partner molecules outside the cell, while more severe variants can sharply reduce secretion or create a shortened protein that is cleared quickly. These differences can lead to partial or greater loss of activity at the cellular level.
How variants are linked to conditions
At this time, research on how variants of the THBS1 gene are linked to conditions is still developing, and the THBS1 gene does not yet have a broadly confirmed link to one specific health condition. Anyone with a confirmed THBS1-related finding should use guidance from their doctor or genetic counselor rather than general information alone.
A variant is not necessarily a diagnosis
Genetic variants are a usual feature of human biology and are widely found across the population. Most do not directly affect health and instead represent normal human variation. For many genes, having a variant associated with a condition points to a possible link rather than a confirmed diagnosis, particularly when several genes and environmental influences play a role. Still, in some situations, one well understood variant in a particular gene is enough to establish a diagnosis.
Are there things that can increase or change my risk?
There is not yet broadly confirmed evidence on specific factors that increase or reduce health risks related to the THBS1 gene. If testing has found a change in THBS1, a doctor or genetic counselor can help explain what that result may mean for your personal and family risk.
Inheritance of THBS1 variants
There is not yet a broadly confirmed Mendelian pattern for how THBS1 gene variants are inherited in relation to a specific human condition, so the answer to how THBS1 gene variants are inherited remains limited to what is firmly established. The THBS1 gene is located on chromosome 15, which is an autosome. That means each person usually inherits one copy of the THBS1 gene from their mother and one copy from their father.
What does my THBS1 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific condition for THBS1, though this understanding can change as research develops. If you have a specific THBS1 result and questions about what it could mean for your family, a doctor or genetic counselor can help explain it in the context of your personal and family history.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a variant in the THBS1 gene, THBS1 genetic testing uses a blood, saliva, or cheek swab sample to read your DNA. A lab compares the gene’s sequence with the usual reference pattern and reports whether a variant was found, including whether its meaning is established or still uncertain.
When should I consider getting a genetic test?
There is not yet a broadly established THBS1-specific reason for genetic testing in routine care. Decisions about testing are usually based on your own health and family history and are best made with a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic result can provide valuable insight, yet how much it explains varies by the condition and the type of variant involved. How the body functions over time is also shaped by many factors, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is most useful when viewed alongside other parts of care. In other situations, a genetic result may offer a clear answer. In areas such as 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 genes can change how the body breaks down a drug, moves it through the body, or responds to it at its target. This helps explain why the same medication may work well for one person, have less effect for another, or cause more side effects in someone else.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect the way a person responds to medication. It studies relationships between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medications, genes influence how strongly a drug works or how the body handles it. This information can support more informed and more individualized treatment decisions. If you want to learn more about this topic, you can explore it further in the LearnHub.
Drugs influenced by the THBS1 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices. If you have concerns about side effects, how well a medicine is working, or other health questions, it is best to discuss them with your doctor or pharmacist.
History
THBS1 entered research in the 1970s when scientists identified thrombospondin as a major protein released from blood platelets during clotting. In early studies, it was first linked to cell adhesion, helping researchers understand how cells attach to their surroundings. From these first observations, research expanded steadily, and THBS1 later became important in cancer and blood vessel biology because it was recognized as one of the body’s natural signals that can limit new blood vessel growth. That finding helped shape broader ideas about how tissues control repair, inflammation, and tumor growth. Over time, scientists also connected the THBS1 gene to wound healing, immune signaling, and eye disease, giving it a lasting place in modern biomedical research.