The ADAMTS5 gene helps control how cartilage, the smooth cushioning tissue in joints, is remodeled. This gene plays an important role in breaking down aggrecan, a key part of cartilage, so older tissue can be cleared and renewed. If its activity is out of balance, cartilage may wear down more than it should, which can contribute to joint pain and osteoarthritis. Most ADAMTS5 variants do not cause a single inherited condition on their own, but some may influence joint health.
What is a gene?
Genes are sections of DNA that give cells instructions to make molecules or regulate processes in the body. Some genes carry the directions for producing proteins, the parts of cells that do much of the work. Others mainly determine when certain processes happen, where they take place, and how strongly they run. Together, genes affect how the body develops and functions, and they can influence how you respond to food, stress, and medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
ADAMTS5Gene function
What if the gene works
The ADAMTS5 gene helps your body remodel cartilage, the firm tissue that cushions joints. Its protein trims aggrecan, a cartilage molecule that helps hold water, so joint tissue can be built, maintained, and renewed.
Risk
What if the gene does not work
Milder to more severe variants in the ADAMTS5 gene can change how well cells break down aggrecan, a key cartilage support protein. This may alter normal cartilage turnover and the balance of signals in the tissue.
Treatment
What does that mean for your treatment
At present, no treatment or management approach is specifically guided by a pathogenic or loss-of-function variant in the ADAMTS5 gene. The ADAMTS5 gene is being studied as a drug target in osteoarthritis, where blocking its protein may help protect cartilage, but this has not become routine care.
Gene function
What if the gene works
In joints and other connective tissues, the ADAMTS5 gene helps your body refresh the material that gives cartilage its cushioning and spring. It provides instructions for a protein that works outside cells, where it carefully trims large support molecules. This steady remodeling helps cartilage stay functional as it handles everyday movement and load.
The ADAMTS5 gene helps break down aggrecan, a large water holding building block in cartilage. This controlled trimming is part of normal cartilage renewal in joints.
Its protein works outside cells, where it cuts selected pieces of the surrounding support material. This is a central part of what the ADAMTS5 gene does in cartilage and other connective tissues.
By reshaping the matrix (the supportive material around cells), the ADAMTS5 gene helps tissues adjust during growth and everyday use. This ongoing remodeling supports smooth movement and normal joint function.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These changes are common and help shape normal human diversity, including differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not cause any noticeable effect and simply represent natural genetic variation. In some situations, though, a variant can change how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Changes in the ADAMTS5 gene can alter how much protein is made, how well it folds, and how effectively it is released and works outside the cell. Milder variants may partly reduce stability or enzyme activity, while more severe variants can leave little or no working protein. This is how ADAMTS5 variants affect protein function at the cellular level.
How variants are linked to conditions
The ADAMTS5 gene does not yet have a broadly confirmed link to a specific health condition, though research on how ADAMTS5 gene variants are linked to conditions is still developing. Anyone with a reported change in the ADAMTS5 gene should interpret it with their doctor or genetic counselor, because the meaning depends on the exact variant and the person’s medical history.
A variant is not necessarily a diagnosis
Genetic variants are a usual feature of human biology and are widely found in the general population. Most do not have a direct effect on health and instead represent natural human variation. For many genes, carrying a variant associated with a condition points to a possible link rather than a definite diagnosis, especially when several genes and environmental factors are involved. In some situations, though, a single well-characterized variant in a specific gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
There is not yet broadly confirmed evidence on specific factors that clearly increase or reduce health risk related to the ADAMTS5 gene. For most people, any effect of ADAMTS5 is likely shaped by many other genes plus everyday factors such as age, body weight, joint injuries, and overall joint wear over time.
Inheritance of ADAMTS5 variants
There is not yet a broadly confirmed Mendelian pattern for how ADAMTS5 gene variants are inherited in relation to a specific human genetic condition. In practice, ADAMTS5 gene inheritance is understood mainly as ordinary inheritance of one copy from each parent, rather than a clearly established autosomal dominant or autosomal recessive disease pattern. The ADAMTS5 gene is located on chromosome 21, which is an autosome, so everyone inherits two copies overall, one from their mother and one from their father.
What does my ADAMTS5 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific health condition for ADAMTS5, though this understanding can change as research develops. If you have a specific ADAMTS5 result and questions about what it could mean for your family, a doctor or genetic counselor can explain it in the context of your personal and family history.
Genetic information
Genetic testing
How you find out about variants
Testing for variants in the ADAMTS5 gene uses DNA from a blood or saliva sample, usually read by sequencing. This kind of ADAMTS5 genetic testing can find a known variant, a newly identified variant, or no relevant change in the part of the gene that was analyzed.
When should I consider getting a genetic test?
There is not yet a widely accepted ADAMTS5-specific reason for routine genetic testing. Decisions about testing are best made with a doctor or genetic counselor, based on your symptoms, family history, and the broader question your care team is trying to answer.
A genetic result is only one part of your health story
A genetic finding can provide meaningful information, but how much it reveals depends on the condition and the type of variant involved. Age, environment, lifestyle, and medical history also shape how the body works over time. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is most useful when 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 make personal experiences easier to understand.
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. Because of this, the same medication may work better for some people, work less well for others, or cause more side effects in certain people.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can shape a person’s response to medications. It looks at links between genes and drugs to better understand why the same treatment can work differently from one person to another. For many medicines, genes affect how strongly a drug works or how the body handles it. This information can support more informed, individualized treatment decisions. You can learn more about this topic in the LearnHub.
Drugs influenced by the ADAMTS5 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in predicting how medicines will work, so any concerns about symptoms, treatment choices, or side effects are best discussed with your doctor. Seek medical advice if pain, swelling, or limits in daily movement are getting worse or if a medicine is causing problems.
History
The ADAMTS5 gene entered medical research in the late 1990s, when scientists were sorting out a newly recognized family of genes involved in shaping and remodeling body tissues. Early studies drew attention to it because it could break down aggrecan, a major part of cartilage, which quickly made it important in arthritis research. From these first observations, research expanded steadily. In the 2000s, animal studies helped show that lowering ADAMTS5 activity could protect joint cartilage, and this pushed the gene into broader discussions about osteoarthritis. Over time, the ADAMTS5 gene became a well-known target in efforts to understand why joints wear down and how future treatments might slow that process.