The GPR55 gene gives your cells instructions for a receptor, a kind of signal catcher, that helps them respond to chemical messages in the brain, immune system, gut, and bone. This gene plays an important role in how your body handles pain signals, inflammation, bone renewal, and energy balance, so if it does not work normally, these processes may be less well controlled. Many variants in this gene are harmless, while some may influence health risk rather than point to a diagnosis on their own.
What is a gene?
Genes are stretches of DNA that give cells instructions for making molecules or managing activities in the body. Some carry the directions to produce proteins, which are the parts of cells that do much of the work. Others mainly regulate when certain activities happen, where they happen, and how active they are. As a group, genes affect how the body grows and works, and they can also influence your response to food, stress, and medicines. For a closer look at this topic, you can read more in the LearnHub.
Overview
GPR55Gene function
What if the gene works
The GPR55 gene gives cells instructions for a signaling receptor that helps them respond to chemical messages. It is active in the brain, gut, immune system, and bones, where it may influence pain signaling, inflammation, movement, and bone balance.
Risk
What if the gene does not work
Changes in the GPR55 gene can range from milder to more severe variants, which may partly reduce or more strongly alter this cell surface receptor’s signaling. Cells may then respond differently to lipid signals, affecting calcium signaling and cell movement.
Treatment
What does that mean for your treatment
At present, no treatment or management approach tailored to a pathogenic or loss-of-function variant in the GPR55 gene is established in clinical guidelines. The GPR55 gene is under study as a possible drug target or biomarker in pain, inflammation, epilepsy, and some cancers.
Gene function
What if the gene works
Cells use the GPR55 gene to notice and respond to certain fatty chemical signals. It is part of the body’s cell communication system, especially for messages that start at the cell surface. When working normally, this gene helps turn outside signals into organized actions inside the cell.
The GPR55 gene gives cells instructions for a receptor, a docking point on the cell surface, that detects certain fatty messenger molecules. This lets cells notice signals in their surroundings and begin a response.
Once activated, the receptor passes the message inward through linked proteins inside the cell. That signaling role is central to how the GPR55 gene works in everyday cell communication.
A normal GPR55 signal can briefly raise calcium inside cells. Calcium is a common internal messenger, and this helps coordinate quick, controlled cell responses.
These signals help fine tune how cells change shape, move, and interact with nearby cells. In this way, the GPR55 gene supports routine responses across several body tissues.
What is a variant?
A genetic variant is a small change in the DNA sequence within a gene. These changes are common and form part of normal human diversity, including differences in appearance, metabolism, and how the body responds to environmental influences. Many variants have no noticeable effect and simply represent natural genetic variation. In some cases, though, a variant can change gene function more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Descriptions of how variants influence the GPR55 gene's function usually focus on changes in receptor folding, cell surface delivery, ligand binding, and signal strength. Some variants only slightly reduce signaling or make the receptor less stable, while more severe variants can leave little or no receptor at the cell surface or weaken its response to signals. Different DNA changes may also alter how the receptor made from the GPR55 gene interacts with partner proteins inside the cell.
How variants are linked to conditions
At this stage, variants in the GPR55 gene do not yet have a broadly confirmed link to a specific health condition, and research on GPR55 gene variants and health conditions is still developing. If you have a confirmed variant in the GPR55 gene, your own clinical history and guidance from your doctor or genetic counselor are the best way to interpret what it may mean.
A variant is not necessarily a diagnosis
Variants in genes are a usual feature of human biology and are widespread across the population. Most do not directly affect health and instead reflect normal human diversity. With many genes, having a variant associated with a condition points to a possible link, not a certain diagnosis, particularly when several genes and environmental influences contribute. In other situations, though, one well-characterized variant in a particular gene may be 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 increase or reduce health risk related to the GPR55 gene. If testing has found a change in GPR55, a doctor or genetic counselor can help explain what it may mean in the context of your personal and family history.
Inheritance of GPR55 variants
There is not yet a broadly confirmed, disease-specific Mendelian pattern for how variants of the GPR55 gene are inherited. In practice, how variants of the GPR55 gene are inherited has not been tied to one clearly established autosomal dominant, autosomal recessive, or X linked condition. The GPR55 gene is located on chromosome 2, which is an autosome, so each person inherits one copy from each parent.
What does my GPR55 result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific condition for GPR55, and research on this gene is still developing. If you have a specific GPR55 result, what it may mean for relatives depends on the exact change found and the health issue being looked at.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for GPR55 gene variants usually uses a blood or saliva sample. A lab reads the DNA sequence of the GPR55 gene and reports whether a variant was found, often as benign, uncertain, or more likely to affect health. Results are interpreted alongside symptoms and family history.
When should I consider getting a genetic test?
There is not yet a broadly established reason to get genetic testing specifically for the GPR55 gene. Decisions about genetic testing are usually based on your symptoms, other health findings, 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 useful insight, but how much it explains depends on the condition and the kind of variant involved. Many other factors, including lifestyle, environment, age, and medical history, also shape how the body works over time. For some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is best considered together with 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. Some people break down a drug faster or slower than expected, while others may be more or less sensitive to its effects. These inherited differences are common and can help explain why the same treatment works well for one person but not as well for another. They can also influence the chance of side effects or how strongly a medicine is felt in the body.
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 treatments can work differently from one person to another. For many medicines, genes can influence how strongly a drug works or how the body handles it. This information can support treatment decisions that are more informed and more individualized. More details on this topic are available in the LearnHub.
Drugs influenced by the GPR55 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices. Questions about symptoms, side effects, or whether a treatment is right for you are best discussed with your doctor.