The SERINC3 gene helps cells use the amino acid serine to make certain fats that are important for cell membranes. If it does not work normally, cells may be less able to keep their outer membrane stable and support normal cell signaling. The protein made by this gene also seems to help limit how easily some viruses infect new cells. Most discussion of the SERINC3 gene remains in research rather than routine medical care.
What is a gene?
Genes are stretches of DNA that give your cells instructions for making molecules or managing processes in the body. Some genes carry the directions for producing proteins, which are the parts of cells that do the work. Other genes mainly regulate 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 influence how you respond to food, stress, or medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
SERINC3Gene function
What if the gene works
The SERINC3 gene helps cells make and maintain certain membrane fats. This supports normal cell membranes and can influence how cells send signals and interact with other proteins.
Risk
What if the gene does not work
Milder variants in the SERINC3 gene may partly reduce the protein's work at cell membranes, while more severe variants can cause a larger loss of function. This may alter normal membrane lipid handling and related cell signaling.
Treatment
What does that mean for your treatment
No SERINC3-specific treatment or management approach is currently established for people with a pathogenic or loss-of-function variant in the SERINC3 gene. The SERINC3 gene is being studied in early research for possible roles in viral infection and some cancers, but this has not led to guideline-based drug choices.
Gene function
What if the gene works
In your cells, the SERINC3 gene supports the making and upkeep of membrane fats. It helps cells use serine, an amino acid from food and normal metabolism, as part of this process. This steady work supports cell membrane function in the body, including shape, signaling, and movement of materials.
The SERINC3 gene helps cells use serine, an amino acid, during the making of certain membrane fats. This supports a normal supply of fats used in many tissues.
Its protein supports production of phosphatidylserine and sphingolipids, two fats that help build cell membranes. These fats help membranes stay stable and ready for routine cell signaling.
By shaping membrane fat makeup, the SERINC3 gene helps cells maintain working outer surfaces and internal membranes. This supports everyday tasks such as signaling and moving materials between cell compartments.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and help shape normal human diversity, such as differences in appearance, metabolism, or the way the body responds to environmental influences. Many have no noticeable effect and are simply part of 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
Variants in the SERINC3 gene can change the protein’s shape, stability, or placement in the cell membrane, which may weaken how it interacts with other cell components. In practical terms, how SERINC3 gene variants affect protein function depends on the specific DNA change. Milder variants may only partly reduce protein activity, while more severe variants can truncate the protein or sharply lower how much of it the cell makes, leading to partial or near-complete loss of function.
How variants are linked to conditions
At present, the SERINC3 gene does not yet have a broadly confirmed link to a specific health condition, though research on SERINC3 gene variants and health conditions is still developing. Anyone with a SERINC3 variant result should rely on guidance from their doctor or genetic counselor rather than general information.
A variant is not necessarily a diagnosis
Gene variants are a normal feature of human biology and are common throughout the general population. Most do not have a direct effect on health and simply reflect natural human diversity. For many genes, carrying a variant associated with a condition indicates a possible link rather than a definite diagnosis, especially when several genes and environmental factors also contribute. In some situations, though, a single well-characterized variant in a particular gene can 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 SERINC3 gene. If a test has found a change in SERINC3, a doctor or genetic counselor can help explain what it may mean in the context of your personal and family history.
Inheritance of SERINC3 variants
There is not yet a broadly confirmed disease-specific inheritance pattern for variants in the SERINC3 gene, so SERINC3 gene inheritance is not described as a single established autosomal dominant, autosomal recessive, or X-linked condition. This may become clearer as research develops. The SERINC3 gene is located on chromosome 20, which is an autosome, so each person inherits one copy from their mother and one copy from their father.
What does my SERINC3 result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific health condition for the SERINC3 gene, and this picture may change as research grows. If you have a specific SERINC3 result and want to understand what it could mean for relatives, a doctor or genetic counselor can explain it in the context of your family history and the exact variant found.
Genetic information
Genetic testing
How you find out about variants
To look for changes in the SERINC3 gene, a lab analyzes DNA from blood, saliva, or a cheek swab, often through genetic testing for SERINC3 variants as part of broader sequencing. The lab reads the gene's code and compares it with a reference sequence to identify and classify any variant.
When should I consider getting a genetic test?
There is not yet a broadly established medical reason to test the SERINC3 gene on its own. Decisions about genetic testing are usually best made with a doctor or genetic counselor, based on your health history and family history.
A genetic result is only one part of your health story
Genetic results can provide useful insight, but how much they reveal varies with the condition and the kind of variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, also influence how the body functions. In some conditions, especially those shaped by many genes, genetic information offers context rather than certainty and makes the most sense when considered with other parts of care. In other situations, a genetic result can give a clear answer. In areas like medication response, these 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. This helps explain why the same treatment may work well for one person, seem less effective for another, or cause more side effects in someone else. One reason is that inherited differences can change how the body breaks down, transports, or responds to a drug, which can influence both benefit and sensitivity.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in genes affect the way people respond to medicines. It studies gene drug patterns to help explain why the same treatment can work differently from one person to another. With many medications, genes can influence how powerfully a drug works or how the body handles it. This information can support better informed, more individualized treatment choices. More detail on this topic is available in the LearnHub.
Drugs influenced by the SERINC3 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or response. If you have concerns about side effects, a medicine not working as expected, or changes in your treatment, discuss them with your doctor.