The SLC38A7 gene helps move certain amino acids, the building blocks of protein, across cell membranes so cells can grow, make proteins, and support brain function. This gene helps your body keep these nutrients available where they are needed. If it does not work properly, cells may struggle to use amino acids in a balanced way, which can affect normal brain development. Certain inherited variants in the SLC38A7 gene are linked to a rare condition that can include developmental delay, seizures, movement problems, and a smaller head size.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or manage activities in the body. Some provide the directions for producing proteins, which are the parts of cells that do much of the work. Others are involved mainly in regulating when certain processes happen, where they happen, and how active they are. Taken together, genes affect how your body develops and works, and they can also influence how you respond to food, stress, and medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
SLC38A7Gene function
What if the gene works
The SLC38A7 gene helps cells move certain amino acids, especially glutamine, across membranes. This supports everyday cell nutrition, protein building, and energy use.
Risk
What if the gene does not work
Variants in the SLC38A7 gene can range from milder to more severe and may reduce transport of neutral amino acids, especially glutamine, across cell membranes. This can alter nutrient sensing and other cell housekeeping pathways.
Treatment
What does that mean for your treatment
For a pathogenic or loss-of-function variant in the SLC38A7 gene, no gene-specific treatment or management approach is currently established.
Gene function
What if the gene works
Your cells need a steady flow of amino acids, the small building blocks used to make proteins. The SLC38A7 gene helps manage that flow by making a transporter protein that moves selected amino acids across membranes. It uses sodium, a charged mineral, to support this movement. Understanding what the SLC38A7 gene does in the body helps explain how cells stay supplied for routine work.
The SLC38A7 gene helps cells move selected amino acids across membranes. These building blocks support everyday cell function and protein production.
Its transporter uses sodium as part of the process that drives amino acid movement. This gives cells a controlled way to shift nutrients where they are needed.
By moving amino acids, this gene supports a steady internal supply for making proteins and other routine tasks. That helps cells maintain normal day to day activity.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and are part of normal human diversity, such as variation in appearance, metabolism, or the way the body responds to environmental influences. Many variants do not have any noticeable effect and simply reflect natural genetic variation. At times, however, a variant can change how a gene functions more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the SLC38A7 gene can change the shape, stability, or placement of its transporter protein inside cells, reducing glutamine movement across lysosomal membranes. This shows how variants influence the SLC38A7 gene's function at the cellular level. Some protein-changing variants may leave partial transport activity, while more severe variants can sharply reduce or abolish it. In people with disease linked to the SLC38A7 gene, lower remaining activity often goes along with earlier onset and more marked neurologic features.
How variants are linked to conditions
The SLC38A7 gene does not yet have a broadly confirmed link to a specific health condition, though this can change as research develops. For people reading about conditions linked to SLC38A7 gene variants, any reported finding is best interpreted with a doctor or genetic counselor in the context of the person’s own health and family history.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widely found in 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 points to a possible link rather than a definite diagnosis, especially when several genes and environmental factors play a role. 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 isn't yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the SLC38A7 gene. If a change in SLC38A7 is found on genetic testing, a doctor or genetic counselor can help explain what it may mean for you or your family.
Inheritance of SLC38A7 variants
In families looking into how SLC38A7 gene variants are inherited, the recognized pattern is autosomal recessive. This means a child usually inherits two changed copies of the SLC38A7 gene, one from each parent. Parents who carry one variant are often unaffected. If both parents carry a variant, each pregnancy has a 25% chance of the child inheriting both changed copies, a 50% chance of being a carrier, and a 25% chance of inheriting neither variant.
What does my SLC38A7 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific condition for SLC38A7, though this understanding can change as research develops. If you have a specific SLC38A7 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
Variants in the SLC38A7 gene are found with genetic testing for SLC38A7 variants, usually by reading DNA from a blood sample or saliva. Labs may use a multigene panel, exome sequencing, or genome sequencing, then compare your DNA with a reference sequence to see whether a variant is present.
When should I consider getting a genetic test?
There is not yet a broadly established reason to test the SLC38A7 gene on its own. Testing may be considered as part of a broader genetics workup for unexplained developmental delay, seizures, or related nervous system symptoms, especially when these run in a family.
A genetic result is only one part of your health story
A genetic result can provide useful insight, but how much it reveals depends on the condition and the specific variant involved. Lifestyle, environment, age, and medical history are also among the many factors that shape how the body functions over time. In some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best understood together with other parts of care. In other situations, a genetic result can 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 genes can change how the body absorbs, breaks down, moves, or responds to a drug, so the same medication may work better for one person than for another. These differences are common and can influence how much benefit someone gets from treatment or how sensitive they are to side effects.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in genes can affect a person’s response to medications. It studies connections between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medicines, genes can influence how strongly a drug works or how the body processes it. This information can support treatment decisions that are more informed and more individualized. More about this topic is available in the LearnHub.
Drugs influenced by the SLC38A7 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, how well a medicine is working, or new health changes while taking treatment, talk with your doctor.