The TMEM170A gene helps cells maintain the shape of the endoplasmic reticulum and the membrane around the nucleus, which supports normal cell growth and development. When this gene does not work properly, cells may become less organized and may not develop as expected. What this gene does can influence how tissues form early in life, especially in the brain and eyes. Rare harmful variants in the TMEM170A gene have been linked to an inherited developmental condition that can include small head size, developmental delay, and vision problems.
What is a gene?
Genes are stretches of DNA that hold instructions your cells use to make molecules or manage processes in the body. Some genes provide the directions for producing proteins, the parts of cells that carry out much of the work. Other genes mainly regulate when certain processes happen, where they happen, and how strongly they operate. 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
TMEM170AGene function
What if the gene works
The TMEM170A gene helps cells shape the endoplasmic reticulum, a membrane network that makes and moves proteins. It also supports the membrane around the cell’s control center, helping cells stay organized.
Risk
What if the gene does not work
Milder to more severe variants in the TMEM170A gene can reduce TMEM170A activity to different degrees. This may disrupt normal shaping of the endoplasmic reticulum and nuclear envelope, changing membrane organization and, in some cases, nuclear pore formation.
Treatment
What does that mean for your treatment
For a pathogenic or loss-of-function variant in the TMEM170A gene, no TMEM170A-specific treatment or management approach is currently established.
Gene function
What if the gene works
Inside your cells, the TMEM170A gene helps shape membranes that organize everyday cell work. Its protein is especially important in a membrane network inside the cell and in the membrane that surrounds the nucleus. Knowing how the TMEM170A gene works in your cells helps explain how these structures stay orderly and connected.
The TMEM170A gene helps organize the endoplasmic reticulum, the membrane network that makes and moves many cell materials. It supports a balanced layout of flat sheets and narrow tubes within this network.
Its protein also supports the membrane around the nucleus, which holds your DNA. This helps keep that boundary well arranged during routine cell activity.
This gene helps cells form nuclear pores, the tiny openings in the membrane around the nucleus. These pores let needed messages and materials move in and out in a controlled way.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and help make up normal human diversity, such as differences in appearance, metabolism, or the way the body responds to environmental influences. Many variants do not have any noticeable effect and simply represent natural genetic variation. In some situations, however, a variant can change a gene’s function more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the TMEM170A gene can alter how much TMEM170A protein a cell makes or how well the protein folds, reaches the right membrane, and interacts with nearby proteins. In practice, this is how TMEM170A gene variants may affect protein function at the cellular level. Milder variants may leave some activity intact, while more severe variants can sharply reduce protein stability or stop production altogether.
How variants are linked to conditions
Current evidence suggests the TMEM170A gene does not yet have a broadly confirmed link to a specific inherited health condition, and research on health conditions linked to TMEM170A gene variants is still evolving. Anyone with a confirmed TMEM170A-related diagnosis should rely on guidance from their doctor or genetic counselor for interpretation in their own situation.
A variant is not necessarily a diagnosis
Genetic variants are a routine part 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 certain diagnosis, especially when several genes and environmental factors are involved. In some situations, however, a single well-characterized variant in a particular 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 TMEM170A gene. Anyone with concerns about their personal or family risk can speak with a doctor or genetic counselor.
Inheritance of TMEM170A variants
There is not yet a broadly confirmed disease inheritance pattern for the TMEM170A gene, so a single well-established answer to how TMEM170A gene variants are inherited is not currently in routine clinical use. The TMEM170A gene is located on an autosome, which means you inherit one copy from your mother and one copy from your father.
What does my TMEM170A result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific condition for the TMEM170A gene, though this understanding can change as research develops. If you have a specific TMEM170A 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 changes in the TMEM170A gene, labs usually analyze DNA from a blood sample, saliva, or cheek swab using a multigene panel or broader sequencing test; this process, often called TMEM170A genetic testing, reads the gene's code and compares it with the usual sequence. Results may show a benign variant, a variant of uncertain significance, or a pathogenic variant.
When should I consider getting a genetic test?
There is not yet a broadly established reason to order genetic testing specifically for changes in the TMEM170A gene. Testing decisions are usually based on your personal health history, symptoms, and family history, together with a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic result can be informative, but how much it reveals depends on the condition and the specific variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, shape how the body functions. For some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is best considered alongside other aspects of care. In other situations, a genetic result may give a clear answer. In areas like medication response, these results can help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Two people can take the same treatment, yet one may get stronger benefit while the other may notice less effect or more side effects, partly because their bodies absorb, break down, transport, or respond to the drug differently. These differences are common and are one reason medication response can vary from person to person.
What is Pharmacogenetics?
Pharmacogenetics studies how differences in genes can shape the way someone responds to medication. It examines gene and drug patterns to better explain why a treatment may work differently from one person to another. For many medicines, genes can affect how strongly a drug works or how the body handles it. This understanding can support treatment decisions that are better informed and more individualized. To explore this topic further, you can learn more in the LearnHub.
Drugs influenced by the TMEM170A gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding how medicines are chosen or used, so general medication questions, side effects, or other health concerns are best discussed with your doctor.