The ANXA11 gene helps cells manage membranes and move materials inside the cell, which is especially important in long nerve cells. If it does not work properly, cell transport can become less stable and abnormal protein clumps may build up, which can contribute to some forms of amyotrophic lateral sclerosis (ALS), a nerve condition that affects muscle control, and a few other conditions. Many variants are harmless, while a few may change how the gene supports cell stress responses and communication.
What is a gene?
Genes are sections of DNA that carry instructions your cells use to make molecules or manage activities in the body. Some genes provide the directions for making proteins, which do much of the cell’s work. Others mainly regulate when certain processes take place, where they happen, and how active they are. Taken together, genes affect how the body grows and works, and they 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
ANXA11Gene function
What if the gene works
The ANXA11 gene helps make a protein that binds calcium and cell membranes. It supports membrane transport inside cells and helps cells divide in an orderly way.
Risk
What if the gene does not work
Variants in the ANXA11 gene are linked mainly to amyotrophic lateral sclerosis (ALS), which can cause muscle weakness and loss of movement, and rarely to muscle disease. Milder and more severe variants may change onset and features.
Treatment
What does that mean for your treatment
At present, no treatment or management approach linked specifically to a pathogenic or loss of function variant in the ANXA11 gene is established, so care is based on the person’s condition and symptoms. The ANXA11 gene is being studied in ALS and in some cancers as a possible biomarker or drug target, but this does not yet guide routine drug choices.
Gene function
What if the gene works
Inside your cells, the ANXA11 gene helps manage how membranes behave and how materials move from place to place. Its protein responds to calcium, a common cell signal, and attaches to membrane surfaces when needed. Understanding what the ANXA11 gene does in the body helps explain how cells stay organized during everyday activity and division.
The ANXA11 gene makes a protein that attaches to cell membranes when calcium levels rise. This helps cells organize membrane surfaces at the right time and place.
Its protein helps guide small membrane packages as they move inside the cell. This supports the controlled transport of proteins and other cell contents between cell compartments.
ANXA11 also helps during the last stage of cell division, when one cell separates into two. It supports the thin bridge between the two new cells so separation can finish in an orderly way.
What is a variant?
A genetic variant is a minor alteration in the DNA sequence of a gene. These changes are common and help create normal human diversity, including differences in appearance, metabolism, and how 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 how a gene functions more substantially and may contribute to or directly cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the ANXA11 gene often change how the annexin A11 protein folds, stays stable, or interacts with cell membranes and other proteins. Some ANXA11 gene variants make the protein more likely to clump inside cells, while others lower the amount of working protein, which helps explain how ANXA11 variants affect protein function. Milder variants may only partly disrupt these processes, while more severe variants can cause a larger loss of function and, in some families, are linked with earlier or more marked neurologic disease.
How variants are linked to conditions
Pathogenic variants in the ANXA11 gene are a rare cause of amyotrophic lateral sclerosis, or ALS, a condition that affects muscle strength. In clinical genetics, variants in the ANXA11 gene linked to amyotrophic lateral sclerosis are the main disease association. Some people with ALS caused by a variant in the ANXA11 gene also develop frontotemporal dementia. Separate studies have linked certain variants in the ANXA11 gene to sarcoidosis risk, but this reflects risk only, not a diagnosis.
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 instead represent normal human diversity. For many genes, having a variant associated with a condition indicates a possible link rather than a definite diagnosis, especially when several genes and environmental factors also 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 is not yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the ANXA11 gene. If ANXA11 runs in your family or a test found a change in this gene, a doctor or genetic counselor can help explain what it may mean for your personal risk.
Inheritance of ANXA11 variants
For families asking how ANXA11 gene variants are inherited, the best established pattern is autosomal dominant for ANXA11-related amyotrophic lateral sclerosis. This means one altered copy of the ANXA11 gene can be enough to cause the condition, and a parent carrying the variant can pass it to each child with a 50% chance. Men and women are affected and can pass the variant on equally, including from father to son.
What does my ANXA11 result mean for my family?
Some changes in the ANXA11 gene are linked to inherited nerve conditions in a dominant pattern, which means close relatives such as a parent, brother, sister, or child may also carry the same change. For many families, this means first-degree relatives may want to learn whether the result could be relevant to them. The exact meaning for relatives depends on the specific ANXA11 change and the condition linked to it.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for variants in the ANXA11 gene usually uses a blood or saliva sample. A lab reads the DNA code to look for changes in the ANXA11 gene and compares them with known findings. Results may show a variant linked to disease, a harmless variant, or a change whose meaning is still unclear.
When should I consider getting a genetic test?
Consider ANXA11 testing if you or close relatives have amyotrophic lateral sclerosis (ALS), especially if more than one family member is affected or ALS appears alongside dementia or muscle weakness. Testing can sometimes help confirm an inherited cause and clarify whether relatives may also carry the same gene change.
A genetic result is only one part of your health story
A genetic result may give useful insight, but what it can tell you varies by the condition and the type of variant. How the body functions over time is also shaped by factors like age, environment, lifestyle, and medical history. In some conditions, especially those affected by many genes, genetic information provides context rather than certainty and is most helpful when considered with the rest of a person’s care. In other situations, it may give a clear answer. For medication response, genetic results can also help put personal experiences in perspective.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. This helps explain why the same treatment works well for one person but less well for another, or why some people are more likely to notice side effects. Differences in how the body absorbs, breaks down, transports, or responds to a drug are common and can influence both benefit and sensitivity.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect the way a person responds to medications. It studies relationships between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medicines, genes influence both how strongly a drug works and how the body handles it. This information can support more informed, more individualized treatment decisions. More on this topic is available in the LearnHub.
Drugs influenced by the ANXA11 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in predicting how medicines work. If you have concerns about side effects, a new prescription, or how a treatment fits with your overall health, talk with your doctor.
History
ANXA11 entered the scientific literature as part of the annexin family, a group of genes studied for their shared structure and behavior in cells. In recent decades, awareness of this gene’s role has grown as researchers mapped it more precisely and compared it with related annexin genes. From these first observations, research expanded steadily, and ANXA11 later drew wider attention when variants in the ANXA11 gene were linked to amyotrophic lateral sclerosis and, in some families, sarcoidosis. These findings helped move ANXA11 from a mainly laboratory topic into clinical genetics. Over time, descriptions became more precise as newer DNA methods clarified which variants were most relevant in different conditions.