The ANG gene helps make angiogenin, a protein that supports new blood vessel growth and helps nerve cells cope with stress. This gene plays an important role in keeping cells working during strain, so if it does not work well, some cells may be less able to survive stress. Most variants in this gene have little effect, but a small number are linked to a higher chance of amyotrophic lateral sclerosis, and sometimes Parkinson disease.
What is a gene?
Within your DNA, a gene is a stretch that carries instructions your cells use to make molecules or regulate processes in the body. Some genes provide the directions for making proteins, the working parts of cells. Others mainly guide when certain processes happen, where they take place, and how active they are. Taken together, genes affect how the body develops and works, and they can also influence how you respond to food, stress, or medications. More detail on this topic is available in the LearnHub.
Overview
ANGGene function
What if the gene works
The ANG gene helps make angiogenin, a protein that supports new blood vessel growth. It also helps cells manage stress and supports the health of some nerve cells.
Risk
What if the gene does not work
Some variants in the ANG gene are linked to amyotrophic lateral sclerosis and, less often, Parkinson disease. Effects can range from milder to more severe, which may influence whether symptoms appear, when they begin, and how pronounced they are.
Treatment
What does that mean for your treatment
No ANG-specific treatment or drug choice guideline is currently established for pathogenic variants in the ANG gene. The ANG gene is being studied as a biomarker and possible drug target in some cancers and nerve cell conditions, but this has not yet changed routine care.
Gene function
What if the gene works
Healthy tissues need a steady blood supply and a constant stream of new proteins. The ANG gene supports both by guiding new blood vessel growth and helping cells build the machinery they use to make proteins. Understanding this role makes it easier to see how the ANG gene helps new blood vessels grow during normal repair and upkeep.
The ANG gene helps cells that line blood vessels move, grow, and organize into new vessels. This supports healing and helps tissues keep a healthy supply of oxygen and nutrients.
Inside the cell center, its protein helps switch on ribosomal RNA (part of the machinery that makes proteins). This helps growing or repairing cells build the tools they need for everyday work.
Its protein trims certain RNA molecules (working copies of genetic instructions) in a controlled way. This helps cells fine tune protein production during normal growth and changing daily demands.
What is a variant?
A genetic variant is a minor difference in a gene’s DNA sequence. These differences are common and help shape normal human variation, including traits such as appearance, metabolism, and the way the body responds to environmental influences. Many do not cause any noticeable effect and are simply part of natural genetic diversity. Sometimes, though, a variant changes how a gene works more substantially and can contribute to, or directly cause, a genetic condition.
Genetic variants
What if the gene does not work
When specialists study how variants influence the ANG gene's function, they often find changes that make the angiogenin protein less stable, harder for cells to release, or less able to cut RNA and enter the cell nucleus. Some variants are milder and leave partial activity. More disruptive variants can cause a larger loss of function by altering protein folding or weakening key interactions inside the cell.
How variants are linked to conditions
Pathogenic variants in the ANG gene can cause a rare inherited form of amyotrophic lateral sclerosis (ALS). This finding can support or confirm the genetic diagnosis in a person with ALS symptoms. Most people with ALS do not have an ANG variant, and common ANG changes are not used to predict who will develop the condition.
A variant is not necessarily a diagnosis
Gene variants are a usual part of human biology and are widely seen in the general population. Most do not have a direct effect on health and instead represent natural human variation. For many genes, carrying a variant associated with a condition indicates a possible link rather than a confirmed diagnosis, especially when several genes and environmental factors also contribute. 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 ANG gene. Anyone with concerns about personal or family risk can talk with a doctor or genetic counselor for advice based on their own history.
Inheritance of ANG variants
There is not yet a broadly confirmed disease specific ANG gene inheritance pattern for people carrying ANG variants, because most reported links have been in research settings and may influence risk rather than define a single inherited condition. ANG is located on chromosome 14, which is an autosome. That means each person inherits one copy of the ANG gene from each parent, and either copy can be passed on to children.
What does my ANG result mean for my family?
Some changes in the ANG gene have been linked to an inherited form of amyotrophic lateral sclerosis, or ALS, that can run in families in a dominant pattern. This means close relatives, such as parents, brothers, sisters, and children, may also carry the same gene change and could choose to learn more about family testing. The family impact can vary because not everyone with an ANG change develops symptoms.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for variants in the ANG gene usually uses a blood or saliva sample. During testing for ANG gene variants, a lab reads the gene’s DNA sequence and compares any changes with trusted medical databases to help classify them as benign, uncertain, or likely disease causing.
When should I consider getting a genetic test?
There is not yet a broadly established, ANG-specific reason for genetic testing in routine care. Testing decisions are usually based on your symptoms and family history, ideally with a doctor or genetic counselor.
A genetic result is only one part of your health story
Genetic findings can provide valuable insight, yet how much they reveal varies based on the condition and the type of variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, influence how the body functions. For some conditions, especially those shaped by many genes, genetic information provides context rather than certainty and is most useful when considered alongside other parts of care. In other situations, a genetic result can offer a clear answer. In areas such as medication response, genetic results can also help place personal experiences in context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how your body responds to medicines. Small differences in DNA can change how a drug is absorbed, broken down, moved through the body, or how strongly it acts on its target. This helps explain why the same medication may work well for one person but less well for another, or why some people are more sensitive to side effects. These differences are common and are one part of why treatment response varies from person to person.
What is Pharmacogenetics?
Pharmacogenetics examines how inherited genetic differences can affect the way a person responds to medications. By studying patterns between genes and drugs, it helps explain why the same treatment may work differently from one person to another. For many medicines, genes can influence both how strongly a drug works and how the body handles it. This information can support more informed and more individualized treatment decisions. If you want to explore the topic further, you can learn more in the LearnHub.
Drugs influenced by the ANG gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or dose, so any concerns about medicines, side effects, or changes in your health are best discussed with your doctor.
History
Researchers identified angiogenin in the mid 1980s while studying proteins released by human tumor cells, and this work led to recognition of the ANG gene. Early interest centered on its role in the growing field of blood vessel research, which was becoming important in cancer biology. From these first observations, research expanded steadily. In the 2000s, studies linked rare ANG gene variants to some people with amyotrophic lateral sclerosis, also called ALS, which brought the gene into neurology research as well. That shift broadened scientific interest and showed how one gene could matter in more than one area of medicine. Today, the ANG gene is mainly remembered as part of the early wave of genes that connected basic lab discovery with later genetic studies in human disease.