The ACE gene gives your body instructions to make angiotensin converting enzyme, which helps control blood pressure and fluid balance by changing one hormone signal into another. This gene helps your body keep blood vessels and salt balance in a healthy range. If the enzyme works poorly, blood pressure control can be disrupted, and rare severe variants can affect kidney development before birth. More common variants may slightly influence a person’s tendency toward high blood pressure or heart and kidney disease.
What is a gene?
A gene is a section of DNA that gives your cells instructions for making molecules or managing processes in the body. Some genes carry the information needed to produce proteins, the parts of cells that do the work. Other genes mainly help regulate when certain processes happen, where they happen, and how strongly they are active. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. For a more detailed look at this topic, you can learn more in the LearnHub.
Overview
ACEGene function
What if the gene works
The ACE gene helps control blood pressure and fluid balance. Its protein makes angiotensin II, a signal that tightens blood vessels, and breaks down bradykinin, a signal that relaxes them.
Risk
What if the gene does not work
More severe variants in the ACE gene can cause renal tubular dysgenesis, a rare condition that disrupts kidney development before birth. This often brings very low amniotic fluid and low blood pressure, while milder variants may cause less severe effects.
Treatment
What does that mean for your treatment
For pathogenic variants in the ACE gene, no treatment or drug selection approach tailored to the gene is currently established in clinical guidelines. ACE is a major drug target in cardiovascular medicine, but that reflects drugs acting on the enzyme, not a treatment plan designed around inherited ACE variants.
Conditions associated with ACE
Gene function
What if the gene works
Your body uses the ACE gene to help manage blood pressure and fluid balance from moment to moment. It does this by making an enzyme that adjusts key signals in the blood. Understanding how the ACE gene helps control blood pressure also shows how it supports steady circulation during everyday life.
The ACE gene makes an enzyme that turns angiotensin I (a starter signal in the blood) into angiotensin II (a signal that tightens blood vessels). This helps your body raise or steady blood pressure when needed.
Angiotensin II also tells the body to hold on to more sodium and water. This supports normal blood volume and helps keep circulation steady when you stand, walk, or exercise.
ACE also breaks down bradykinin (a signal that helps blood vessels relax). By reducing this signal, the ACE gene helps fine tune how wide or narrow blood vessels are at a given moment.
What is a variant?
A genetic variant is a minor change in a gene’s DNA sequence. These changes are common and are part of normal human diversity, including differences in appearance, metabolism, or the way the body reacts to environmental influences. Many do not have any noticeable effect and simply represent natural genetic variation. Sometimes, though, a variant can change how a gene works more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
ACE gene variants can change how much protein a cell makes, how well the protein folds, and whether it reaches the cell surface. The way ACE gene variants affect enzyme activity ranges from mild to severe: the common insertion/deletion variant often shifts ACE levels, while more disruptive variants can greatly reduce or eliminate activity. When both gene copies carry severe variants, this loss of function is linked to earlier and more severe problems with kidney development before birth.
How variants are linked to conditions
Rare pathogenic variants in the ACE gene can cause renal tubular dysgenesis, a condition that affects kidney development before birth and can confirm the diagnosis when present in both copies of the gene. Common ACE gene variants linked to conditions in population studies have also been associated with modest differences in the risk of high blood pressure and some heart or kidney conditions. These common variants may influence risk, but they do not determine whether someone will develop disease.
A variant is not necessarily a diagnosis
Variants are a usual feature of human biology and are widely found across the population. Most do not directly affect health and instead reflect normal human variation. For many genes, having a variant associated with a condition points to a possible link, not a definite diagnosis, particularly when several genes and environmental influences also play a role. In certain situations, though, one well-characterized variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
ACE changes are not usually strong on their own, and there is not broadly confirmed evidence that specific factors clearly increase or reduce risk because of the ACE gene itself. For most people, overall risk is shaped much more by common factors like blood pressure, smoking, body weight, exercise, and salt intake than by ACE alone.
Inheritance of ACE variants
For confirmed ACE-related genetic disease, how are variants of the ACE gene inherited is best answered as autosomal recessive. This means a person usually inherits one nonworking copy of the ACE gene from each parent, and the parents are often healthy carriers. With each pregnancy, two carrier parents have a 25% chance of having an affected child, a 50% chance of having a carrier child, and a 25% chance of having a child without the familial variant. Common ACE gene changes linked to traits such as blood pressure do not follow this single-gene pattern.
What does my ACE result mean for my family?
ACE is linked to a rare inherited kidney condition that follows a recessive pattern. For family members, this usually means parents may be healthy carriers, and brothers or sisters could also be affected or be carriers. Close relatives may want to learn whether the same ACE change runs in the family, especially when there is a history of severe kidney problems beginning before or around birth.
Genetic information
Genetic testing
How you find out about variants
A blood or saliva test for ACE gene variants looks for changes in the ACE gene. ACE genetic testing can show whether you carry a variant, often as part of a broader inherited risk panel. Your DNA is compared with a reference sequence, and any finding is classified by its likely health impact.
When should I consider getting a genetic test?
Testing for the ACE gene may be considered when a baby or fetus has signs of a very rare inherited problem with kidney development, especially if there is a family history or parents are related by blood. For common issues like high blood pressure or heart disease, ACE testing is not usually part of routine care.
A genetic result is only one part of your health story
A genetic result can provide useful insight, but how much it explains depends on the condition and the specific type of variant. Over time, many factors shape how the body works, including lifestyle, environment, age, and medical history. In some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best considered together with other parts of care. In other situations, a genetic result may give 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 your body responds 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. In part, this is because inherited differences can change how the body absorbs, breaks down, transports, or responds to a drug. These differences are common and can influence both how well a medicine works and how sensitive a person is to it.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic variation can affect a person’s response to medication. It studies the relationship 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 handles it. This information can support more informed, more individualized treatment decisions. More detail on this topic is available in LearnHub.
Drugs influenced by the ACE gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices, so questions about side effects, blood pressure treatment, or other health concerns are best discussed with your doctor. Studies have looked at ACE and how some people respond to blood pressure medicines, but this has not become routine, guideline-based care.
History
Research on the ACE gene grew out of mid 20th century work on blood pressure control, when scientists were identifying the body’s renin angiotensin system. In the 1970s and 1980s, studies of angiotensin converting enzyme helped lead to ACE inhibitor medicines, which changed treatment for high blood pressure and heart failure. Building on this early work, scientists identified and mapped the ACE gene, linking a well known insertion or deletion pattern to differences in enzyme levels. That finding drew wide interest because it connected a common gene variant with everyday health traits and, later, with athletic performance research. Over time, scientists’ understanding of the gene’s function has changed, but its place in cardiovascular medicine has remained important.