The ACE2 gene makes a protein on the surface of many cells that helps control blood pressure and supports heart, kidney, and lung function. If it does not work properly, these body systems may be harder to regulate. ACE2 became widely known during the COVID-19 pandemic because SARS-CoV-2 uses the ACE2 protein as a doorway to enter cells. That public attention made the gene a common topic in health news and everyday conversation.
What is a gene?
A gene is a stretch of DNA that carries instructions your cells use to make molecules or regulate activities in the body. Some genes provide the information needed to produce proteins, the parts of cells that do the work. Others mainly help determine when certain processes happen, where they take place, and how active they are. Together, genes affect how the body develops and functions, and they can also influence how you respond to food, stress, or medicines. For a deeper look at this topic, you can find more in the LearnHub.
Overview
ACE2Gene function
What if the gene works
The ACE2 gene helps control blood pressure, fluid balance, and blood vessel tone. Its protein breaks down a hormone signal that would otherwise tighten blood vessels too much.
Risk
What if the gene does not work
Depending on the variant, the ACE2 gene may work less well or lose function more fully. This can reduce conversion of angiotensin II into angiotensin-(1-7), shifting cell signaling that helps balance blood vessel tone, fluid levels, and inflammation.
Treatment
What does that mean for your treatment
For pathogenic or loss-of-function variants in the ACE2 gene, no ACE2-specific treatment or management approach is currently established. ACE2 is being studied as a drug target and biomarker, especially in COVID-19 and heart and blood vessel research, but this has not led to guideline-based treatment choices for carriers.
Gene function
What if the gene works
In day to day life, the ACE2 gene helps your body finely adjust blood pressure, fluid balance, and how tightly blood vessels narrow. It does this by making a protein that reshapes key hormone signals at the cell surface. Understanding the ACE2 gene’s function helps explain how the heart, kidneys, and lungs stay in balance.
The ACE2 gene makes a protein on the cell surface that cuts angiotensin II (a body signal that tightens blood vessels). This lowers that tightening signal and creates gentler signals that help vessels stay more relaxed.
By adjusting these vessel signals, the ACE2 gene helps your body keep blood pressure in a healthy range. It supports steady blood flow so organs receive what they need from moment to moment.
ACE2 activity also helps guide how the body handles salt and water. This is part of how the ACE2 gene helps control blood pressure and fluid balance across the heart, kidneys, and other tissues.
What is a variant?
A genetic variant is a small change in a gene’s DNA sequence. These changes are common and help account for normal human diversity, such as differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not have any noticeable effect and simply represent natural genetic variation. In some cases, though, a variant can change how a gene functions to a greater extent and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Changes in the ACE2 gene can alter how ACE2 protein is made, folded, or displayed on the cell surface. This helps explain how variants in the ACE2 gene affect protein function: some missense variants cause small shifts in stability or binding, while more severe truncating or splice variants can leave little or no working protein. The functional impact can range from mild reduction in activity to marked loss of normal cellular interactions.
How variants are linked to conditions
The ACE2 gene does not yet have a broadly confirmed link to a specific inherited condition, and research on ACE2 gene variants and health conditions is still developing. If you have a reported ACE2 gene variant or an ACE2-related diagnosis, your doctor or genetic counselor can explain what that result means for you.
A variant is not necessarily a diagnosis
Gene variants are a normal part of human biology and are widely found in the general population. Most have no direct impact on health and simply reflect natural human diversity. In many genes, carrying a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when several genes and environmental factors both contribute. In some situations, though, a single well-characterized variant in a particular gene can be enough to confirm a diagnosis.
Are there things that can increase or change my risk?
There is not yet broadly confirmed evidence that specific everyday factors clearly increase or reduce health risk specifically because of the ACE2 gene. ACE2 has been studied in areas such as infection risk and heart and blood vessel health, but personal risk still depends on many other genes, age, sex, and overall health.
Inheritance of ACE2 variants
For most health findings linked to the ACE2 gene, there is not yet a broadly confirmed Mendelian pattern that applies in a clear, disease-specific way, so the inheritance of the ACE2 gene variants is still being defined as research grows. The ACE2 gene is located on the X chromosome, which means inheritance can differ between males and females. Children receive an X chromosome from their mother, while daughters also receive an X chromosome from their father. Because of this X-linked location, a variant in the ACE2 gene can be passed from either parent in different ways depending on whether the child is male or female.
What does my ACE2 result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific condition for ACE2 that is used in routine patient care. If you have a specific ACE2 result and want to understand what it could mean for relatives, a doctor or genetic counselor can explain it in the context of your family history and the exact finding.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for the ACE2 gene usually uses a blood sample or saliva to read the gene’s DNA sequence and look for variants. This kind of ACE2 genetic testing can identify whether a specific change is present, but the result often needs to be interpreted alongside personal and family history.
When should I consider getting a genetic test?
There is not yet a broadly established, ACE2-specific medical reason for genetic testing in routine care. Testing decisions are best made with a doctor or genetic counselor based on your symptoms, medical history, and family history.
A genetic result is only one part of your health story
A genetic test result can provide useful insight, but how informative it is depends on the condition and on the kind of variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, also influence how the body functions. For some conditions, especially those shaped by many genes, genetic information offers context rather than certainty and is best understood 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 people respond to medicines. Some people break down or transport a drug differently, so the same treatment may work better for one person, have less effect in another, or cause more side effects. These differences are common and are one reason medication response can vary from person to person.
What is Pharmacogenetics?
Pharmacogenetics looks at how differences in a person’s genes can shape their response to medications. By studying patterns between genes and drugs, it helps explain why the same treatment can work differently in different people. For many medicines, genes can affect how strongly a drug works or how the body handles it. This information can support more informed, more individualized treatment decisions. You can read more about this topic in the LearnHub.
Drugs influenced by the ACE2 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 symptoms, treatment, or side effects are best discussed with your doctor. Research on the ACE2 gene has looked at possible links with blood pressure medicines and COVID-19, but these findings are not used routinely to guide care.
History
Researchers identified the ACE2 gene in 2000 while studying enzymes involved in blood pressure control. Its profile rose sharply during the 2003 SARS outbreak, when scientists showed that the virus uses ACE2 to enter human cells. Building on this early work, scientists uncovered more about the gene as international research expanded. Public conversations shifted again during the COVID-19 pandemic, when ACE2 became widely discussed in news coverage and medical reporting. This attention helped many people become familiar with how genes can shape infection research, even though ACE2 had been studied for years before. The history of the ACE2 gene is closely tied to major advances in virus research and global public health.