The GDF15 gene helps your body make a stress signal that can lower appetite and shape nausea, especially during illness or pregnancy. If this gene does not work as expected, some people may have differences in body weight regulation or a higher chance of severe nausea and vomiting in pregnancy. Understanding this gene can help clarify why pregnancy sickness and appetite can vary so much from one person to another.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or guide activities in the body. Some genes provide the information needed to make proteins, the parts of cells that do much of the work. Others mainly regulate when certain processes take place, where they happen, 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. For a more detailed look at this topic, you can find additional information in the LearnHub.
Overview
GDF15Gene function
What if the gene works
The GDF15 gene helps make a signaling protein that rises when cells are under strain. It helps the body adjust appetite, energy balance, and responses to stress, illness, and tissue injury.
Risk
What if the gene does not work
Milder to more severe variants in the GDF15 gene can reduce or alter the cell stress signal GDF15 to different degrees. This may weaken signaling between stressed tissues and its receptor, GFRAL, on specific nerve cells.
Treatment
What does that mean for your treatment
No treatment or drug choice is currently guided specifically by pathogenic or loss-of-function variants in the GDF15 gene. GDF15 is being studied as a blood biomarker in mitochondrial disease and as a possible drug target in appetite, weight loss, and cancer cachexia research.
Gene function
What if the gene works
The GDF15 gene helps your body send out a chemical signal when cells are under strain. That signal is part of a normal response to illness, hard exercise, low oxygen, or other physical stress. Understanding what the GDF15 gene does in the body also helps explain its role in appetite and energy balance.
Cells can raise GDF15 levels and release its protein into the blood when the body is under strain. This gives the body a clear message that conditions have changed and extra support may be needed.
GDF15 helps send stress related messages to a control center in the lower brain. This can temporarily lower hunger and shift energy use so the body can focus on getting through a demanding period.
By influencing hunger signals, GDF15 takes part in day to day energy balance. Its effect works alongside many other body signals that help match food intake to the body’s needs.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and contribute to normal human diversity, including differences in appearance, metabolism, and how the body responds to environmental influences. Many variants do not cause any noticeable effect and simply represent natural genetic variation. In some situations, though, a variant changes how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Many GDF15 gene variants change how much GDF15 protein a cell makes, how well it folds, or how efficiently it is released, which helps explain how GDF15 gene variants affect protein secretion and signaling. Milder variants may only partly lower protein stability or weaken binding to its receptor, while more severe variants can create a shortened protein or leave very little active protein outside the cell. This range can lead to partial loss of activity in some people and near-complete loss in others.
How variants are linked to conditions
GDF15 does not yet have a broadly confirmed link to a specific health condition, though research on how GDF15 gene variants are linked to conditions is still developing. If you have a confirmed variant in the GDF15 gene, your doctor or genetic counselor can explain what it may mean in the context of your own health and family history.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widespread in the general population. Most do not have a direct effect on health and simply reflect natural human variation. For 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 are involved. 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 clearly increase or reduce health risk related to the GDF15 gene itself. If a GDF15 change is found on testing, a doctor or genetic counselor can help explain what it may mean alongside family history, symptoms, and other health factors.
Inheritance of GDF15 variants
There is not yet a broadly confirmed Mendelian pattern for how GDF15 gene variants are inherited in relation to a specific GDF15 related condition, because most reported GDF15 findings are risk associations rather than a single inherited syndrome. Current evidence suggests that how GDF15 gene variants are inherited may depend on the particular variant and the health trait being studied. The GDF15 gene is located on chromosome 19, which is an autosome, so you inherit one copy from each parent.
What does my GDF15 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to one specific condition for GDF15, though research in this area is still developing. If you have a specific GDF15 result and want to understand what it could mean for your relatives, a doctor or genetic counselor can help explain it in the context of your family's health history.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a variant in the GDF15 gene, a clinician can use genetic testing for GDF15 variants on a blood or saliva sample. A lab reads the gene’s DNA code and compares it with the usual sequence to look for changes. Results may identify a variant, show none was found, or find a change whose meaning is still unclear.
When should I consider getting a genetic test?
There is not yet a broadly established GDF15-specific medical reason for genetic testing. Decisions about testing are usually best made with a doctor or genetic counselor, based on your symptoms, family history, and the health question being explored.
A genetic result is only one part of your health story
Genetic results can offer useful insight, but how much they reveal varies depending on the condition and the type of variant involved. Over time, how the body functions is also shaped by factors such as 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 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. Two people can take the same treatment at the same dose, yet one may get good benefit while the other notices less effect or more side effects. Part of the reason is that inherited differences can change how the body breaks down, moves, or responds to a drug. This kind of variation is common and helps explain why medication response is not the same for everyone.
What is Pharmacogenetics?
Pharmacogenetics is the area of study that examines how inherited genetic differences affect the way people respond to medicines. It focuses on the relationship between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medications, genes influence both how the body processes a drug and how strong its effects may be. This information can support more informed and more personalized treatment decisions. More about this topic is available in the LearnHub.
Drugs influenced by the GDF15 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or dose. Questions about side effects, treatment response, or other health concerns are best discussed with your doctor.
History
The GDF15 gene entered medical research in the late 1990s, when several groups identified the same gene in different settings and gave it different names, including MIC-1, NAG-1, and PLAB. From these first observations, research expanded steadily, and scientists recognized that these separate findings pointed to one shared gene. Scientific classifications changed as researchers learned more about the gene, and GDF15 became the standard name. This naming history reflects a common pattern in genetics, where one gene is discovered more than once before the field settles on a single label. Over time, the GDF15 gene became better known in cancer, metabolism, and inflammation research, which helped place it more firmly in modern medical genetics.