The ACADL gene helps your cells break down certain long-chain fats to make energy, especially between meals, during illness, or with exercise. This gene helps your body use fat as backup fuel when sugar is low. If the ACADL gene does not work properly, you may have trouble meeting energy needs, which can cause low blood sugar, muscle weakness or pain, and sometimes liver or heart problems. Harmful variants in this gene cause a rare inherited condition that often begins in infancy or childhood.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or regulate activities in the body. Some genes provide the directions for producing proteins, which are the working parts of cells. Other genes mainly control 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 influence how you respond to food, stress, and medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
ACADLGene function
What if the gene works
The ACADL gene helps cells break down long-chain fats to make energy, especially between meals. This supports the heart, liver, and muscles.
Risk
What if the gene does not work
Milder to more severe variants in the ACADL gene can reduce how well cells break down certain long chain fats in mitochondria, the cell’s energy centers. This lowers long chain fat processing and can limit energy production, especially during fasting.
Treatment
What does that mean for your treatment
No ACADL-specific treatment or management approach is currently established in clinical guidelines.
Gene function
What if the gene works
Your body uses the ACADL gene to help turn certain fats into usable energy. This matters most when you are sleeping, between meals, or being active. Tissues with high energy needs, like the heart, liver, and muscles, rely on this process every day.
The ACADL gene helps your cells start breaking down certain longer fat molecules inside mitochondria (the parts of cells that make energy). This is a key step in how your body turns fat into energy.
Its protein passes energy from those fats into the cell’s main energy making process. This helps support organs that need a steady fuel supply, especially the heart, liver, and muscles.
When food is not coming in, your body can shift toward using stored fat for fuel. The ACADL gene supports this normal change during sleep, exercise, and the time between meals.
What is a variant?
A genetic variant is a small alteration in the DNA sequence of a gene. These changes are common and help shape normal human diversity, including differences in appearance, metabolism, or the way 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 more substantially change how a gene functions and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the ACADL gene can alter the enzyme’s shape, stability, or ability to bind the fat molecules it acts on. As a result, cells may break down certain long-chain fats less efficiently in mitochondria, the parts of cells that help release energy. How ACADL gene variants affect enzyme activity varies: milder variants may leave partial function, while more severe variants can lead to very little working enzyme.
How variants are linked to conditions
Current evidence does not yet show a broadly confirmed link between the ACADL gene and one specific inherited condition, so information about ACADL gene variants and health conditions is still evolving. If you have a reported change in the ACADL gene or an ACADL-related diagnosis in your records, your doctor or genetic counselor can explain what that finding means in the context of your own health.
A variant is not necessarily a diagnosis
Genetic variants are a routine feature of human biology and are widely found across the population. Most do not directly affect health and instead represent natural human variation. For many genes, having a variant associated with a condition points to a possible link rather than a certain diagnosis, particularly when several genes and environmental influences play a role. In some situations, though, one well-understood variant in a particular 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 ACADL gene. Anyone with concerns about personal or family risk can speak with a doctor or genetic counselor.
Inheritance of ACADL variants
Information on how ACADL gene variants are inherited centers on the rare ACADL-related condition, which is generally passed down in an autosomal recessive pattern. This means a child usually inherits one ACADL gene variant from each parent. Parents who each carry one variant often do not have the condition themselves. With each pregnancy, there is a 25% chance the child inherits both variants and has the condition, a 50% chance the child is a carrier, and a 25% chance the child inherits neither familial variant.
What does my ACADL result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific condition for ACADL, though this understanding can change as research develops. If you have a specific ACADL result and questions about what it could mean for your family, a doctor or genetic counselor can give guidance tailored to your situation.
Genetic information
Genetic testing
How you find out about variants
ACADL genetic testing looks for variants by reading the DNA sequence in a blood, saliva, or cheek swab sample. It can confirm whether a person carries a specific ACADL variant and may help clarify the genetic cause of symptoms or an abnormal newborn screening result.
When should I consider getting a genetic test?
There is not yet a broadly established ACADL-specific reason to get genetic testing. Testing decisions are usually made with a doctor or genetic counselor based on symptoms, newborn screening findings, and family history.
A genetic result is only one part of your health story
Genetic results can be informative, but what they reveal depends on the condition and on the type 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 affected by many genes, genetic information offers context rather than certainty and is best considered alongside other parts of care. In other situations, a genetic result may give a clear answer. In areas like medication response, these 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 and have different results because their bodies may break down, move, or respond to a drug in different ways. This is common and can influence how well a medicine works or how sensitive someone is to side effects.
What is Pharmacogenetics?
Pharmacogenetics examines the ways genetic differences affect how people respond to medications. It studies gene drug relationships to help explain why the same treatment can work differently in different people. For many drugs, genes influence both how the body handles a medicine and how strong its effects are. This information can support treatment decisions that are more informed and more tailored to the individual. More detailed information on this subject is available in the LearnHub.
Drugs influenced by the ACADL gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in how people respond to medicines. If you have side effects, questions about a treatment, or concerns about your health, talk with your doctor, who can look at the full picture.