The ERAL1 gene helps mitochondria, the parts of cells that make energy, build the small protein-making machinery they need to work well. This gene plays an important role in keeping energy production steady in tissues with high demands, especially the inner ear and ovaries. If you carry a harmful variant in the ERAL1 gene, cells may not make energy as effectively, which can lead to hearing loss and, in some females, primary ovarian insufficiency.
What is a gene?
Genes are stretches of DNA that give your cells instructions to make molecules or regulate processes in the body. Some genes hold the information needed to produce proteins, which are the parts of cells that do much of the work. Other genes are used mainly to control when certain processes happen, where they take place, and how strongly they run. Taken together, genes influence how the body develops and functions, and they can also shape how you respond to food, stress, or medications. If you want to explore this subject more deeply, you can find additional information in the LearnHub.
Overview
ERAL1Gene function
What if the gene works
The ERAL1 gene helps build ribosomes inside mitochondria, the parts of cells that help make energy. This supports a steady energy supply, especially in tissues with high energy needs.
Risk
What if the gene does not work
Variants in the ERAL1 gene can impair mitochondrial protein production and are linked to Perrault syndrome, usually with hearing loss and, in females, ovarian insufficiency. Milder and more severe variants may affect when features appear and how marked they are.
Treatment
What does that mean for your treatment
No treatment or drug-choice approach specific to the ERAL1 gene is currently established. Care is based on a person’s symptoms and standard supportive management rather than the ERAL1 variant itself.
Conditions associated with ERAL1
Gene function
What if the gene works
Your cells need steady energy to keep organs and muscles working each day. In mitochondria, the ERAL1 gene helps build a small protein making machine that is needed for energy production. Understanding how the ERAL1 gene supports mitochondrial protein making helps explain its role in routine cell activity.
Inside mitochondria, the ERAL1 gene helps assemble the small ribosome unit used to make proteins. This gives cells the right machinery to read mitochondrial instructions in an orderly way.
ERAL1 binds 12S ribosomal RNA (a working RNA piece of the mitochondrial protein making machine). This helps protect that RNA and keeps the small ribosome unit stable as it forms.
By helping mitochondria make a small set of their own proteins, the ERAL1 gene supports everyday energy production. This helps cells meet routine demands across the body.
What is a variant?
A genetic variant is a small change in the DNA sequence within a gene. These changes are common and are part of normal human diversity, including 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 situations, however, a variant can change the function of a gene more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the ERAL1 gene can weaken the ERAL1 protein, change its shape, or make it less stable, so it binds mitochondrial ribosomal RNA less effectively and small mitochondrial ribosome assembly is impaired. In practical terms, how ERAL1 gene variants affect mitochondrial protein production depends on severity: milder variants may leave some activity, while more disruptive variants can cause a larger drop. In people with two harmful variants, this greater functional loss is linked to earlier or more pronounced features of Perrault syndrome.
How variants are linked to conditions
Pathogenic variants in both copies of the ERAL1 gene cause Perrault syndrome, a rare inherited condition. In medical genetics, ERAL1 gene variants are linked to Perrault syndrome with sensorineural hearing loss, and many affected females also have ovarian insufficiency or absent puberty. Features can vary from person to person, so hearing, fertility, and other symptoms are not always the same in every family.
A variant is not necessarily a diagnosis
Gene variants are a normal feature of human biology and are common across the general population. Most have no direct impact on health and simply reflect natural human diversity. For many genes, carrying a variant associated with a condition indicates a possible link rather than a definite diagnosis, especially when more than one gene and environmental factors are involved. In some situations, though, a single well-characterized variant in a specific 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 on specific factors that increase or reduce health risk related to the ERAL1 gene. In families with an ERAL1-related condition, risk is mainly shaped by the inherited gene change rather than lifestyle or everyday exposures.
Inheritance of ERAL1 variants
ERAL1-related conditions are inherited in an autosomal recessive pattern. This means a person usually inherits one ERAL1 variant from each parent, and parents who each carry one variant are often unaffected themselves. When both parents are carriers, each pregnancy has a 25% chance of a child inheriting both altered copies, a 50% chance of being a carrier, and a 25% chance of inheriting neither variant. In families asking how ERAL1 variants are inherited, this pattern means the condition can affect sons and daughters equally.
What does my ERAL1 result mean for my family?
For ERAL1, the best-known condition link follows a recessive inheritance pattern. This usually means parents can be healthy carriers, and brothers or sisters may also be carriers or, more rarely, have the condition if they inherited the changed gene from both parents. Other close relatives may also carry the same change, so the result can be relevant across the family.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for ERAL1 variants usually uses a blood sample or saliva. A lab reads the DNA sequence of the ERAL1 gene and compares it with the usual sequence to look for changes. Results may show a pathogenic variant, a likely pathogenic variant, a benign variant, or a variant of uncertain significance.
When should I consider getting a genetic test?
If hearing loss runs in your family, especially along with delayed puberty, early menopause, or infertility in women, testing the ERAL1 gene may be considered. It can also be included in a broader DNA test for unexplained inherited hearing loss or for signs of Perrault syndrome, a rare condition that affects hearing and ovarian function.
A genetic result is only one part of your health story
A genetic test result can provide useful insight, but how much it reveals varies by the condition and the kind of variant involved. Many other factors, including lifestyle, environment, age, and medical history, also shape how the body works over time. For some conditions, especially those influenced by many genes, genetic information adds 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, it can also help put individual experiences into perspective.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Some people break down a drug more slowly or more quickly than expected, so the same treatment may work better, work less well, or cause more side effects from one person to another. These differences are common and reflect how the body absorbs, processes, and responds to medication.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can affect the way people respond to medications. It studies gene and drug patterns 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 processes it. This information can support treatment decisions that are more informed and more personalized. You can read more about this topic in the LearnHub.
Drugs influenced by the ERAL1 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in medication response, so questions about medicines, side effects, or new symptoms are best discussed with your doctor, especially when starting, stopping, or changing treatment.