The ANKRD31 gene helps reproductive cells manage DNA changes during meiosis, the special cell division that makes sperm and eggs. If it does not work properly, chromosomes may not pair and repair as they should, which can lead to infertility, especially in males. Many variants are harmless, while a few may disrupt this process enough to affect sperm production. Unlike genes such as BRCA1 or APOE, the ANKRD31 gene is mostly discussed in fertility and genetics care rather than in everyday public conversations.
What is a gene?
A gene is a section of DNA that carries instructions your cells use to make molecules or manage processes in the body. Some genes provide the directions for making proteins, which are the working parts of cells. Other genes mainly help regulate when certain processes happen, 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. To go deeper into this topic, you can find more in the LearnHub.
Overview
ANKRD31Gene function
What if the gene works
The ANKRD31 gene helps organize key steps in meiosis, the cell division process that makes sperm and eggs. It supports chromosome pairing and repair of planned DNA breaks, which are needed for normal fertility.
Risk
What if the gene does not work
More disruptive variants in the ANKRD31 gene can impair egg or sperm formation, leading to infertility, including very low or absent sperm in males or primary ovarian insufficiency in females. Milder variants may cause later onset or less pronounced reproductive effects.
Treatment
What does that mean for your treatment
No ANKRD31-specific treatment or management approach is currently established for pathogenic or loss-of-function variants in the ANKRD31 gene.
Gene function
What if the gene works
Much of what the ANKRD31 gene does in the body happens while sperm and eggs are being made. It is most active during meiosis, the special cell division that halves the number of chromosomes for reproduction. Its protein mainly acts as an organizer, helping key cell machinery work in the right place and at the right time.
The ANKRD31 gene helps germ cells, the cells that make sperm and eggs, carry out meiosis. This special division prepares cells to pass along the right number of chromosomes.
Its protein acts like a scaffold, meaning it helps other proteins gather together. This lets the machinery for planned DNA exchange assemble at the right chromosome sites.
During meiosis, cells make carefully controlled DNA cuts so matching chromosomes can swap small pieces. The ANKRD31 gene helps set up these events, which supports accurate chromosome matching.
The exchange process supported by this gene helps chromosome pairs line up and stay connected during meiosis. That steady pairing helps cells sort chromosomes into future sperm or eggs.
What is a variant?
A genetic variant is a small difference in the DNA sequence of 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 have no noticeable effect and simply represent natural genetic variation. In some situations, however, a variant can change a gene’s function more clearly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the ANKRD31 gene can affect protein function by weakening how the protein folds or how well it binds partner proteins used in meiosis (the cell division that makes egg and sperm cells). More disruptive variants, including changes that shorten the protein, may sharply reduce stability or block these interactions, while some missense variants leave partial activity. This severity range can lead to milder or more pronounced problems controlling DNA breaks and repair in reproductive cells.
How variants are linked to conditions
Research on how ANKRD31 gene variants are linked to conditions is still developing. At present, the ANKRD31 gene does not yet have a broadly confirmed link to a specific health condition, and anyone with a diagnosis involving this gene should follow guidance from their doctor or genetic counselor rather than general information.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are frequent in the general population. Most do not directly affect health and instead reflect normal human variation. For many genes, having a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when several genes and environmental factors also play a role. In some situations, though, a single well-characterized 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 risks related to the ANKRD31 gene. For many living with an ANKRD31 change, the main issue is the genetic variant itself, while other influences on risk are still being studied.
Inheritance of ANKRD31 variants
ANKRD31-related conditions that have been described so far follow an autosomal recessive inheritance pattern. This means a person usually inherits one altered copy of the ANKRD31 gene from each parent, while parents with one altered copy are typically carriers. When both parents are carriers, each pregnancy has a 25% chance that the child will inherit both altered copies, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither altered copy. This is the main answer to how ANKRD31 variants are inherited in families.
What does my ANKRD31 result mean for my family?
For ANKRD31, family implications are usually discussed in a recessive pattern, which means close relatives may carry the same gene change even if they do not have symptoms. Brothers and sisters could also have the condition or be carriers, and adult relatives planning children may want to learn whether they carry the family’s ANKRD31 change. The exact impact can differ depending on the specific result and the condition linked to it.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for the ANKRD31 gene usually uses a blood sample, saliva, or a cheek swab. A laboratory reads the DNA code and compares it with the usual sequence to look for variants; results may identify a benign change, a variant of uncertain significance, or a variant linked to a health condition.
When should I consider getting a genetic test?
ANKRD31 testing may be considered during an evaluation for unexplained infertility, especially in men with no sperm seen in the semen or signs that sperm production is severely affected. The decision is usually made with a fertility specialist or genetic counselor, based on personal and family history.
A genetic result is only one part of your health story
A genetic result can provide useful insight, yet how much it reveals varies with the condition and the kind of variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, influence how the body functions. For some conditions, particularly those shaped by many genes, genetic information offers context rather than certainty and is most helpful when viewed alongside other parts of care. In other situations, a genetic result can give a clear answer. In areas like medication response, genetic results may also help put personal experiences in context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small differences in DNA can change how the body breaks down a drug, moves it through the body, or responds to it at its target, so the same treatment may work better for one person than for another. These inherited differences are common and can influence how much benefit someone gets from a medicine or how sensitive they are to side effects.
What is Pharmacogenetics?
Pharmacogenetics studies how genetic differences can affect the way a person responds to medication. It examines links between genes and drugs to help explain why the same treatment can work differently from one person to another. With many medicines, genes play a part in both how strongly a drug works and how the body processes it. This information can support more informed and more personalized treatment decisions. More on this topic is available in the LearnHub.
Drugs influenced by the ANKRD31 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding how medicines are chosen or used, so general questions about side effects, treatment changes, or ongoing symptoms are best discussed with your doctor.