The LRRC63 gene helps sperm cells form and maintain the tail they need to swim. This gene plays an important role in normal sperm movement and male fertility. When both copies do not work properly, sperm may have absent, short, or misshapen tails and move poorly, which can lead to infertility.
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 directions for producing proteins, the parts of cells that do the work. Other genes mainly guide when certain processes happen, where they take place, and how strongly they run. Taken together, genes affect how the body develops and works, and they can also shape how you respond to food, stress, or medications. To go into this topic in more detail, you can find more in the LearnHub.
Overview
LRRC63Gene function
What if the gene works
The LRRC63 gene helps support the structure and movement of the sperm tail. This helps sperm swim normally and supports male fertility.
Risk
What if the gene does not work
More disruptive variants in the LRRC63 gene can cause male infertility, often with very low sperm movement and abnormal sperm tails. Milder variants may leave some function, so symptoms and severity can vary.
Treatment
What does that mean for your treatment
No treatment or management approach specific to the LRRC63 gene is currently established. Research on the LRRC63 gene mainly focuses on sperm tail function and some forms of male infertility, rather than on a targeted drug approach.
Gene function
What if the gene works
For male fertility, the LRRC63 gene helps sperm develop a tail that can move in a steady, coordinated way. It is most active in the testis, where it supports normal sperm tail development and swimming.
During sperm development, the LRRC63 gene helps assemble the tail-like structure that powers swimming. This supports a stable sperm tail shape and proper overall layout.
Its protein supports the tail’s inner framework, helping sperm bend in a controlled, rhythmic way. That motion helps sperm move forward through fluid.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and help shape normal human diversity, including differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not cause any noticeable effect and are simply part of natural genetic variation. In some cases, though, a variant can change how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
How variants influence the LRRC63 gene's function depends on the type and position of the DNA change. Some variants may alter the LRRC63 protein's shape or stability, making it less able to fold normally or interact with other cell proteins, while more disruptive variants can greatly reduce how much protein the cell makes or lead to an incomplete protein. Milder variants may leave partial activity, whereas more severe variants can cause a larger loss of function.
How variants are linked to conditions
Research on how variants in the LRRC63 gene are linked to health conditions is still developing. At this point, the LRRC63 gene does not yet have a broadly confirmed link to a specific medical condition, and anyone with a reported LRRC63 variant should interpret the result with their doctor or genetic counselor in the context of their personal and family history.
A variant is not necessarily a diagnosis
Genetic variants are a usual part of human biology and are widely found 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 also contribute. 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 risk related to the LRRC63 gene. People with concerns about what a LRRC63 gene change may mean for them or their family can speak with a doctor or genetic counselor.
Inheritance of LRRC63 variants
There is not yet a broadly confirmed, disease-specific Mendelian pattern for how LRRC63 gene variants are inherited, although this may become clearer as research develops. For families looking into how LRRC63 gene variants are inherited, LRRC63 is located on an autosome, not a sex chromosome. That means each person inherits one copy of the LRRC63 gene from each parent, and inheritance is generally not expected to differ between sons and daughters.
What does my LRRC63 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific condition for LRRC63, though this can become clearer as research develops. If you have a specific LRRC63 result and questions about what it could mean for your family, a doctor or genetic counselor can help explain it in the context of your personal and family history.
Genetic information
Genetic testing
How you find out about variants
To look for changes in the LRRC63 gene, a lab usually analyzes DNA from a blood or saliva sample using sequencing, which reads the gene’s DNA code. LRRC63 genetic testing may be done as part of a multi-gene panel, exome, or genome test, and the lab classifies any variant it finds as benign, pathogenic, or uncertain.
When should I consider getting a genetic test?
There is not yet a broadly established, LRRC63-specific reason for genetic testing in routine care. Testing decisions are usually based on your symptoms, family history, and whether the LRRC63 gene is being checked as part of a larger gene panel with a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic result can provide valuable insight, although how much it reveals varies based on the condition and the type of variant involved. How the body works over time is also shaped by many factors, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best viewed alongside other parts of care. In other situations, a genetic result may offer a clear answer. In areas such as medication response, genetic results 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. Small differences in DNA can change how the body breaks down a drug, how strongly it works, or how sensitive someone is to side effects. This is one reason the same medication may help one person a lot, help another only a little, or cause unwanted effects in someone else.
What is Pharmacogenetics?
Pharmacogenetics looks at how genetic differences can shape a person’s response to medication. By examining the relationship between genes and drugs, it helps explain why treatments may work differently from one person to another. For many medicines, genes influence how strongly a drug works or how the body handles it. This information can help support more informed, individualized treatment decisions. More detail on this topic is available in the LearnHub.
Drugs influenced by the LRRC63 gene
When should I seek medical advice?
There isn't yet a broadly confirmed role for this gene in medication response. Questions about side effects, trouble with a medicine, or changes in your health are best discussed with your doctor.