The ABRAXAS1 gene helps your cells repair damaged DNA, especially when the DNA strand breaks. If you carry a harmful variant in this gene, cells may not fix that damage as well, so extra DNA changes can build up over time. In medicine, this gene is important because it works closely with the BRCA1 gene in the body’s response to cell damage. Some inherited variants in the ABRAXAS1 gene have been linked to a higher risk of breast cancer, although risk can vary between families.
What is a gene?
Genes are sections of DNA that give your cells instructions for making molecules or guiding processes in the body. Some carry the information needed to produce proteins, which are the parts of cells that do much of the work. Others mainly regulate the timing, place, and level of activity of certain processes. Together, genes affect how the body develops and functions, and they can also shape your response to food, stress, or medications. You can find more detailed information on this topic in the LearnHub.
Overview
ABRAXAS1Gene function
What if the gene works
The ABRAXAS1 gene helps your cells respond to DNA damage. Its protein works with other repair proteins to help fix broken DNA and support chromosome stability.
Risk
What if the gene does not work
Milder variants in the ABRAXAS1 gene may only partly weaken how cells recruit BRCA1 to damaged DNA. More severe variants can more clearly disrupt DNA repair and cell cycle checks, making the repair response less coordinated.
Treatment
What does that mean for your treatment
No ABRAXAS1-specific treatment or management approach is currently established in clinical guidelines. In cancer research, variants in the ABRAXAS1 gene are being studied as markers of reduced DNA repair, which may help guide future use of PARP inhibitors, a group of targeted cancer drugs, but this is not yet standard care.
Gene function
What if the gene works
Every day, your cells pick up small injuries in their DNA from normal metabolism, sunlight, and other routine stresses. ABRAXAS1 helps organize part of the response to this damage. Its protein acts as a connector, bringing key repair proteins together so cells can protect the genetic instructions they need to grow and divide.
ABRAXAS1 helps bring BRCA1 and other repair proteins together into a working group inside the cell. This organized setup supports accurate handling of DNA breaks.
Its protein helps guide that repair group to spots where DNA has been damaged. This is part of how the ABRAXAS1 gene helps repair DNA during normal cell life.
ABRAXAS1 supports damage checkpoints, which are brief safety pauses before a cell keeps dividing. This gives repair steps time to finish before DNA is copied or passed on.
What is a variant?
Within a gene, a genetic variant is a small difference in the DNA sequence. These differences are common and are part of normal human diversity, such as variation in appearance, metabolism, or the way the body responds to environmental influences. Many have no noticeable effect and simply represent natural genetic variation. In some situations, though, a variant can change gene function more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the ABRAXAS1 gene can weaken the protein, make it less stable, block its entry into the nucleus, or reduce binding to BRCA1 and other DNA repair partners. When looking at how ABRAXAS1 gene variants affect DNA repair, smaller changes may partly reduce this work, while more severe variants can cut the protein short or disrupt splicing (the cell’s editing of RNA instructions). That can impair assembly of the repair complex at damaged DNA sites.
How variants are linked to conditions
Research on how variants in the ABRAXAS1 gene are linked to health conditions is still developing, and this gene does not yet have a broadly confirmed link to one specific condition. If you have a confirmed change in the ABRAXAS1 gene, the most useful next step is to follow the advice of your doctor or genetic counselor, who can interpret it in the context of your personal and family history.
A variant is not necessarily a diagnosis
Variants in genes are a normal part of human biology and are widespread in the general population. Most of these variants do not have a direct effect on health and simply contribute to natural human diversity. 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, however, a single well characterized variant in a particular 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 clearly increase or reduce risk related to the ABRAXAS1 gene. If you have an ABRAXAS1 change and want to understand your personal cancer risk, a doctor or genetic counselor can help put your family history and test result into context.
Inheritance of ABRAXAS1 variants
There is not yet a broadly confirmed, disease-specific Mendelian pattern for how variants of the ABRAXAS1 gene are inherited, even though the gene has been studied in hereditary cancer risk. Current evidence suggests that some ABRAXAS1 gene changes may run in families, but the exact inheritance picture is still being clarified. For people looking into how variants of the ABRAXAS1 gene are inherited, one solid point is that ABRAXAS1 is located on chromosome 4, which is an autosome. That means you inherit one copy of the ABRAXAS1 gene from each parent.
What does my ABRAXAS1 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific condition for ABRAXAS1, though this understanding can change as research develops. If you have a specific ABRAXAS1 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
ABRAXAS1 genetic testing uses a blood or saliva sample to read the ABRAXAS1 gene and look for variants. It is usually done as part of a hereditary cancer panel, and results may show a pathogenic variant, a benign change, or a variant of uncertain significance.
When should I consider getting a genetic test?
There is not yet a broadly established, ABRAXAS1-specific clinical reason for testing in most people. Decisions about genetic testing are usually based on your personal or family history of cancer and are best made with a doctor or genetic counselor.
A genetic result is only one part of your health story
Genetic test results can provide meaningful insight, but how much they reveal depends on the condition and the type of variant involved. Many factors, including lifestyle, environment, age, and medical history, influence how the body functions over time. For some conditions, especially those affected by many genes, genetic information adds context rather than certainty and is best understood together with other parts of care. In other situations, a genetic result can 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. Some people break down a drug more slowly or more quickly, so the same dose can lead to different levels of the medicine in the body. This is common and can influence how well a treatment works or how likely someone is to notice side effects. Other health factors also matter, including age, liver and kidney function, and other medicines.
What is Pharmacogenetics?
Pharmacogenetics is the area of study that examines how genetic differences affect response to medications. It focuses on links between genes and drugs 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 more informed and more individualized treatment decisions. More detail on this topic is available in the LearnHub.
Drugs influenced by the ABRAXAS1 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 how they work. Questions about new symptoms, side effects, or concerns about any treatment are best discussed with your doctor or pharmacist.
History
ABRAXAS1 entered the genetics literature in the late 2000s during intensive research on inherited breast and ovarian cancer. It was first reported under other names, including CCDC98 and FAM175A, before ABRAXAS1 became the standard name. Initially understood only through its link to broader BRCA1 research, it gained clearer recognition as scientists mapped the group of genes involved in inherited cancer risk. From these first observations, research expanded steadily. Over time, rare inherited variants in the ABRAXAS1 gene were identified in some families with a strong history of breast cancer, which brought the gene into clinical genetics discussions. Its history is mainly a scientific one, shaped by advances in cancer gene discovery rather than by public attention or a single landmark event.