The ARHGAP35 gene helps control how cells change shape, move, and stick to nearby cells as the body grows and repairs itself. If it does not work properly, these signals can become less controlled, which may contribute to developmental differences and, in some people, eye or nervous system findings. This gene plays an important role in keeping growth and cell behavior balanced. ARHGAP35 is mainly known in genetics and clinical research rather than in popular culture.
What is a gene?
Genes are stretches of DNA that give your cells instructions for making molecules or directing processes in the body. Some genes carry the code for proteins, which do much of the work inside cells. Others mainly regulate when certain processes happen, where they take place, and how strongly they run. Taken as a whole, genes affect how the body develops and functions, and they can influence how you respond to food, stress, or medications. For a more detailed look at this topic, you can find additional information in the LearnHub.
Overview
ARHGAP35Gene function
What if the gene works
The ARHGAP35 gene helps control signals that shape how cells move, stick, and change form. By turning down certain movement signals, it supports normal tissue growth and cell organization.
Risk
What if the gene does not work
Variants in the ARHGAP35 gene can lead to developmental conditions, often eye differences such as coloboma or small eyes, and in some people developmental delay. Milder and more severe variants may affect which features appear and how marked they are.
Treatment
What does that mean for your treatment
No treatment or management approach is currently established specifically for pathogenic variants in the ARHGAP35 gene. The ARHGAP35 gene is being studied in cancer research as a possible biomarker, but this has not changed routine treatment choices.
Gene function
What if the gene works
Every day, your cells need to adjust their shape, hold on to nearby structures, and move in a controlled way. The ARHGAP35 gene helps fine tune the signals behind these actions. This supports steady cell behavior in many tissues, especially where cells need to change tension, position, or contact.
Its protein helps switch off certain shape and movement signals, especially RHOA (a signal that controls cell tension). This keeps cell responses measured and well timed.
By calming signals that pull on the cell’s inner scaffold, the ARHGAP35 gene helps cells keep a balanced shape. This is part of how the ARHGAP35 gene supports cell movement and shape in everyday tissue function.
This gene helps cells make and loosen contacts with nearby cells and surrounding surfaces at the right time. That supports stable tissue layers and coordinated movement.
ARHGAP35 also helps coordinate the final stage of cell division, when one cell separates into two. By keeping inner pulling forces under control, it supports a clean split.
What is a variant?
A genetic variant is a slight difference in the DNA sequence within a gene. These differences are common and help account for normal human diversity, such as variation in appearance, metabolism, or the way the body responds to environmental influences. Many have no noticeable effect and are simply part of natural genetic variation. In some situations, though, a variant can change how a gene functions more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Changes in the ARHGAP35 gene can alter the p190A protein so it is shortened, unstable, or less able to control RHO signaling inside cells. These ARHGAP35 gene variants may weaken key protein interactions and disturb how cells change shape, move, and organize during development. Milder variants can leave some activity in place, while more severe loss of function variants may remove major parts of the protein or stop it from being made at all.
How variants are linked to conditions
The ARHGAP35 gene does not yet have a broadly confirmed link to one specific health condition, although research on variants in the ARHGAP35 gene and related conditions is still evolving. If you have a confirmed ARHGAP35 variant and a related diagnosis, your doctor or genetic counselor can explain what that result means for you and your family.
A variant is not necessarily a diagnosis
Genetic variants are a common and normal feature of human biology. Most do not directly affect health and instead reflect natural variation among people. 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 also play a role. In other situations, though, one well-studied 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 ARHGAP35 gene. If ARHGAP35 is part of your test results and you have questions about what it may mean for you or your family, a doctor or genetic counselor can help put that result in context.
Inheritance of ARHGAP35 variants
There is not yet a single, broadly confirmed inheritance pattern for ARHGAP35-related health conditions that is used routinely across clinical genetics, and this understanding may become clearer as research grows. For people looking into how ARHGAP35 gene variants are inherited in families, one clear point is that the ARHGAP35 gene sits on chromosome 19, which is an autosome. That means each person usually has two copies of this gene, with one inherited from each parent.
What does my ARHGAP35 result mean for my family?
For ARHGAP35, the best-known health conditions are linked to a dominant pattern, which means close relatives such as parents, brothers, sisters, and children may also carry the same gene change and may want to discuss family testing. In some families, the change is new in the affected person and is not found in either parent, so a parent is not always the source. The exact meaning for relatives depends on the specific ARHGAP35 result and the condition involved.
Genetic information
Genetic testing
How you find out about variants
Variants in the ARHGAP35 gene are found with genetic testing, usually from a blood sample or saliva. A lab reads your DNA code to look for changes in the ARHGAP35 gene, often as part of a multigene panel or exome sequencing. This is how you find out about variants and what genetic testing is and how it works.
When should I consider getting a genetic test?
There is not yet a broadly established ARHGAP35-specific reason for genetic testing in routine care. Testing may still be considered with a doctor or genetic counselor if there are unexplained developmental or birth differences, or a family history of similar findings, usually as part of a broader gene panel.
A genetic result is only one part of your health story
Genetic results can provide meaningful insight, but how much they reveal depends on the condition and the kind of variant involved. Over time, many factors shape how the body works, 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 most useful when 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 genes can change how the body breaks down a drug, moves it through the body, or responds to it at its target. This helps explain why the same medication may work well for one person, work less well for another, or cause more side effects in someone else.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can affect the way people respond to medications. By looking at connections between genes and drugs, it helps 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, more individualized treatment decisions. More detailed information on this topic is available in the LearnHub.
Drugs influenced by the ARHGAP35 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. If you have concerns about side effects, drug interactions, or changes in how you feel after starting a medicine, speak with your doctor.
History
The ARHGAP35 gene entered the scientific literature through work in the 1990s on a protein first known as p190A RhoGAP. Researchers were trying to understand how cells change shape, attach, and move, and this gene became part of that story. From these first observations, research expanded steadily. As gene mapping and sequencing improved, p190A RhoGAP was linked to the ARHGAP35 gene, giving it a clearer place in human genetics. Later studies connected changes in this gene with cancer biology and developmental research, which increased interest in its medical relevance. Over time, scientists’ understanding of the gene’s place in cell signaling and disease has become more precise.