The DOCK6 gene helps cells build and organize their internal support system, which is important for normal growth of the scalp, limbs, heart, and blood vessels before birth. This gene plays an important role in how cells change shape and move as tissues form. If you carry a harmful variant in the DOCK6 gene, it can cause Adams-Oliver syndrome, a condition linked to areas of missing scalp skin and differences in the fingers, toes, hands, or feet. Some people also have heart, blood vessel, or brain findings.
What is a gene?
Genes are stretches of DNA that give cells instructions for making molecules or guiding activities in the body. Some genes carry the information needed to produce proteins, which do much of the work inside cells. Others mainly regulate when certain processes happen, where they take place, and how active they are. Taken together, genes affect how the body develops and functions, and they can influence your response to food, stress, or medications. You can explore this topic further in the LearnHub.
Overview
DOCK6Gene function
What if the gene works
The DOCK6 gene helps cells change shape and move by organizing their inner support framework. This supports early development, especially in the limbs, heart, and nervous system.
Risk
What if the gene does not work
Variants in the DOCK6 gene can cause Adams-Oliver syndrome with scalp skin changes and limb differences. Effects can range from mild to more severe and may also involve the heart or blood vessels.
Treatment
What does that mean for your treatment
For people with a pathogenic or loss-of-function variant in the DOCK6 gene, no DOCK6-specific treatment or medication strategy is currently established in clinical guidelines.
Conditions associated with DOCK6
Gene function
What if the gene works
Cells across the body depend on the DOCK6 gene to manage shape and movement in a controlled way. Its protein helps switch on internal signals that organize actin, a set of tiny fibers that gives cells support and flexibility. Understanding DOCK6 gene function helps explain how cells move, stretch, and settle into place during normal growth.
The DOCK6 gene helps turn on RAC1 and CDC42, two control proteins inside cells. These signals tell cells when to adjust their inner framework and outer shape.
Its protein helps organize actin, a network of tiny fibers that supports a cell’s shape. This allows cells to stretch, tighten, and form edges in a coordinated way.
By reshaping this fiber network, the DOCK6 gene supports normal cell movement. This helps cells reach the right place during growth and routine tissue upkeep.
What is a variant?
A genetic variant is a slight difference in the DNA sequence within a gene. These differences are common and help shape normal human diversity, including variation in appearance, metabolism, and the way the body responds to environmental influences. Many variants do not cause any noticeable effects and are simply part of natural genetic variation. Sometimes, though, a variant changes how a gene works more significantly and can contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the DOCK6 gene can change the protein’s shape, make it unstable, or stop it from being made at all, so cells have more trouble organizing their internal support framework. In plain terms, this is how DOCK6 gene variants affect cell movement and shape. Some variants leave partial activity, while more disruptive variants can remove most or all function, which may be linked to earlier or broader features in DOCK6-related Adams-Oliver syndrome.
How variants are linked to conditions
Pathogenic variants in both copies of the DOCK6 gene cause Adams-Oliver syndrome, so the DOCK6 gene is linked to a condition that can involve areas of missing skin on the scalp and differences in the fingers, toes, hands, or feet. Some people with DOCK6-related Adams-Oliver syndrome also have heart, blood vessel, or brain findings, and the range of symptoms can vary from one person to another.
A variant is not necessarily a diagnosis
Genetic variants are a usual part of human biology and are widespread in the general population. Most do not directly affect health and simply reflect natural human diversity. 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 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 that specific lifestyle or environmental factors increase or reduce health risks linked to the DOCK6 gene. For conditions caused by harmful changes in both copies of DOCK6, risk is mainly shaped by the genetic changes themselves and family history. Anyone concerned about personal or family risk should speak with a doctor or genetic counselor.
Inheritance of DOCK6 variants
DOCK6-related conditions that are clearly established in human genetics are inherited in an autosomal recessive pattern. This means a child usually inherits one altered copy of the DOCK6 gene from each parent, and parents who carry one variant typically do not have the condition themselves. When both parents are carriers, each pregnancy has a 25% chance of resulting in a child with the condition, a 50% chance of producing a carrier child, and a 25% chance of producing a child with no inherited DOCK6 variant from either parent. This DOCK6 gene inheritance pattern affects males and females equally.
What does my DOCK6 result mean for my family?
For families with a disease-causing change in the DOCK6 gene, close relatives may also be carriers even if they have no symptoms. Brothers and sisters could also be affected or be carriers, depending on the gene changes they inherited. Family members may want to discuss the result together, since it can help explain whether the same condition could appear again in the family.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for DOCK6 variants uses a blood or saliva sample to read the DNA sequence and look for changes in the DOCK6 gene. In a person with signs of a DOCK6-related condition, finding pathogenic variants in both copies of the gene can confirm the genetic diagnosis and can also help clarify testing for relatives.
When should I consider getting a genetic test?
Consider genetic testing for the DOCK6 gene if a child is born with a scalp area that did not fully form, missing or shortened fingers or toes, or there is a family history of Adams-Oliver syndrome. A DOCK6 result can help confirm the cause and clarify whether other family members may also carry the gene change.
A genetic result is only one part of your health story
A genetic finding can provide useful insight, but how much it explains varies based on the condition and the type of variant involved. Lifestyle, environment, age, and medical history are among the factors that shape how the body functions over time. In some conditions, especially those influenced by many genes, genetic information provides 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 place personal experiences in context.
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 in the body. This can change how well a treatment works or how likely side effects are. These differences are common and are one reason medication response is not the same for everyone.
What is Pharmacogenetics?
Pharmacogenetics looks at how genetic differences can affect a person’s response to medications. It examines links between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medicines, genes influence how the body handles a drug and how strong its effects can be. This information can support treatment decisions that are both more informed and more individualized. You can read more about this topic in the LearnHub.
Drugs influenced by the DOCK6 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for changes in this gene in guiding medication choice or predicting how well a medicine will work. Questions about side effects, new symptoms, or how your medicines may affect you are best discussed with your doctor.
History
In recent decades, awareness of this gene’s role has grown. The DOCK6 gene entered medical genetics through studies of families affected by Adams-Oliver syndrome, a rare inherited condition recognized long before its genetic causes were sorted out. Around 2011, researchers identified pathogenic variants in the DOCK6 gene as one cause of this condition, alongside variants in several other genes. This helped show that Adams-Oliver syndrome was not a single-gene condition but a group of related genetic causes. From these first observations, research expanded steadily. Since then, the DOCK6 gene has mainly been part of specialist work in rare disease genetics rather than broad public discussion.