The NDE1 gene helps guide cell division and supports early brain growth, especially the way developing brain cells move and organize. This gene plays an important role in building the brain’s structure before birth. When both copies of the NDE1 gene do not work properly, brain development can be affected, which may lead to a very small head size at birth, developmental delay, seizures, and changes in the brain seen on scans.
What is a gene?
A gene is a stretch of DNA that carries instructions your cells use to make molecules or regulate processes in the body. Some genes provide the instructions for making proteins, which are the functional parts of cells. Others are mainly involved in controlling when certain processes happen, where they take place, and how active they are. Taken together, genes affect how the body grows and works, and they can influence how you respond to food, stress, or medications. For a more detailed look at this topic, you can read more in the LearnHub.
Overview
NDE1Gene function
What if the gene works
The NDE1 gene helps cells divide in an organized way and supports early brain development. Its protein helps guide how brain cells grow, move into place, and build the brain’s structure.
Risk
What if the gene does not work
More disruptive variants in the NDE1 gene can markedly affect early brain development, often causing a very small head size and major structural brain changes before birth. Milder variants may lead to a wider range of developmental effects.
Treatment
What does that mean for your treatment
No treatment or drug choice approach specific to a pathogenic variant in the NDE1 gene is currently established. Research is exploring whether changes near the NDE1 gene may affect response to some psychiatric medicines, but this has not become part of routine treatment guidance.
Conditions associated with NDE1
Gene function
What if the gene works
In developing tissues, especially the brain, the NDE1 gene helps cells divide in an orderly way and move key materials to the right place. It supports the cell’s internal tracks, which guide movement and shape. This helps explain what the NDE1 gene does during early brain development and routine cell growth.
The NDE1 gene helps organize the centrosome, a cell structure that sets up cell division. This keeps chromosomes and other cell contents arranged so one cell can become two in a controlled way.
Its protein works with dynein, a motor that carries cargo along the cell’s internal tracks. This helps place important cell parts where they are needed during growth and division.
During early brain development, the NDE1 gene supports the repeated division of young nerve cells. It also helps guide where these cells are positioned as the brain’s layered structure forms.
What is a variant?
A genetic variant is a minor change in the DNA sequence within a gene. These changes are common and help shape normal human diversity, including differences in appearance, metabolism, and how the body responds to environmental influences. Many variants do not cause any noticeable effect and simply represent natural genetic variation. In some situations, though, 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
NDE1 gene variants can make the protein shorter, unstable, or less able to bind its partner proteins, which can disrupt the cell's internal scaffolding for cell division and brain cell movement. In how NDE1 gene variants affect function, milder changes may leave some activity, while more severe variants that largely stop the gene from working can remove most or all activity. Greater functional loss is often linked to earlier and more marked brain development problems.
How variants are linked to conditions
Pathogenic variants in the NDE1 gene can cause rare inherited brain development conditions, especially severe congenital microcephaly, often with lissencephaly or very limited brain growth. These conditions linked to the NDE1 gene usually start before birth and may lead to major developmental delays, feeding problems, seizures, and a shorter life span. This is most often seen when a person has disease-causing variants in both copies of the gene.
A variant is not necessarily a diagnosis
Variants in genes are a routine part of human biology and are widespread in the general population. Most do not have a direct effect on health and instead reflect normal 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 influences are involved. In some situations, though, 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 increase or reduce health risk related to the NDE1 gene. For many living with an NDE1 gene change, risk depends mostly on the exact genetic change and family history, so discussing personal risk with a doctor or genetic counselor can be helpful.
Inheritance of NDE1 variants
NDE1-related conditions with a well-established genetic basis are inherited in an autosomal recessive pattern. This means a child usually inherits one NDE1 gene variant from each parent. When both parents carry one variant, each pregnancy has a 25% chance of being affected, a 50% chance of producing a carrier child, and a 25% chance of producing a child without either variant. In families asking how NDE1 gene variants are inherited, this carrier-parent pattern is the main one described.
What does my NDE1 result mean for my family?
For families with a disease-causing change in the NDE1 gene, close relatives may also be carriers, even if they are healthy. Brothers and sisters could be affected or could carry the same gene change, depending on what they inherited. Parents are often carriers, and other relatives may wish to learn whether they carry it too, especially when planning a pregnancy.
Genetic information
Genetic testing
How you find out about variants
Finding out whether you carry a variant in the NDE1 gene usually involves NDE1 genetic testing on a blood or saliva sample. A lab reads the DNA code in the gene and compares it with the usual sequence to identify changes, which can help confirm or rule out a genetic cause of symptoms.
When should I consider getting a genetic test?
Testing for the NDE1 gene may be considered if a baby or child has a very small head size, major brain development differences on scans, severe developmental delay, or seizures, especially if similar problems run in the family. It can also show whether parents carry the same gene change after a child is diagnosed.
A genetic result is only one part of your health story
A genetic finding can give useful insight, but how much it explains depends on the condition and on the kind of variant present. Many factors, including lifestyle, environment, age, and medical history, influence how the body functions over time. For some conditions, particularly those shaped by many genes, genetic information provides context rather than certainty and makes the most sense when viewed together with other parts of care. In other situations, a genetic finding can give a clear answer. In areas like medication response, genetic results can also help put personal experiences in context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines by changing how the body breaks them down, moves them, or responds to them at their target. That helps explain why the same medication may work well for one person, seem weaker for another, or cause more side effects in someone else. These differences are common and are one part of the bigger picture, along with age, liver and kidney function, other medicines, and overall health.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can affect the way a person responds to medication. 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 influence both how strongly a drug works and how the body handles it. This information can support more personalized and better informed treatment decisions. More on this topic is available in the LearnHub.
Drugs influenced by the NDE1 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or dosing, so general concerns about side effects, benefits, or medicine changes are best discussed with your doctor. Some early research has looked at whether NDE1 may affect response to certain mental health medicines, but this has not become part of standard medical care.
History
NDE1 came into human genetics through research on rare inherited brain development conditions, especially forms of very small head size and a smooth brain surface. Initially understood only through visible traits, later recognized as tied to a specific gene, it was identified in the early 2000s as scientists mapped affected families and compared shared DNA changes. Around the same time, laboratory work connected the NDE1 gene to earlier studies of related proteins involved in how nerve cells develop and move into place. From these first observations, research expanded steadily and showed that changes in this gene can lead to a spectrum of developmental effects. Over time, descriptions became more precise as brain imaging and genetic testing improved together.