The LIPH gene helps hair follicles make signals that support normal hair growth and hair texture. This gene plays an important role in how developing hairs form and anchor in the scalp. When both copies carry disruptive variants, a person may have very sparse scalp hair, slow hair growth, or tightly curled, woolly hair from early life. These changes are most often linked to inherited forms of hypotrichosis, a condition with reduced hair growth.
What is a gene?
Genes are stretches of DNA that carry instructions cells use to make molecules or direct activities in the body. Some provide the code for proteins, which do much of the work inside cells. Others mostly regulate when certain processes happen, where they happen, and how active they are. As a group, genes affect how the body develops and works, and they can shape how you respond to food, stress, or medicines. For a deeper look at this subject, you can learn more in the LearnHub.
Overview
LIPHGene function
What if the gene works
The LIPH gene helps make a signal needed for normal hair follicle growth. It supports how developing hair shafts form, which helps hair grow with its usual texture and strength.
Risk
What if the gene does not work
Variants in the LIPH gene mainly affect hair growth, often causing sparse scalp hair and tightly curled or woolly hair from early life. Milder or more severe variants can lead to different degrees of thinning and texture change.
Treatment
What does that mean for your treatment
No LIPH-specific treatment or management approach is currently established for people with pathogenic or loss-of-function variants in the LIPH gene. Research is exploring the LIPH pathway in hair growth biology, and LIPH expression is also being studied as a possible biomarker or drug target in some cancers.
Conditions associated with LIPH
Gene function
What if the gene works
In skin, the LIPH gene helps cells make a small fat signal that supports normal hair follicle activity. This signal helps neighboring cells pass messages in a controlled way. Understanding how the LIPH gene supports hair growth also helps explain why it matters for everyday hair formation.
One of the roles of the LIPH gene is to make lysophosphatidic acid, a small fat signal used for cell communication. It does this by cutting a membrane fat into a form that nearby cells can recognize.
In hair follicles, this gene helps cells send growth and shaping signals at the right time. These messages support the steps that build and maintain a normal hair shaft.
Through its protein, the LIPH gene helps coordinate communication between cells in the skin and hair follicle. This steady signaling supports routine tissue activity as hair grows.
What is a variant?
A genetic variant is a minor change in the DNA sequence within a gene. These changes are common and help create normal human diversity, including differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not have any noticeable effect and simply represent natural genetic variation. In some situations, though, a variant may change how a gene functions more significantly and can contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the LIPH gene can change the shape of the lipase H protein or stop cells from making a full-length protein, which lowers or removes its enzyme activity. In descriptions of how variants in the LIPH gene affect hair growth, milder variants may leave some activity, while more severe variants often leave little to none. This functional range can influence whether sparse scalp hair or woolly hair appears earlier and seems more noticeable.
How variants are linked to conditions
Pathogenic variants in the LIPH gene can cause inherited hair conditions, especially autosomal recessive hypotrichosis and woolly hair or woolly hair with hypotrichosis. In families looking into LIPH gene variants and hair loss, these changes are linked to sparse, slow-growing, or fragile scalp hair from early life. When two disease-causing LIPH variants are found in the right clinical setting, they can confirm the diagnosis.
A variant is not necessarily a diagnosis
Variants in genes are a usual part of human biology and are widely seen across the population. Most do not directly affect health and instead reflect normal human variation. For many genes, having a variant associated with a condition points to a possible link, not a certain diagnosis, particularly when several genes and environmental influences play a role. In some situations, though, one well described 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 LIPH gene. For many living with changes in LIPH, the main issue is inherited hair growth differences rather than lifestyle-driven risk, and personal concerns are best discussed with a doctor or genetic counselor.
Inheritance of LIPH variants
Variants in the LIPH gene linked to inherited hair conditions are usually passed down in an autosomal recessive pattern. That means a child inherits one changed copy from each parent, and parents who each carry one variant typically do not have the condition themselves. With this pattern, each pregnancy has a 25% chance that the child will inherit both changed copies, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither changed copy. This is the main answer to how variants of the LIPH gene are inherited.
What does my LIPH result mean for my family?
Changes in the LIPH gene are linked to inherited hair growth conditions that usually run in families in a recessive pattern. For family members, this often means parents can carry the gene change without having symptoms, and brothers, sisters, or future children may also carry it or be affected. Close relatives may want to learn whether the same result is present in their side of the family.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a variant in the LIPH gene, a lab can do genetic testing for LIPH variants using a blood sample, saliva, or a cheek swab. The lab reads the gene's DNA code and compares it with the usual sequence to look for variants that may help explain hair growth changes or sparse scalp hair.
When should I consider getting a genetic test?
Genetic testing for the LIPH gene may be worth considering if you or your child has very sparse, slow-growing, or tightly curled scalp hair from early childhood, especially when similar hair changes run in the family. It can help confirm whether an inherited hair growth condition is the cause.
A genetic result is only one part of your health story
Genetic test results can provide useful insight, but the amount they reveal varies with the condition and the kind of variant found. How your body functions over time is also shaped by many factors, including lifestyle, environment, age, and medical history. For some conditions, particularly those affected by many genes, genetic information offers context rather than certainty and makes the most sense when viewed with the rest of a person’s care. In other situations, a genetic result may 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. Small differences in genes can change how the body breaks down a drug, moves it through the body, or how strongly the drug acts on its target. This kind of variation is common. It helps explain why the same treatment may work well for one person, work less well for another, or cause more side effects in some people.
What is Pharmacogenetics?
Pharmacogenetics is the area of study that examines how genetic differences affect the response to medications. It looks at links between genes and drugs to help explain why treatments can work differently from one person to another. With many medicines, genes influence either how strongly a drug works or how the body handles it. This information can support more informed, more individualized treatment decisions. More detail on this topic is available in LearnHub.
Drugs influenced by the LIPH gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or response. It is a good idea to speak with your doctor or pharmacist if you have concerns about side effects, medicine safety, or how well a treatment is working, especially before starting, stopping, or changing a medication.
History
Families and communities once noticed patterns that seemed to pass from parent to child. In the early 2000s, researchers studying families with very sparse scalp hair and tightly curled hair began tracing the shared genetic cause. In 2006, variants in the LIPH gene were identified in several affected families, helping link this gene to forms of inherited hypotrichosis, meaning unusually reduced hair growth. From these first observations, research expanded steadily, with reports from Japan, Pakistan, and other countries showing that LIPH related hair conditions appear in different populations. These studies helped place the LIPH gene in the growing history of genes known to shape human hair growth and texture.