DMP1 helps control how bones and teeth harden and supports healthy phosphate levels, a mineral your body needs for strength. This gene plays an important role in keeping bones properly hardened as children grow and adults maintain bone. If the DMP1 gene is not working properly, people can develop soft or weak bones, bone pain, bowed legs, short stature, and dental problems such as weak or worn teeth. Certain pathogenic variants can cause an inherited form of low phosphate rickets.
What is a gene?
Genes are stretches of DNA that give your cells instructions to make molecules or direct processes in the body. Some genes hold the information needed to produce proteins, the parts of cells that do much of the work. Others mainly regulate when certain processes happen, where they take place, and how active they are. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, and medications. If you want to look into this topic more closely, you can find more in the LearnHub.
Overview
DMP1Gene function
What if the gene works
The DMP1 gene helps build and harden bones and teeth. Its protein supports normal mineral handling, especially phosphate, so bone tissue can mature and stay strong.
Risk
What if the gene does not work
Variants in the DMP1 gene can cause low phosphate levels that weaken bone and tooth mineralization, leading to rickets or osteomalacia, short stature, bowed legs, bone pain, and dental changes. Milder or more severe variants can shift when features appear.
Treatment
What does that mean for your treatment
No treatment or drug choice strategy specific to the DMP1 gene is currently established in clinical guidelines. Care for pathogenic or loss-of-function variants in the DMP1 gene usually follows the general treatment approach for hereditary low phosphate bone conditions, rather than a therapy tailored to this gene.
Conditions associated with DMP1
Gene function
What if the gene works
Strong bones and firm teeth depend in part on the DMP1 gene. It helps bone and tooth cells guide calcium and phosphate into the right places, so hard tissues gain structure and strength. It also supports signals that keep phosphate available for normal mineral building. Understanding how the DMP1 gene supports bone and tooth mineralization helps explain everyday skeletal strength and tooth stability.
In bone, the DMP1 gene helps organize where mineral is placed within the tissue framework. This allows bone to harden in a controlled way while keeping its normal structure.
In teeth, the DMP1 gene supports formation of dentin, the hard layer under enamel. It helps tooth building cells place mineral into dentin so teeth stay firm during biting and chewing.
The DMP1 gene helps bone cells send signals that support healthy phosphate balance. A steady phosphate supply helps your body build and maintain normal bone and tooth mineral.
What is a variant?
A genetic variant is a minor change in the DNA sequence within a gene. These changes are common and help explain normal differences among people, such as appearance, metabolism, or the way the body reacts to environmental influences. Many do not have any noticeable effect and are simply part of natural genetic variation. In some instances, though, a variant can change how a gene functions more strongly and may contribute to, or cause, a genetic condition.
Genetic variants
What if the gene does not work
Variants in the DMP1 gene can shorten the DMP1 protein, make it unstable, or disrupt how bone cells release and use it. This helps explain how DMP1 gene variants affect protein function: milder variants may leave some activity, while more severe variants can greatly reduce or remove signals that guide mineralization. In people with rickets linked to the DMP1 gene, that difference can influence how early features appear and how marked they become.
How variants are linked to conditions
Pathogenic variants in the DMP1 gene cause autosomal recessive hypophosphatemic rickets type 1, so a DMP1 gene diagnosis is linked to low phosphate levels, soft or weak bones, bone pain, short stature, and bowed legs. Some people also have osteomalacia in adulthood and dental changes, such as frequent tooth problems. This is a rare inherited condition, and carrying one altered copy usually does not cause the disease.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widespread in the general population. Most do not directly affect health and instead reflect normal human diversity. For many genes, carrying a variant associated with a condition indicates a possible link rather than a definite diagnosis, especially when several genes and environmental factors contribute. 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?
For DMP1, risk is mainly shaped by the genetic change itself rather than lifestyle or everyday habits. If both parents carry a harmful DMP1 variant, their child has a higher chance of inheriting the condition. There is not enough evidence to say that diet, exercise, or supplements lower the chance of having a DMP1-related condition.
Inheritance of DMP1 variants
DMP1-related low phosphate bone disease is inherited in an autosomal recessive pattern. This means a child usually inherits one altered copy of the DMP1 gene from each parent, and both parents are often healthy carriers. When both parents carry a DMP1 gene variant, each pregnancy has a 25% chance of the child inheriting both altered copies, a 50% chance of being a carrier, and a 25% chance of inheriting neither altered copy. In families looking into how DMP1 gene variants are inherited, this also means sons and daughters are affected at similar rates because the DMP1 gene is on an autosome, not a sex chromosome.
What does my DMP1 result mean for my family?
Changes in the DMP1 gene are best known for a rare inherited condition that follows a recessive pattern. For family members, this usually means parents may be healthy carriers, brothers and sisters could also be carriers or, less often, have the condition, and future children in the family could be affected if both parents carry a changed copy. Close relatives may want to learn whether the same gene change runs in the family.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for DMP1 variants uses a blood or saliva sample to read the DNA code in the DMP1 gene. Results may show a disease causing variant, a harmless variant, or a variant of uncertain significance, which means the finding is not yet clear.
When should I consider getting a genetic test?
If you or your child has ongoing low phosphate levels, soft or weak bones, bowed legs, slow growth, or repeated dental problems, testing the DMP1 gene may help find the cause. It can also be useful when these problems run in the family or when a relative has a known change in the DMP1 gene.
A genetic result is only one part of your health story
Genetic test results can be informative, but how much they reveal varies by the condition and the type of variant involved. Over time, many factors also shape how the body works, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is best understood alongside other parts of care. In other situations, a genetic result may give a clear answer. In areas like medication response, these results can also help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how your body responds to medicines. Small differences in genes can change how a drug is absorbed, broken down, or used by the body, so the same treatment may work better for one person than another. This is common and can influence both how well a medicine helps and how sensitive someone is to side effects.
What is Pharmacogenetics?
Pharmacogenetics studies how genetic differences can shape a person’s response to medications. It examines links between genes and drugs to better explain why treatments may work differently from one individual to another. With many medicines, genes can affect how strongly a drug works or how the body processes it. This information can help support more informed and individualized treatment decisions. You can read more about this topic in the LearnHub.
Drugs influenced by the DMP1 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in predicting how medicines will work, so any concerns about treatment, side effects, or your overall health are best discussed with your doctor or pharmacist.
History
Researchers first identified the DMP1 gene in the 1990s while studying proteins in developing teeth, especially dentin, the hard tissue under enamel. Early work linked it mainly to tooth formation, but later studies showed that it also has an important role in bone. Over time, scientists’ understanding of the gene’s function has changed. A major step came when variants in the DMP1 gene were found in families with inherited low phosphate levels and rickets, which connected the gene to whole body mineral balance as well as teeth. These findings helped place the DMP1 gene within the broader history of bone and mineral research.