Is a Cleft Palate Hereditary? Recurrence Risks

Yes, a cleft palate can be hereditary, meaning genetics often play a role. However, the exact chance that your next baby will have a cleft palate depends heavily on the specific cause of your first child’s condition.

Medical professionals generally divide cleft palates into two categories: isolated (non-syndromic) cleft palates and syndromic cleft palates. Understanding which type your child has is the most important step in figuring out your family’s recurrence risk. Usually, a pediatrician, a cleft team, or a medical geneticist will evaluate your child shortly after birth to determine this classification ^[1]. If you aren’t sure which type your child has, you can ask your child’s cleft care team or review their medical records.

(Note: An isolated cleft palate is a completely different medical condition from a cleft lip. While both can occur, the inheritance patterns and risks for future siblings differ ^[2]. The information below applies strictly to cleft palate without a cleft lip.)

Isolated (Non-Syndromic) Cleft Palates

If your child has an isolated cleft palate, it means the cleft is the only medical issue they have, and it is not linked to a larger genetic syndrome ^[3]. These cases are considered multifactorial, meaning they are caused by a complex combination of several minor genetic variations and environmental factors ^[4][5].

For isolated, non-syndromic cleft palates, the risk of a second child having one is higher than it is for the general population, but it is still relatively low. Typically, parents with one child who has an isolated cleft palate have roughly a 2% to 5% chance that their next baby will also be born with one ^[6][7]. This also means there is a 95% to 98% chance that your next baby will not have a cleft palate.

Syndromic Cleft Palates

A syndromic cleft palate occurs when the cleft is part of a broader genetic condition or syndrome, which often involves other physical or developmental challenges (like heart defects, learning delays, or a small jaw) ^[8][9]. One of the most common genetic syndromes associated with a cleft palate is 22q11.2 deletion syndrome ^[10][11].

In these cases, the cleft is usually caused by a specific, identifiable change in a single gene or chromosome ^[1]. If your child’s cleft is part of a syndrome, the recurrence risk for a future pregnancy can be quite different. It may follow a direct inherited pattern, meaning the chance of a second child having the condition could be as high as 25% or 50%, depending on the specific syndrome and whether either parent carries the gene ^[1][10]. In other cases, the genetic change might be brand new to the child (called a de novo mutation), meaning the risk for future siblings is very low ^[1].

The Role of Environmental Factors

Genetics aren’t the only piece of the puzzle. In non-syndromic clefts, a baby’s genetic susceptibility often interacts with the environment during the first trimester of pregnancy ^[12]. Factors that can slightly increase the risk include maternal smoking, certain medications (like anti-seizure drugs or opioids), and nutritional deficiencies ^[13][14].

Because you are planning for a future pregnancy, this is an area where you have some control. Doctors often recommend that mothers who have had a previous child with a cleft speak with their care team about starting high-dose folic acid supplementation several months before trying to conceive, as well as reviewing all current medications ^[15][14].

Consulting a Genetic Counselor

Because the odds can vary so much from family to family, the best way to understand your personal risk is to meet with a genetic counselor—ideally 3 to 6 months before you plan to become pregnant ^[16][17].

A genetic counselor or medical geneticist will look at your child’s medical history, examine your family tree, and possibly recommend specific genetic tests—such as a chromosomal microarray or whole exome sequencing, which are advanced blood or saliva tests that look very closely at your child’s DNA—to determine exactly what caused your child’s cleft palate ^[1][8]. This evaluation will give you the clearest, most accurate picture of your chances for future pregnancies and help you confidently prepare.