16p11.2 deletion syndrome

16p11.2 deletion syndrome is a rare genetic condition that happens when a tiny piece of DNA is missing from a specific spot on a chromosome. This missing piece affects how the body grows and develops, especially in children. Many children with this condition may develop slower than others and could have challenges with learning and thinking. Another common issue for these children is that they may gain weight more easily and become overweight during their early years.

This condition is also linked to autism, as about one percent of children diagnosed with autism may have this same genetic change. Understanding this syndrome helps doctors and families support children in the best ways possible, making sure they get the right care and attention they need to grow up healthy.

Signs and symptoms

Many people with 16p11.2 deletion syndrome experience delays in growing and learning, along with behavioral challenges. While not everyone has trouble with learning, many find it harder to learn new things and may have difficulties with speaking clearly. Some may also have trouble focusing or may show behaviors common in autism spectrum disorder.

Some individuals may have seizures or unusual movements. They might also have trouble with balance or walking. A big challenge for many is managing weight, as they often feel very hungry and can become obese at a young age. Other possible signs include a larger head size, small skin marks, or spine issues. There is also a higher chance of developing a certain type of cancer called neuroblastoma.

Genetics

16p11.2 deletion syndrome happens when a small piece of DNA is missing from a part of chromosome 16. This missing piece can affect many genes, which are like instructions in our bodies.

Most often, this change happens on its own and is not passed from parents to children. However, in some cases, a parent might carry the change without showing symptoms themselves. This condition is rare, affecting about 1 in 2,000 people.

Management

Managing 16p11.2 deletion syndrome depends on each person's specific needs. Help may include special education, psychiatric care, standard epilepsy treatment, audiology checks, and physical and occupational therapy to improve movement skills. Because people with this condition often have a higher risk of gaining weight, doctors avoid certain medicines that can make weight gain worse. Support from social workers and community groups can also help families and individuals living with the syndrome.