Cornelia De Lange Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Sumiran Racherla, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Cornelia De Lange Syndrome?
A clinical geneticist, a doctor who diagnoses inherited conditions, and a pediatrician, a children's doctor, usually lead care. Other specialists help with specific problems. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is Cornelia de Lange syndrome?
Cornelia de Lange syndrome is a developmental disorder that affects many parts of the body. The features vary widely and range from relatively mild to severe.
It is marked by slow growth before and after birth, which leads to short stature. It also causes intellectual disability that is usually moderate to severe. It likely affects 1 in 10,000 to 30,000 newborns. It is probably underdiagnosed, because people with mild features may never be recognized. Other names include Brachmann-de Lange syndrome and CdLS.
Symptoms
Symptoms can include abnormal bones in the arms, hands, and fingers. Most people also have distinctive facial features, including arched eyebrows that often meet in the middle.
Face features can also include:
- Long eyelashes.
- Low-set ears.
- Small, widely spaced teeth.
- A small, upturned nose.
Other signs can include:
- Excessive body hair.
- An unusually small head.
- Hearing loss.
- Problems with the digestive tract.
- A cleft palate, an opening in the roof of the mouth.
Seizures, heart defects, and eye problems have also been reported. Many people also have features like autism spectrum disorder.
Causes and who gets it
It can result from changes in one of several genes. These changes are called variants. Variants in the NIPBL gene are found in more than half of all people with this condition.
In about 15 percent of cases, the cause is unknown.
Most cases result from new gene variants in people with no history of the condition in their family.
How doctors diagnose it
Doctors diagnose it from suggestive clinical features, genetic testing, or both. Genetic testing looks for a change in one of the known genes.
Treatment
Care aims to improve quality of life and reduce problems.
Doctors may use special growth charts. They may add supplementary formulas or a feeding tube to meet nutrition needs. They treat acid reflux closely. If reflux is severe, a surgery called fundoplication may be considered.
Physical, occupational, and speech therapy can help development and communication. Epilepsy, heart defects, hearing loss, and cleft palate get standard treatment. Family and social work support is also recommended.
Before surgery, doctors should check for low platelets and heart disease. They should also watch the airway closely during anesthesia.
When to see a doctor
People with this syndrome need regular checkups. At each visit, doctors measure growth and check nutrition. They also watch for signs of reflux. They look for new problems, such as seizures.
Call 911 or go to the emergency room if a child has trouble breathing, a seizure, or choking.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. A direct primary care doctor can help coordinate care among the many specialists a person with this syndrome may see. They can also offer regular follow-up visits.
Common questions
Is Cornelia de Lange syndrome inherited?
Sometimes. Most cases result from new gene variants in people with no family history. Some forms are passed down in families in a dominant way, and others are X-linked.
How common is Cornelia de Lange syndrome?
It is rare. It likely affects 1 in 10,000 to 30,000 newborns.
How is Cornelia de Lange syndrome treated?
It is treated by managing each problem the person has. It can include feeding support and physical, occupational, and speech therapy.
Does everyone with the syndrome have the same symptoms?
No. The features vary widely, from relatively mild to severe.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
