Potocki Lupski Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Potocki Lupski Syndrome?
A primary care doctor usually coordinates care and handles routine health needs. Children with this condition also see a medical geneticist, a doctor who specializes in genetic conditions. Depending on symptoms, other specialists may include a cardiologist, a neurologist, and a developmental pediatrician.
What it is
Potocki Lupski syndrome is a rare genetic condition caused by a change in a person's genes, the instructions that guide growth and development. The signs can range from mild to more serious.
Symptoms
The most common sign is developmental delay, meaning a child reaches milestones like sitting, walking, or talking later than expected. Many children have low muscle tone, and speech is often delayed; some children never develop spoken language. Other signs can include feeding problems, differences in the face, ears, or mouth, heart problems present at birth, seizures, sleep problems, and repeated ear infections.
Causes and who gets it
Potocki Lupski syndrome happens when a person has an extra copy of a small piece of chromosome 17. The extra piece includes a gene called RAI1, and having three copies of it causes the condition. This change is called a duplication. In most cases, it happens by chance for the first time in a child, though it can sometimes be passed down from a parent who also has it, and some carriers have only mild signs or none at all.
How doctors diagnose it
Doctors often suspect a genetic condition when a child has developmental delay with other physical signs. The main test is a blood or saliva test called a chromosomal microarray, which looks for missing or extra pieces of chromosomes. It can confirm the diagnosis and show whether a parent carries the duplication. Because the condition can affect the heart, doctors may also order an echocardiogram.
Treatment
There is no cure for Potocki Lupski syndrome. Treatment focuses on managing symptoms. Speech therapy helps children communicate, physical therapy builds muscle strength and coordination, and occupational therapy teaches everyday skills like dressing and eating. Children with heart defects may need care from a heart specialist, and seizures can be treated with medicines.
When to see a doctor
Talk to a doctor if a baby or child is not meeting milestones at the usual ages. Feeding trouble, very floppy muscles, or long pauses in breathing during sleep also deserve attention.
How a direct primary care or concierge doctor fits in
A direct primary care doctor is paid a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either type can spend extra time coordinating care and referring the family to specialists as needed.
Common questions
Can adults have Potocki Lupski syndrome?
Yes. The condition is present from birth and lasts a lifetime, so adults can have it too. Some adults were diagnosed as children. Others learn they carry the duplication only after their own child is tested.
Will my other children have it?
If a parent carries the duplication, each pregnancy has a chance of passing it on. A genetic counselor can help families understand the specific chances. Testing can show whether parents carry the duplication.
How serious is it?
Seriousness varies a lot from person to person. Some people have mild learning differences and few health problems. Others need ongoing care for the heart, seizures, or daily living skills. Regular medical follow-up helps address problems as they come up.
Sources
- NIH Genetic and Rare Diseases Information Center - 17p11.2 microduplication syndrome
- MedlinePlus Genetics - Potocki-Lupski syndrome
- MedlinePlus - Developmental Disabilities
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.
