Carey Fineman Ziter Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Carey Fineman Ziter Syndrome?
A primary care doctor usually coordinates care. Because the syndrome affects many parts of the body, a team of specialists often helps, including a medical geneticist, surgeons, hormone specialists, and eye doctors. 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 it is
Carey Fineman Ziter syndrome is a very rare condition that a person is born with. It is caused by a change in a gene called MYMK, which helps muscle cells join together as muscles form. People with the syndrome often have weakness in the muscles of the face, a small lower jaw, a cleft palate, and eyes that do not move normally.
Symptoms
Signs can differ from person to person. Common features include:
- Weakness or lack of movement in the muscles of the face.
- Eyes that do not move side to side normally.
- A small lower jaw and a cleft palate, a gap in the roof of the mouth.
- Trouble feeding and slower weight gain in infancy.
- Hormone problems that can delay puberty.
Not everyone will have every feature.
Causes and who gets it
The syndrome happens when a child inherits one changed copy of the MYMK gene from each parent. Each parent usually has no symptoms. This is called autosomal recessive inheritance. It is extremely rare, with only a small number of cases described in medical literature.
How doctors diagnose it
Diagnosis starts with a physical exam and medical history, checking the face, mouth, and eyes. Imaging tests, such as an MRI, may be used. A genetic test on a blood or saliva sample can confirm the diagnosis.
Treatment
There is no treatment that fixes the gene change itself. Care focuses on each symptom:
- Surgery can repair a cleft palate.
- Feeding support helps babies who have trouble eating.
- Speech therapy helps children with mouth muscle weakness.
- Hormone treatment can help with puberty and growth.
- An eye doctor can manage vision problems.
When to see a doctor
A baby with trouble feeding, a very small lower jaw, or a gap in the roof of the mouth should be seen soon after birth. Children who are not growing as expected should also be checked. Families planning more children may want genetic counseling.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance; a concierge doctor usually charges more and often works alongside insurance. Either can spend extra time coordinating complex care and referring to specialists when needed.
Common questions
Is Carey Fineman Ziter syndrome life threatening?
The syndrome itself is not usually described as life threatening. However, some symptoms, such as severe feeding trouble in babies, need prompt treatment. Each person's situation is different, so families should talk with their own doctors about what to expect.
Can it be prevented?
There is no known way to prevent the gene change that causes the syndrome. Genetic testing and counseling can help parents understand the chance of having another child with the condition.
Will my child need surgery?
Many children with a cleft palate do have surgery to repair it. But not every person with the syndrome needs every treatment. The care plan depends on which symptoms are present.
How is it different from Moebius syndrome?
Moebius syndrome also causes facial weakness and limited eye movement, and the two conditions can look similar. Carey Fineman Ziter syndrome is caused by changes in the MYMK gene. It often includes a cleft palate and hormone problems as well.
Sources
- NIH Genetic and Rare Diseases Information Center - Congenital nonprogressive myopathy with Moebius and Robin sequences
- MedlinePlus - Birth Defects
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.
