Frasier Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Frasier Syndrome?
A primary care doctor often coordinates care, while a nephrologist manages the kidney problems. An endocrinologist, geneticist, or urologist may also be involved. 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 Frasier syndrome?
Frasier syndrome is a rare genetic condition affecting the kidneys and reproductive organs, related to a condition called Denys-Drash syndrome.
Frasier syndrome mainly affects the kidneys, which filter waste from the blood, and the reproductive system. The kidney problem, focal segmental glomerulosclerosis, is scarring in the kidney's tiny filters that leaks protein into the urine. Over time the kidneys can fail, and some people need dialysis or a transplant. Most affected people have XY chromosomes, but their sex organs may not have developed typically; some are raised as girls. Girls can also be affected, usually with the kidney problems.
Symptoms
Signs often appear in childhood:
- Protein in the urine, a sign the kidney filters are damaged.
- Swelling in the face, belly, legs, or feet.
- High blood pressure.
- Kidney function that slowly worsens.
- Differences in sex development.
- Delayed or absent puberty and a higher risk of certain tumors.
Causes and who gets it
Frasier syndrome is caused by a mutation in the WT1 gene, which helps control kidney and reproductive organ development. It is usually autosomal dominant, meaning one changed gene is enough, though the change often happens for the first time in the child. It is rare.
How doctors diagnose it
Doctors use a history, exam, urine and blood tests, and ultrasound. Genetic testing for WT1 changes can confirm the diagnosis, and a kidney biopsy is sometimes done. Hormone levels and chromosomes may also be checked.
Treatment
There is no cure; treatment protects the kidneys and manages symptoms. Medicines can reduce protein leakage and control blood pressure. If the kidneys fail, dialysis or a transplant may be needed. Hormone care or surgery may help with differences in sex development, and doctors may recommend tumor screening.
When to see a doctor
See a doctor for swelling, foamy urine, or high blood pressure. Children with differences in sex development should be evaluated, and diagnosed patients need regular follow-up.
How a direct primary care or concierge doctor fits in
A direct primary care or concierge doctor can be a steady home base, ordering tests, monitoring kidney function, managing medicines, and coordinating specialist referrals. Longer, easier-to-schedule visits can make regular monitoring simpler.
Common questions
Is Frasier syndrome the same as Denys-Drash syndrome?
No, but they are related. Both involve the WT1 gene and kidney disease, but the gene change affects a different spot. The kidney disease in Frasier syndrome usually gets worse more slowly. Doctors can tell them apart with genetic testing.
Can Frasier syndrome be prevented?
No, it cannot be prevented because it is caused by a gene change. Families who have had one child with the condition may want to talk with a genetic counselor, who is a trained expert who explains inherited conditions and testing options.
What is the long term outlook for people with Frasier syndrome?
Results differ from person to person. Many people with Frasier syndrome do develop serious kidney disease over time, which is why regular monitoring matters. Some people eventually need dialysis or a transplant, while others keep useful kidney function for longer.
Can girls have Frasier syndrome?
Yes. Girls with the condition usually have the same kidney problems, though they do not have the differences in sex development seen in boys. They may have a higher risk of certain tumors, so doctors watch them closely.
Sources
- NIH Genetic and Rare Diseases Information Center - Frasier syndrome
- MedlinePlus Genetics - Frasier syndrome
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.
