Ohdo syndrome, SBBYS Variant (SBBYSS)

What is Ohdo syndrome, SBBYS Variant (SBBYSS)?

This is a rare disease is a genetic condition that affects multiple parts of the body. Severe intellectual disability is a major syndrome.

To date, there are 19 recorded cases of the syndrome worldwide and it is thought to occur in more than 1 in 1 million live births worldwide.

What gene changes cause Ohdo syndrome, SBBYS Variant (SBBYSS)?

Changes in the KAT6 gene are responsible for the syndrome. The majority of diagnosed cases so far have been de novo mutations.

In some cases, a genetic syndrome may be the result of a de-novo mutation and the first case in a family. In this case, this is a new gene mutation which occurs during the reproductive process.

What are the main symptoms of Ohdo syndrome, SBBYS Variant (SBBYSS)?

A major symptom of the syndrome is severe intellectual disability, as well as limited to zero speech development.

Unique physical and facial characteristics of the syndrome include underdeveloped eyelids that cover part of the eye, a mask like, immobile face, a small mouth, small pointed teeth, thin upper lip, a large nasal tip, large toes and very long thumbs. A cleft palate occurs in 1/3 of all individuals with the syndrome.

Missing knee caps, or underdeveloped knee caps are also a major physical feature of the syndrome.

Other health conditions associated with the syndrome include heart defects, in 50% of individuals, feeding issues, low muscle gone and thyroid abnormalities.

How does someone get tested for Ohdo syndrome, SBBYS Variant (SBBYSS)?

The initial testing for Ohdo syndrome, SBBYS Variant (SBBYSS) can begin with facial analysis screening, through the FDNA Telehealth telegenetics platform, which can identify the key markers of the syndrome and outline the need for further testing. A consultation with a genetic counselor and then a geneticist will follow.

Based on this clinical consultation with a geneticist, the different options for genetic testing will be shared and consent will be sought for further testing.

Get Faster and More Accurate Genetic Diagnosis!

More than 250,000 patients successfully analyzed!
Don't wait years for a diagnosis. Act now and save valuable time.

Start Here!

"Our road to a rare disease diagnosis was a 5-year journey that I can only describe as trying to take a road trip with no map. We didn’t know our starting point. We didn’t know our destination. Now we have hope."


Paula and Bobby
Parents of Lillie

What is FDNA Telehealth?

FDNA Telehealth is a leading digital health company that provides faster access to accurate genetic analysis.

With a hospital technology recommended by leading geneticists, our unique platform connects patients with genetic experts to answer their most pressing questions and clarify any concerns they may have about their symptoms.

Benefits of FDNA Telehealth


Our platform is currently used by over 70% of geneticists and has been used to diagnose over 250,000 patients worldwide.


FDNA Telehealth provides facial analysis and screening in minutes, followed by fast access to genetic counselors and geneticists.

Ease of Use

Our seamless process begins with an initial online diagnosis by a genetic counselor and follows by consultations with geneticists and genetic testing.

Accuracy & Precision

Advanced artificial intelligence (AI) capabilities and technology with a 90% accuracy rate for a more accurate genetic analysis.

Value for

Faster access to genetic counselors, geneticists, genetic testing, and a diagnosis. As fast as within 24 hours if required. Save time and money.

Privacy & Security

We guarantee the utmost protection of all images and patient information. Your data is always safe, secure, and encrypted.

FDNA Telehealth can bring you closer to a diagnosis.
Schedule an online genetic counseling meeting within 72 hours!