49,XXxxy syndrome

What is 49,XXxxy syndrome?

This rare disease is a chromosomal condition that affects only males.

It is sometimes referred to as a variant of Klinefelter syndrome, but it affects individuals much more severely and varies in many ways in terms of the possible symptoms.

The main features of this syndrome include intellectual disability, infertility, birth defects and unique facial features.

What gene changes cause 49,XXxxy syndrome?

The condition is caused by the presence of 3 extra x chromosomes in affected males. It is not inherited.

It is believed to be the result of mosaicism.

Mosaicism occurs when an individual has cells in their body with more or less chromosomes than the usual 46. This can trigger issues that affect different systems and parts of the body.

What are the main symptoms of 49,XXxxy syndrome?

Symptoms may vary considerably between individuals with the syndrome.

Some of the main symptoms include intellectual disability and developmental delay.
Delayed growth is common and may present as early as in the uterus.

Birth defects are also common and may affect the heart, brain, bones and kidneys.

Unique facial characteristics of the syndrome include a short stature, short neck, folder ears, a protruding lower jaw, a large and flat nose with a turned up tip, and wide-set eyes.

Infertility is also a main symptom of the syndrome.

How does someone get tested for 49,XXxxy syndrome?

The initial testing for 49,XXxxy syndrome 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."

Image

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

Credibility

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

Accessibility

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
Money

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!