Is Koolen De Vries Syndrome / 17q21.31 Microdeletion Syndrome contagious?

Koolen-de Vries syndrome (KdVS) is absolutely not contagious; it is a rare genetic condition caused by a chromosomal change and cannot be spread through touch, proximity, or any form of social interaction. There is no risk to caregivers, family members, or peers when spending time with individuals diagnosed with 17q21.31 microdeletion syndrome.

What is the actual cause of Koolen-de Vries syndrome?

Koolen-de Vries syndrome, also known as 17q21.31 microdeletion syndrome, is a genetic disorder caused by a deletion of a small segment of chromosome 17 or a mutation in the KANSL1 gene. Because it is rooted in the individual's unique genetic blueprint, it cannot be transmitted like a virus or bacteria. It is a lifelong condition present from conception, not an infectious disease acquired through environmental exposure.

Why might there be confusion regarding contagion?

Rare conditions like 17q21.31 microdeletion syndrome are often poorly understood by the general public, leading to unfounded fears. Sometimes, because children with Koolen-de Vries syndrome may experience developmental delays or unique facial features, people unfamiliar with genetics may mistakenly assume the condition is an illness that can be "caught." This is a misconception, as there are no environmental triggers or pathogens involved in the development of Koolen-de Vries syndrome.

Is it safe to interact with someone who has 17q21.31 microdeletion syndrome?

Yes, it is completely safe and encouraged to engage in normal social contact with those affected by Koolen-de Vries syndrome. There are no health risks associated with:

• Physical touch, hugging, or holding hands.


• Sharing food, toys, or common household items.


• Living in the same home or attending the same school as an individual with 17q21.31 microdeletion syndrome.


• Sharing air or participating in group activities.

Next steps

• Consult a clinical geneticist for a formal diagnosis or to understand the specific genetic mechanism of Koolen-de Vries syndrome.


• Join the DiseaseMaps.org community to connect with other families and share experiences with the 8 members currently registered.


• Educate your community and school staff using resources from the Koolen-de Vries Syndrome Foundation to reduce stigma.

Medical disclaimer: This information is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment from a qualified healthcare provider.

References

• NIH Genetic and Rare Diseases Information Center (GARD) - 17q21.31 microdeletion syndrome.


• Orphanet: Koolen-de Vries syndrome (ORPHA:168574).


• Online Mendelian Inheritance in Man (OMIM) - #610443 (Koolen-de Vries Syndrome).


• Koolen-de Vries Syndrome Foundation (kdvsfoundation.org).