Building a
brighter future.

IDefine is committed to identifying life-changing treatments & cures for those with Kleefstra syndrome (KS), a neurodevelopmental disorder caused by a loss of function in one copy of the gene EHMT1.

To learn more about IDefine’s current efforts, please read this update of our Foundation Highlights!

Our Blog

Natural History Study image
CSO Corner Volume 10: Establishing the Natural History of Kleefstra Syndrome
Hello fellow members of our KS family! I’d like to reach out today to talk about ways we in the community can work towards understanding the natural history...

Our Online Store

Support our cause

Our “ I Love Someone Rare” Campaign products are available for purchase now. All proceeds….

I Love Someone
Rare T-shirt

I Love Someone Rare
Water Bottle

I Love Someone
Rare Mug

We would love to hear from you.

If you have any questions feel free to contact us. We will be sure to get back to you as soon as possible.