Continuing to grieve their loss, Blair's family decided to donate her brain to an American research facility to understand ...

Many cases of Angelman syndrome can go undiagnosed because the disorder shares symptoms and characteristics with other conditions. Men and women are equally likely to experience the disorder.

We each get two copies of every gene - one copy from each of our parents. But what happens when one of these genes has been "turned off", or imprinted, and the remaining gene is defective?