Down syndrome, which causes a range of developmental differences and affects 1 in 700 newborns in the United States, is caused by the presence of an extra copy of chromosome 21. Mongkolchon ...

Scientists in Japan have used gene-editing technology to remove the extra chromosome responsible for Down syndrome, at least in lab-grown human cells. The project, led by Dr. Ryotaro Hashizume of ...

REISTERSTOWN, Md. — At just 17 years old, Ava Perlin is a published children's book author. Her first book, "One in a Millieon" is about her little sister, Millie.

Lisa Hill's son, Myles, was born with Down syndrome. Her wish was for her child to be able to play safely with other kids at the playground at Olen Park.