Medically reviewed by Nicholas R. Metrus, MD Key Takeaways Mosaic Down syndrome has some cells with three copies of chromosome 21, and some with two instead of all three.Only about 1% to 2% of people ...

Three copies of chromosome 21 causes Down syndrome (DS), and roughly half of children born each year in the United States with DS-approximately 2,600-also have congenital heart defects (CHDs). What is ...

A coordinated, multidisciplinary health care team to address the specific physical, psychological and developmental needs of children with Trisomy 21, or Down syndrome, and congenital heart disease ...

Jake Burger's first reaction to finding out his baby girl would be born with Down syndrome: "OK, and?" The baby, Penelope, had open heart surgery at Vanderbilt University Medical Center last month to ...

Miami Marlins' Jake Burger watches his RBI double before being caught trying to stretch it into a triple during seventh-inning baseball game action against the Toronto Blue Jays in Toronto, Friday, ...

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 Mie ...

Delivering a connection-building protein to star-shaped cells in the brain could reverse changes to neural circuits seen in ...

Jake Burger is the proud father of a newborn daughter whom he will honor on the field during every game. The new Rangers first baseman announced Friday that he will wear No. 21 to pay tribute to ...