Fragile X disorders include two distinct conditions: fragile X syndrome (the most common single-gene cause of developmental delay and autism) and an entirely separate group of premutation syndromes.

"No one understands until they read that paper, and their life changes in an instant," Chelsae Jenner told Newsweek.

A woman with a rare genetic disorder called Apert syndrome turned an ordinary treadmill run into an extraordinary 26.2-mile feat. She documented it on TikTok and it went viral.

A new hearing has been scheduled for Robert Roberson, a Texas death row inmate convicted in 2003 of killing his 2-year-old daughter. The hearing is set for Wednesday, July 16, as the Texas Attorney ...