Turner syndrome is a rare genetic condition that only affects females. It occurs when one of the two X chromosomes that should be present in a female’s body is missing or does not function properly.

I receive many emails from twins and their families with important stories to tell. In October 2025, I received a message from a fraternal female twin to say that she had a twin sister with Turner ...

Turner syndrome is a genetic condition in which a (female) person has only one X chromosome instead of two. Scientists have used a new computational method for precisely measuring sex chromosomes to ...

Liliana Castaneda, with Turner syndrome, was diagnosed with rare clear cell carcinoma of the vagina at 14, unrelated to her condition. Her treatment involved five chemotherapy rounds, external beam ...