Genetically enhanced children
Seven genetically enhanced children lived on the Darwin Genetic Research Station on Gagarin IV in 2365. One of them, David, was beamed aboard the shuttle Sakharov by the USS Enterprise-D for further medical investigations. The other six, all under twelve years old, remained on the station.
When Doctor Katherine Pulaski was infected by David, she beamed on board the station and witnessed the special abilities of the children, including telekinesis and telepathy. (TNG: "Unnatural Selection")
Five scientists were members of a Federation science team at the Darwin Genetic Research Station. They were involved in a research project that developed aggressive immune systems capable of destroying disease organisms.
However the antibodies were capable of attacking Humans and hyperaccelerating the aging process. They were infected, but cured by a transporter-based technique that was successful in curing them. (TNG: "Unnatural Selection")