"This research is one of the first clinical trials to assess whether a drug can improve brain function in people with an inherited disorder.
"The potential benefits of this treatment include an improved quality of life for affected patients and wider benefits for their families and carers.
"If it works it will benefit patients directly and could provide clues as to whether this class of drugs (called mTOR inhibitors) might have wider benefits in problems like autism."
More top news
Samba Galêz, Wales' largest community Samba band are celebrating their 25th Anniversary by hosting a special weekend in Cardiff.
International students at Aberystwyth University have held a range of events to raise funds for the Nepal appeal.
A wet start for many with outbreaks of rain, heavy at times, moving northwards.