"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
Largely fine and dry overnight with just a few showers at times. Temperatures will tumble away so frost is likely!
A team from the Brecon Beacons National Park is airlifting nearly a thousand tonnes of stone and heather for major landscape repairs.
Cardiff City owner Vincent Tan has given his full support to under-fire Manager Russell Slade