Doctors at a California hospital have administered the world 's first gene therapy which will alter Hunter syndrome sufferer of Madeux 's DNA from within . Traditional treatments involve cells being grown , genetically altered and then removed , but it does n't work with cells in the liver , heart or brain . But Dr Robin Lovell-Badge, from the Francis Crick Institute, said getting the treatment to work on more complex conditions would be a challenge. While it is too soon to determine whether the gene therapy , which will be triggered when it reaches Madeux 's liver , has worked , if it is successful , the patients will undergo the procedure .
Doctors at a California hospital have administered the world 's first gene therapy which will alter Hunter syndrome sufferer of Madeux 's DNA from within . Traditional treatments involve cells being grown , genetically altered and then removed , but it does n't work with cells in the liver , heart or brain . While it is too soon to determine whether the gene therapy , which will be triggered when it reaches Madeux 's liver , has worked , if it is successful , the patients will undergo the procedure .