Charlie Gard's parents say his life support will be withdrawn on Friday

Charlie Gard has a form of mitochondrial disease and his parents had hoped to take him to the US for experimental treatment.Charlie Gard, the critically ill baby at the centre of a protracted legal battle, is to have his life support withdrawn by a hospital on Friday, his parents have said.Chris Gard and Connie Yates said 10-month-old Charlie, who suffers from a form of mitochondrial disease – a genetic condition which causes progressive muscle weakness and brain damage – will die &l