Landmark gene editing creates a medicine made for just one patient
It is the first time the treatment has been personalised for one human's DNA.

CRISPR technology has shown strong results treating a baby with a life-threatening liver cell mutation, with scientists saying it is the first documented use of personalised gene-editing treatment.
US scientists say they have treated a boy named KJ Muldoon who had severe carbamoyl-phosphate synthetase 1 (CPS1) deficiency, diagnosed 48 hours after birth.